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Document ID ca-on-or1dws-2022-04-11-2 Title O. Reg. 170/03: DRINKING WATER SYSTEMS URL https://www.ontario.ca/laws/regulation/030170 Jurisdiction /ca/on Subdomain(s) none Language Status completed Analyzed at 2026-05-12 03:58:43.315042+00:00 Relevance inventory_targeted_fetch

Q Qualitative Requirements (65)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001operationalhealthmandatoryTransported Water Storage Container Maintenancedrinking waterIf a drinking water system to which an exemption set out in section 5 applies obtains water through transportation, the transported drinking water must be stored in a container that is constructed and maintained in a manner that prevents surface water and other foreign materials from coming into contact with the drinking water.Applies to systems obtaining transported water under section 5 exemptions.high
#Q002monitoringoperationalmandatoryWarning Notice Checkingdrinking waterThe owner of the drinking water system shall ensure that the warning notices are checked at least once a week to ensure that they are legible and comply with this section.Applies to systems exempted under section 8 where warning notices are required.high
#Q003administrativereportingmandatorySystem Information Noticedrinking waterThe owner of a drinking water system that commences operation after this section comes into force shall give the Director a written notice containing information about the system within 30 days after the system commences operation.Applies to systems commencing operation after the section comes into force.high
#Q004reportingreportingmandatoryAnnual Report Preparationdrinking waterThe owner of a drinking water system shall ensure that an annual report is prepared in accordance with this section.high
#Q005reportingreportingmandatoryInformation Availabilitydrinking waterThe owner of a drinking water system shall ensure that the following information is available for inspection in accordance with subsection (4): 1. A copy of every test result obtained in respect of a test required under this Regulation, or where continuous monitoring equipment is used under section 6-5 of Schedule 6, the daily minimum, maximum, and mean results obtained in respect of a test required under this Regulation, or under an approval, municipal drinking water licence or order, including an OWRA order. 2. A copy of every approval, drinking water works permit, municipal drinking water licence and order, including OWRA orders, that applies to the system and is still in effect, if the approval, permit, licence or order was issued after January 1, 2001. 3. A copy of every annual report prepared under section 11. 4. A copy of every report prepared under Schedule 21 or 22. 5. A copy of this Regulation.high
#Q006administrativereportingmandatoryRetention of Records - 2 Yearsdrinking waterThe owner of a drinking water system shall ensure that the following documents and other records are kept for at least two years: 1. Every record or report related to a test required under any of the following provisions: i. Section 7. ii. Schedules 6 to 12. iii. Sections 17-5 to 17-9 of Schedule 17. iv. Sections 18-5 to 18-9 of Schedule 18. 2. Every record or report related to a test required under an approval, municipal drinking water licence or order, including an OWRA approval or OWRA order, unless the record or report relates to a parameter listed in Schedule 23 or 24 to this Regulation or Schedule 3 to Ontario Regulation 169/03 (Ontario Drinking Water Quality Standards). 3. Every record made under subsection 8-2 (5) of Schedule 8 or subsection 9-2 (5) of Schedule 9. 4. Every record made under subsection 3-1.1 (6) or (7) of Schedule 3.high
#Q007designhealthmandatoryWell Construction and Maintenancedrinking waterThe owner of a drinking water system shall ensure the following: 1. Any well that serves as an entry point of raw water supply is constructed and maintained to prevent surface water and other foreign materials from entering the well.Applies to large municipal residential systems, small municipal residential systems, large municipal non-residential systems, small municipal non-residential systems, non-municipal year-round residential systems, non-municipal seasonal residential systems, large non-municipal non-residential systems, small non-municipal non-residential systems.high
#Q008treatmenttreatmentmandatoryTreatment Equipment Operationdrinking waterThe owner of a drinking water system and the operating authority for the system shall ensure the following: 1. The water treatment equipment is in operation whenever water is being supplied. 2. The water treatment equipment is operated in accordance with the Ministry’s Procedure for Disinfection of Drinking Water in Ontario. 3. The water treatment equipment required by section 1-3 or 1-4 is operated in a manner that achieves the design capabilities it is required to have under that section. 4. If the drinking water system’s water treatment equipment provides chlorination or chloramination for secondary disinfection, the equipment is operated so that, at all times and at all locations within the distribution system, i. the free chlorine residual is never less than 0.05 milligrams per litre, if the drinking water system provides chlorination and does not provide chloramination, or ii. the combined chlorine residual is never less than 0.25 milligrams per litre, if the drinking water system provides chloramination. 5. Adjustments to the water treatment equipment are carried out only by certified operators or emergency substitute operators.Applies to large and small municipal residential systems.high
#Q009monitoringoperationalmandatorySample Locationdrinking waterUnless otherwise specified, a person who is required to ensure that samples are taken under this Regulation, or under an approval, municipal drinking water licence or order, including an OWRA order, shall ensure that they are taken from the point at which water enters the drinking water systems’ distribution system or plumbing that is connected to the drinking water system.high
#Q010monitoringoperationalmandatorySample Handlingdrinking waterIf this Regulation or an approval, municipal drinking water licence or order, including an OWRA order, requires a water sample to be tested for a parameter by a laboratory, the owner of the drinking water system and the operating authority for the system shall ensure that, subject to the other provisions of this Regulation, the sample is taken and handled in accordance with the directions of the laboratory to which the sample will be delivered for testing, including directions with respect to, (a) collection procedures; (b) the use of specified kinds of containers or of containers that are provided by the laboratory; (c) the labelling of samples; (d) the completion and submission of forms that are provided by the laboratory; (e) methods of transporting samples, including temperature conditions that must be maintained during transportation; and (f) time periods for delivery of samples.high
#Q011reportingreportingmandatorySample Recordsdrinking waterThe owner of a drinking water system and the operating authority for the system shall ensure that, for every sample required by this Regulation or by an approval, municipal drinking water licence or order, including an OWRA order, a record is made of the following information: 1. The date and time the sample was taken, the location where the sample was taken and the name of the person who took the sample. 2. If the sample is taken under section 7 of this Regulation or Schedule 7, 8 or 9, the date and time the sample was tested, the name of the person who conducted the test, and the results of the test. 3. If the sample is taken from a drinking water system’s distribution system under section 15.1-4 or 15.1-5 of Schedule 15.1, the addresses of all premises served by the plumbing from which samples were taken on the same day in accordance with subsection 15.1-6 (3). 4. If the sample is taken under section 15.1-7 of Schedule 15.1 and tested for pH, i. the date and time of the test, ii. the name of the person who conducted it, and iii. the results of the test.Does not apply to a sample tested by continuous monitoring equipment or microbiological in-line testing equipment.high
#Q012operationaloperationalmandatoryTesting by Certified Operatorsdrinking waterThe owner of a drinking water system and the operating authority for the system shall ensure that every test required by this Schedule is conducted by a certified operator, emergency substitute operator or water quality analyst.Does not apply to tests conducted by continuous monitoring equipment.high
#Q013reportinghealthmandatoryLead - Warning Notice and Reportingdrinking waterIf the operating authority for a drinking water system or the owner of a drinking water system receives a report of a test result for a test conducted on any sample referred to in subsection (2.1), the operating authority or owner shall, within seven days after receiving the report, give the following to the occupant of the premises served by the tap from which the sample was taken and, if the sample was taken from a private residence within a multi-unit residential building, the owner of the building or their agent: 1. A copy of the report. 2. A statement of whether the report indicates a result that exceeds any Schedule 2 standard. 3. If the report indicates a result described in paragraph 2, any advice given by the medical officer of health to the operating authority or owner with respect to any steps that the occupant should take. 4. The telephone number of a person who is available to answer questions about the report.high
#Q014corrective_actionhealthmandatoryLead Corrective Actiondrinking waterIf a report is made under subsection 15.1-9 (2), the owner of the drinking water system and the operating authority for the system shall take such steps as are directed by the medical officer of health, including, if directed by the medical officer of health, providing information to occupants of the premises served by the plumbing from which the sample was taken that is in addition to the information provided under paragraph 3 of subsection 15.1-9 (1).high
#Q015reportinghealthmandatoryDuty to Report Other Observationsdrinking waterIf an observation other than an adverse test result prescribed by section 16-3 indicates that a drinking water system that provides or is required to provide disinfection is directing water to users of water from the system that has not been disinfected in accordance with the Ministry’s Procedure for Disinfection of Drinking Water in Ontario, (a) the owner of the system shall report to the Ministry and the medical officer of health immediately after the observation is made; or (b) if an operating authority is responsible for the operation of the system, the operating authority shall report to the Ministry, the medical officer of health and the owner of the system immediately after the observation is made.high
#Q016corrective_actionhealthmandatoryImproper Disinfection Corrective Actiondrinking waterIf a report is required to be made under section 16-4 of Schedule 16 in respect of water that has not been properly disinfected, the owner of the drinking water system and the operating authority for the system shall ensure that the following corrective action is taken: 1. Immediately restore the proper disinfection. 2. Take such other steps as are directed by the medical officer of health.Applies to large municipal residential systems.high
#Q017corrective_actionhealthmandatoryE. Coli Corrective Actiondrinking waterIf a report is required to be made under section 18 of the Act in respect of Escherichia coli (E. coli), the owner of the drinking water system and the operating authority for the system shall ensure that the following corrective action is taken: 1. Immediately resample and test. 2. Immediately increase the chlorine or chloramine dose and flush the watermains to ensure that, i. a free chlorine residual of at least 0.2 milligrams per litre is achieved at all points in the affected parts of the distribution system, if the drinking water system provides chlorination and does not provide chloramination, or ii. a combined chlorine residual of at least 1.0 milligrams per litre is achieved at all points in the affected parts of the distribution system, if the drinking water system provides chloramination. 3. Maintain the free chlorine residual or combined chlorine residual concentration referred to in paragraph 2 in the affected parts of the distribution system, and continue to resample and test, until Escherichia coli (E. coli) is not detected in any of the samples from two consecutive sets of samples taken 24 to 48 hours apart or as otherwise directed by the medical officer of health. 4. Take such other steps as are directed by the medical officer of health.Applies to large municipal residential systems.high
#Q018corrective_actionhealthmandatoryTotal Coliforms Corrective Actiondrinking waterIf a report is required to be made under section 18 of the Act in respect of total coliforms, the owner of the drinking water system and the operating authority for the system shall ensure that the following corrective action is taken: 1. Resample and test as soon as reasonably possible. 2. If total coliforms are detected under paragraph 1, immediately increase the chlorine or chloramine dose and flush the watermains to ensure that, i. a free chlorine residual of at least 0.2 milligrams per litre is achieved at all points in the affected parts of the distribution system, if the drinking water system provides chlorination and does not provide chloramination, or ii. a combined chlorine residual of at least 1.0 milligrams per litre is achieved at all points in the affected parts of the distribution system, if the drinking water system provides chloramination. 3. Maintain the free chlorine residual or combined chlorine residual concentration referred to in paragraph 2 in the affected parts of the distribution system, and continue to resample and test, until total coliforms are not detected in any of the samples from two consecutive sets of samples taken 24 to 48 hours apart or as otherwise directed by the medical officer of health. 4. Take such other steps as are directed by the medical officer of health.Applies to large municipal residential systems.high
#Q019reportinghealthmandatoryWarning Notice of Potential Problemsdrinking waterThe owner of a drinking water system and the operating authority for the system shall ensure that warning notices are posted in accordance with this section if, (a) the owner or operating authority is required under Schedule 18 to take all reasonable steps to notify all users of water from the system to use an alternate source of drinking water or, if no alternate source is available, to bring water to a rapid rolling boil for at least one minute before use; or (b) the owner or operating authority is not complying with Schedule 11, 12 or 18.Applies to small municipal residential systems, large/small municipal non-residential systems, and non-municipal systems.high
#Q020reportingreportingmandatoryEngineering Evaluation Reportsdrinking waterIf, after this Regulation comes into force, a drinking water system commences operation or an alteration is made to a drinking water system, the owner of the system shall ensure that, not later than 30 days after the system commences operation or the alteration is completed, a licensed engineering practitioner who has experience in sanitary engineering related to drinking water systems prepares a report that complies with section 21-5.Applies to specific non-residential and non-municipal drinking water systems.high
#Q021reportingreportingmandatorySummary Reports for Municipalitiesdrinking waterThe report must, (a) list the requirements of the Act, the regulations, the system’s approval, drinking water works permit, municipal drinking water licence, and any orders applicable to the system that were not met at any time during the period covered by the report; and (b) for each requirement referred to in clause (a) that was not met, specify the duration of the failure and the measures that were taken to correct the failure.high
#Q022operationaloperationalmandatoryOutdoors Card Carriage Requirementrecreational water, otherA person who is required to hold an outdoors card in order to obtain a licence to engage in sport fishing shall carry the outdoors card on his or her person at all times while sport fishing, regardless of whether the sport fishing licence is listed on the card.Applies to persons required to hold an outdoors card for sport fishing.high
#Q023administrativereportingmandatoryOutdoors Card Holder Information UpdateotherThe holder of an outdoors card shall notify the Minister of any change in name, address, contact information or residency no later than 10 days after the change occurs.Applies when name, address, contact info, or residency changes.high
#Q024operationaloperationalmandatoryLake Trout Tagging Requirementaquatic life, recreational waterA licence holder who catches and retains a lake trout from the waters referred to in subsection (1) shall attach the seal provided with the tag to the lower jaw of the lake trout immediately after catching it at the site where it was caught, and shall keep the seal attached to the lake trout while it is being transported and until it is consumed.Applies to catching/retaining lake trout in Echo Bay, Clearwater Bay, or Cul de Sac Lake (Lake of the Woods).high
#Q025reportinghealthmandatoryFish Disease Reportingaquatic lifeThe holder of an aquaculture licence shall immediately report to the Minister the discovery in fish of any of the disease organisms listed in Schedule C or of any other disease organism of which the Minister has notified the holder.Discovery of disease organisms in cultured fish.high
#Q026prohibitionoperationalmandatoryBait Possession and Receipt Requirementaquatic life, recreational waterNo person shall use bait for fishing or possess bait for use in fishing within a bait management zone unless... the bait originated from the holder of a commercial bait licence... and the person... is able to produce immediately on request by a conservation officer a legible receipt.When using or possessing bait in a Bait Management Zone (BMZ) not associated with primary residence.high
#Q027prohibitionoperationalmandatoryIce Fishing Hut Seasonal Removalrecreational waterA person shall not place, use, occupy or leave an ice fishing hut on the ice... after March 1 in any year, in fisheries management zones 17 and 20; after March 15... in FMZs 14, 16, 18 and 19; after March 31... in FMZs 9, 10, 11 and 15.Seasonal removal of ice huts based on Fisheries Management Zone.high
#Q028operationaloperationalmandatoryOutdoors Card Production Dutyrecreational waterOn request of a conservation officer, a person who holds an outdoors card shall produce it and show it to the officer.Upon request by a conservation officer.high
#Q029operationaloperationalmandatoryLicence Document Integrity Maintenancerecreational waterThe holder of a sport fishing licence shall ensure that the following documents remain intact and legible: 1. Every component of the licence, including any document that is deemed to be a sport fishing licence under this Part. 2. Every document that the holder of the sport fishing licence is required to carry on his or her person while fishing under this Regulation.Ongoing requirement for licence holders.high
#Q030monitoringoperationalmandatoryAquaculture Cage Water Quality Monitoringaquatic lifeIt is a condition of an aquaculture licence that authorizes aquaculture involving the use of a cage on public lands that the holder test and at all times maintain water quality as required in the licence and, where required, report on water quality to the Minister.Applies to aquaculture involving cages on public lands.high
#Q031prohibitionhealthmandatoryDiseased Fish Disposal Prohibitionaquatic lifeUnless the Minister directs otherwise, no holder of an aquaculture licence shall sell or otherwise dispose of fish taken from a location set out in the holder’s licence if the fish are infected with a disease organism listed in Schedule C or any other disease organism of which the Minister has notified the holder of the licence.Applies when fish are infected with organisms in Schedule C or as notified by the Minister.high
#Q032reportingreportingmandatoryCommercial Bait Record Keepingaquatic life, recreational waterThe holder of a commercial bait licence shall, (a) keep a log book, in the form required by the Minister, with information respecting the buying, selling, and taking of leeches, frogs or baitfish, including the quantities bought, sold or taken, and the relevant dates; and (b) make and submit an annual return in the form required by the Minister not later than one month after the expiry of the licence.Ongoing for commercial bait licence holders.high
#Q033reportingreportingmandatoryScientific Fish Collection Reportingaquatic lifeThe holder of a licence issued under this section shall complete a report in the form required by the Minister and submit it to the Minister by January 31Applies to holders of licences to collect fish for scientific purposes.high
#Q034prohibitionoperationalmandatoryOutdoors Card Multi-Possession Prohibitionrecreational waterA person shall not apply for or possess more than one outdoors card if they have different card numbers.high
#Q035administrativereportingmandatoryReturn of Cancelled Outdoors Cardrecreational waterA person who holds an outdoors card and whose licence is cancelled or suspended by a court order under section 104 or 105 of the Act shall immediately return the outdoors card to the Ministry if the Ministry requests it.Upon court order cancellation and Ministry request.high
#Q036operationaloperationalmandatoryLake St. Joseph Tag Carriage Requirementrecreational waterA licence holder who is issued a tag under this section shall carry the tag on his or her person while sport fishing.Applies to non-Canadian residents fishing in Lake St. Joseph.high
#Q037operationaloperationalmandatoryLeech Trap Specification and Markingaquatic life, recreational waterNo holder of a resident or Canadian resident sport fishing licence shall catch leeches for use as bait in fishing unless the holder does so by means of a single leech trap that, (a) does not exceed 45 centimetres in any dimension; and (b) is legibly marked with the holder’s name.When catching leeches for bait under a resident/Canadian resident sport fishing licence.high
#Q038operationaloperationalmandatoryAquaculture Escape Prevention and Reportingaquatic lifeIt is a condition of an aquaculture licence that the holder, (a) adhere to the measures for preventing the escape of fish described in the application for the licence, if any; (b) correct, as required by the Minister, any deficiencies in such measures that are identified by the Minister; (c) report to the Minister the number of fish that escape in excess of the number permitted in the licence; and (d) attempt to recapture escaped fish if the Minister has given approval in advance but otherwise obtain the direction of the Minister before attempting to recapture them.Standard conditions for aquaculture licence holders.high
#Q039treatmenttreatmentmandatoryAquaculture Wastewater Management and Disinfectionwastewater, aquatic lifeSubject to paragraph 2, all wastewater and effluent from the aquarium must be, i. discharged into a municipal wastewater treatment system, or ii. disinfected by a process that removes or inactivates pathogens such as viruses, bacteria and protozoa in water.Applies to research, zoo, or educational aquaculture exemptions.high
#Q040reportingreportingmandatoryStocked Fish Information Reportingaquatic lifeIt is a condition of a licence to stock fish that the holder submit to the Minister, on request, information on the fish stocked in accordance with the request.Upon request by the Minister.high
#Q041operationaloperationalmandatoryTransport Document Carriage Requirementaquatic lifeA person shall carry the document deemed to be a licence to transport live fish under subsection (1) while transporting the fish.While transporting live fish cultured, caught, or sold under relevant documents.high
#Q042reportingreportingmandatoryCommercial Fishing Daily Returnaquatic lifeThe holder of a commercial fishing licence shall, if requested by a fishery officer, prepare a daily return of the fish taken but not yet landed on each day, and submit the return to the officer or to a place designated by the officer.Upon request by a fishery officer.high
#Q043reportingreportingmandatoryCommercial Fishing Record of Saleaquatic lifeThe holder of a commercial fishing licence shall, (a) make a record of every sale of fish, except a sale to the owner or manager of a fish plant licensed under the Safe Food for Canadians Act (Canada) or under the Safe Food for Canadians Regulations (Canada), at the time of the sale; and (b) give a copy of the record to the buyer at the same time.At the time of sale, excluding specific licensed fish plants.high
#Q044administrativereportingmandatoryCommercial Bait Log Book Retentionaquatic lifeThe holder of a commercial bait licence shall retain the log book for five years after the expiry of the licence that was valid at the time it was kept.high
#Q045monitoringoperationalmandatoryScientific Collection Gear Monitoring and Markingaquatic lifeAll gear used to collect fish shall be monitored and inspected continuously while dewatering and, while not dewatering, be inspected at least once daily and clearly marked with the name and licence number of the licence holder any time it is left unattended while in the water.Applies to scientific collection licences during infrastructure/maintenance works.high
#Q046operationaloperationalmandatoryScientific Collection Gear Decontaminationaquatic lifeAll gear and equipment used for fish collection shall be decontaminated using the decontamination methods outlined for watercraft and watercraft equipment in the document entitled “Best Management Practices for Preventing the Spread of Aquatic Invasive Species – Guidance for Watercraft Users”, dated 2021, available on a website maintained by the Government of Ontario.high
#Q047operationaloperationalmandatoryIce Fishing Hut Identification Displayrecreational waterA person shall not place or occupy, for the purpose of fishing, an ice fishing hut on the ice of any of the waters described in section 38 unless one of the following numbers is displayed on the outside of the ice fishing hut in numerals at least two and one-half inches high: 1. For ice fishing huts on Lake Nipissing belonging to a tourist operator, the number assigned to the ice fishing hut on the licence issued to the tourist operator under subsection (2). 2. For all other ice fishing huts, the number assigned by the Minister to the owner of the ice fishing hut.Applies to ice huts in fisheries management zones described in section 38.high
#Q048administrativereportingmandatoryRetention of Records - 6 Yearsdrinking waterThe owner of a drinking water system shall ensure that the following documents and other records are kept for at least six years: 1. Every record or report related to a test required under any of the following provisions: i. Subsection 13-2 (2), subsection 13-4 (2) and sections 13-5, 13-6, 13-6.1 and 13-7 of Schedule 13. ii. Section 15-4 of Schedule 15. ii.1 Any provision in Schedule 15.1. ii.2 Section 15.2-2 of Schedule 15.2. iii. Sections 17-10 to 17-12 of Schedule 17. 2. Every record or report related to a test required under an approval, municipal drinking water licence or order, including an OWRA approval or OWRA order, if the record or report relates to a parameter listed in Schedule 23 or 24 to this Regulation or Schedule 3 to Ontario Regulation 169/03 (Ontario Drinking Water Quality Standards). 3. Every annual report prepared under section 11. 4. Every report prepared under Schedule 22.high
#Q049administrativereportingmandatoryRetention of Records - 15 Yearsdrinking waterThe owner of a drinking water system shall ensure that the following documents and other records are kept for at least 15 years: 1. Every record or report related to a test required under any of the following provisions: i. Subsections 13-2 (3) and 13-4 (3) and sections 13-8 and 13-9 of Schedule 13. ii. Sections 15-2, 15-5 and 15-6 of Schedule 15. iii. Section 17-13 of Schedule 17. iv. Sections 18-10 to 18-13 of Schedule 18. 2. Every report prepared under Schedule 21. 3. Every report referred to in paragraph 7 of subsection 2 (2) or clause 2 (3) (a) that is related to the system’s raw water supply. 4. If the owner gave the Director a written statement by a licensed engineering practitioner under subsection 21-2 (3) of Schedule 21, a copy of the OWRA approval referred to in that subsection.high
#Q050reportingreportingmandatoryPublic Information Inspection Accessdrinking waterThe information must be available for inspection by any member of the public during normal business hours without charge, (a) at the office of the owner or, if the office of the owner is not reasonably convenient to users of water from the system, at a location that is reasonably convenient to those users; and (b) if the owner is not a municipality but the system serves a municipality, at the office of the municipality.Refers to information list in Section 12(1).high
#Q051administrativereportingmandatoryProvision of Records to Provincial Officerdrinking waterIf the Director or a provincial officer makes a request for a document or other record referred to in subsection (1), (2) or (3), the owner of a drinking water system shall ensure that the document or other record is given to the Director or provincial officer within such period as the Director or provincial officer may specify.Upon request by the Director or a provincial officer.high
#Q052reportingreportingmandatoryUser Notification of Annual Report Availabilitydrinking waterEvery time that an annual report is prepared for a drinking water system, the owner of the system shall ensure that effective steps are taken to advise users of water from the system that copies of the report are available, without charge, and of how a copy may be obtained.high
#Q053monitoringoperationalmandatoryWeekly Sampling Interval Ruledrinking waterIf this Regulation or an approval, municipal drinking water licence or order, including an OWRA approval or OWRA order, requires at least one water sample to be taken every week and tested for a parameter, the owner of the drinking water system and the operating authority for the system shall ensure that at least one sample that is taken during a week for the purpose of being tested for that parameter is taken at least five days, and not more than 10 days, after a sample was taken for that purpose in the previous week.Applies when weekly sampling is required.high
#Q054administrativereportingmandatorySystem Information Change Notificationdrinking waterIf there is any change to the information given to the Director under subsection (1) or (2), the owner of the drinking water system shall give the Director written notice of the change within 10 days of the change.Applies when information previously submitted to the Director changes.high
#Q055operationaloperationalmandatoryWritten Operating Instructions Requirementdrinking waterWritten operating instructions for the water treatment equipment are kept near the equipment.Applies to municipal non-residential and non-municipal systems under Schedule 2.high
#Q056monitoringoperationalmandatoryContinuous Monitoring Result Examination Perioddrinking waterTest results recorded under paragraph 1 or 2 must be examined, within 72 hours after the tests are conductedApplies when continuous monitoring equipment is used for required sampling.high
#Q057operationaloperationalmandatoryOccupant Consent for Plumbing Samplingdrinking waterThe owner of a drinking water system and the operating authority for the system shall ensure that a sample taken from plumbing under section 15.1-4 or 15.1-5 is taken only with the consent of the occupant of the premises served by the plumbing.Applies to lead sampling conducted within private residences or buildings.high
#Q058administrativereportingmandatoryAnnual Report Distribution to Publicdrinking waterThe owner of a drinking water system shall ensure that a copy of an annual report for the system is given, without charge, to every person who requests a copy.Applies to annual reports that are not more than two years old.high
#Q059monitoringhealthmandatoryDaily Distribution Sampling for Transported Waterdrinking waterThe owner of the drinking water system referred to in subsection (1) that receives the drinking water and the operating authority for the system shall ensure that a distribution sample is taken at least once a day and is tested for, (a) free chlorine residual, if the system from which the drinking water is obtained provides chlorination and does not provide chloramination; or (b) combined chlorine residual, if the system from which the drinking water is obtained provides chloramination.Applies to systems receiving transported drinking water under section 7.high
#Q060administrativereportingmandatoryAnnual Report Distribution to Authoritiesdrinking waterThe owner of a drinking water system, other than a large municipal residential system or a small municipal residential system, shall ensure that, when the annual report is prepared, a copy of the report is given to, (a) each designated facility served by the system; and (b) the interested authority for each designated facility served by the system.Applies to systems other than large or small municipal residential systems.high
#Q061operationaloperationalmandatoryChemical Supply Maintenancedrinking waterClearly marked adequate supplies of chemicals or other materials necessary for the operation of the water treatment equipment are kept nearby, separate from other chemicals and materials that are not used for the drinking water system.Applies to systems regulated under Schedule 2.high
#Q062monitoringoperationalmandatoryPoint of Entry Unit Functioning Checkdrinking waterIf subsection (1) applies to a small municipal residential system, the owner of the system and the operating authority for the system shall ensure that, (a) each point of entry treatment unit is checked at least once every 12 months to confirm proper functioning; and (b) a record is made of the date and time of every check performed under clause (a), the name of the person who performed the check and the results of the check.Applies to small municipal residential systems using POE treatment.high
#Q063monitoringhealthmandatorySimultaneous Microbiological and Chlorine Testingdrinking waterIf this Regulation or an approval, municipal drinking water licence or order, including an OWRA order, requires a water sample to be taken and tested for a microbiological parameter, the owner of the drinking water system and the operating authority for the system shall ensure that another sample is taken at the same time from the same location and is tested immediately for, (a) free chlorine residual, if the system provides chlorination and does not provide chloramination; or (b) combined chlorine residual, if the system provides chloramination.Applies whenever microbiological testing is required.high
#Q064administrativereportingmandatoryLaboratory Identity Notificationdrinking waterIf a test of a water sample for a parameter is required by this Regulation, or by an approval, municipal drinking water licence or order, including an OWRA order, the owner of the drinking water system and the operating authority for the system shall ensure that written notice of the identity of the laboratory that will conduct the test is given to the Director before the sample is testedPrior to laboratory testing of required parameters.high
#Q065reportinghealthmandatoryImmediate Written Notice of Adverse Resultsdrinking waterA person who is required to report immediately in accordance with subsection 16-6 (2) shall, in addition to speaking in person or by telephone with a person referred to in subsection 16-6 (3), provide a written notice in accordance with this section and section 16-8 within 24 hours after the immediate report is given under section 16-4 or 16-5 or under subsection 18 (1) of the Act.Follow-up to immediate verbal reports of adverse test results or observations.high

P Quantitative Requirements (60)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001microbiologicaltreatmentmandatoryViruses removal or inactivation (ground water)drinking watertreatment_goal>= 99 %primary disinfection in accordance with the Ministry’s Procedure for Disinfection of Drinking Water in Ontario, including at least 99 per cent removal or inactivation of virusesground water raw water supplyhigh
#P002microbiologicaltreatmentmandatoryCryptosporidium oocysts removal or inactivationdrinking watertreatment_goal>= 99 %including at least 99 per cent removal or inactivation of Cryptosporidium oocystssurface water raw water supplyhigh
#P003microbiologicaltreatmentmandatoryGiardia cysts removal or inactivationdrinking watertreatment_goal>= 99.9 %at least 99.9 per cent removal or inactivation of Giardia cystssurface water raw water supplyhigh
#P004microbiologicaltreatmentmandatoryViruses removal or inactivation (surface water)drinking watertreatment_goal>= 99.99 %at least 99.99 per cent removal or inactivation of virusessurface water raw water supplyhigh
#P005chemicaltreatmentmandatoryFree chlorine residual (secondary disinfection)drinking waterOG0.2 mg/La free chlorine residual of 0.2 milligrams per litre, if the drinking water system provides chlorination and does not provide chloraminationat all locations within the distribution systemhigh
#P006chemicaltreatmentmandatoryCombined chlorine residual (secondary disinfection)drinking waterOG1.0 mg/La combined chlorine residual of 1.0 milligrams per litre, if the drinking water system provides chloraminationat all locations within the distribution systemhigh
#P007chemicaloperationalmandatoryFree chlorine residual (distribution sample minimum alarm)drinking waterOG0.05 mg/LFree chlorine residual in a distribution sample... Minimum Alarm Standard 0.05 milligrams per litrecontinuous monitoringhigh
#P008chemicaloperationalmandatoryCombined chlorine residual (distribution sample minimum alarm)drinking waterOG0.25 mg/LFree chlorine residual and total chlorine residual measured for the purpose of determining combined chlorine residual in a distribution sample... Minimum Alarm Standard 0.25 milligrams per litrecontinuous monitoringhigh
#P009physicaloperationalmandatoryTurbidity (maximum alarm standard)drinking waterOG1.0 NTUTurbidity... Maximum Alarm Standard 1.0 Nephelometric Turbidity Units (NTU)continuous monitoringhigh
#P010chemicaloperationalmandatoryTrihalomethanes (reduced sampling threshold)drinking waterrequirement> 0.050 mg/LNo single test result obtained in the previous 12 consecutive calendar quarters indicated that the concentration of trihalomethanes was greater than 0.050 milligrams per litre.for ceasing samplingmedium
#P011chemicaloperationalmandatoryHaloacetic acids (reduced sampling threshold)drinking waterrequirement> 0.040 mg/LNo single test result obtained in the previous 12 consecutive calendar quarters indicated that the concentration of haloacetic acids was greater than 0.040 milligrams per litre.for ceasing samplingmedium
#P012chemicalhealthmandatoryUnlisted pesticidedrinking waterMAC> 100 ng/LA result in a sample of drinking water indicating that the concentration of a pesticide not listed in Schedule 2 to the Ontario Drinking Water Quality Standards exceeds 100 nanograms per litre.adverse test result reportinghigh
#P013chemicalreportingmandatorySodium (reporting threshold)drinking waterrequirement> 20 mg/LA result indicating that the concentration of sodium exceeds 20 milligrams per litre in a sample of drinking wateradverse test result reportinghigh
#P014chemicalreportingmandatoryFluoride (reporting threshold)drinking waterMAC> 1.5 mg/LA result indicating that the concentration of fluoride exceeds 1.5 milligrams per litre in a sample of drinking wateradverse test result reportinghigh
#P015chemicalreportingmandatoryTrihalomethanes (reporting threshold)drinking waterMAC> 0.100 mg/LA result indicating that the running annual average of quarterly results with respect to samples tested for trihalomethanes... exceeds 0.100 milligrams per litre.adverse test result reportinghigh
#P016chemicalreportingmandatoryHaloacetic acids (reporting threshold)drinking waterMAC> 0.080 mg/LA result indicating that the running annual average of quarterly results with respect to samples tested for haloacetic acids... exceeds 0.080 milligrams per litre.adverse test result reportinghigh
#P017operationaloperationalmandatoryAdvanced exploration excavation thresholdotherrequirement> 1000 tonnesExcavation of material in excess of 1,000 tonnes.Exploration for the purposes of the definition of 'advanced exploration'high
#P018operationaloperationalmandatoryAdvanced exploration surface stripping area thresholdotherrequirement> 10000 square metressurface area over which the surface stripping is carried out is greater than 10,000 square metresOn mining lands, unless specific separation conditions in 2(2)5.i-iii are methigh
#P019operationaloperationalmandatoryAdvanced exploration surface stripping volume thresholdotherrequirement> 10000 cubic metresvolume of surface stripping is greater than 10,000 cubic metresOn mining lands, unless specific separation conditions in 2(2)5.i-iii are methigh
#P020operationalunknownmandatorySurface stripping area near waterotherrequirement> 2500 square metresarea over which the surface stripping is carried out is greater than 2,500 square metres... if the surface stripping is carried out within 100 metres of a body of waterWithin 100 metres of a body of waterhigh
#P021operationalunknownmandatorySurface stripping volume near waterotherrequirement> 2500 cubic metresvolume of the surface stripping is greater than 2,500 cubic metres, if the surface stripping is carried out within 100 metres of a body of waterWithin 100 metres of a body of waterhigh
#P022designunknownmandatoryBody of water proximity for surface strippingotherrequirement<= 100 metresif the surface stripping is carried out within 100 metres of a body of waterTriggers lower thresholds for surface stripping area and volumehigh
#P023operationaloperationalmandatorySite inspection frequency (inactivity)otherrequirement>= 1 every six monthsThe proponent shall inspect the site at least once every six months to ensure that all required protective measures are in place.For a project that is in a state of inactivityhigh
#P024unknownoperationalmandatoryQualified person relevant experience requirementotherrequirement>= 5 yearsholds a university degree in science or engineering and has... at least five years of relevant experienceIn respect of the subject matter of any certified statement to be providedhigh
#P025operationalreportingmandatoryPublic notice session lead timeotherrequirement>= 7 daysPublic notice shall be given at least seven days before holding the public information sessionBefore holding the public information sessionhigh
#P026operationaloperationalmandatoryPhased financial assurance submission lead timeotherrequirement>= 45 daysFinancial assurance for each subsequent phase of the project must be received by the Ministry at least 45 days before the start of any activity in the phase.For subsequent phases of a projecthigh
#P027designoperationalmandatorySeparation distance for surface strippingotherrequirement>= 500 metresThe edges of each area where surface stripping is carried out are separated by a minimum of 500 metres.Exception to advanced exploration definition for separate areashigh
#P028designreportingmandatoryPublic notice map dimensionotherrequirement>= 7 centimetresThe map must be a minimum of seven centimetres per sideMap included in public noticehigh
#P029designreportingmandatoryPublic notice map radius minimumotherrequirement>= 3 kilometre radiusshow a minimum of a three kilometre radiusMap included in public noticehigh
#P030designreportingmandatoryPublic notice map radius maximumotherrequirement<= 5 kilometre radiusand a maximum of a five kilometre radius around the siteMap included in public noticehigh
#P031operationalreportingmandatoryPublic information session comment submissionotherrequirement<= 15 daysprovide to the Minister the names... and any written comments... no later than 15 days after the sessionFollowing a public information sessionhigh
#P032operationaloperationalmandatoryOwned material share for processing facilitiesotherrequirement>= 2/3 proportionat least two thirds of mined material supplied to the processing facility... came from the proponent’s proportioned share from mines in which it has an ownership interestUsed to calculate life of mine for processing facilitieshigh
#P033operationaloperationalmandatoryOntario source share for processing facilitiesotherrequirement>= 1/3 proportionat least one third of mined material supplied to the processing facility... came from the proponent’s proportioned share of mined material from Ontario minesUsed to calculate life of mine for processing facilitieshigh
#P034operationaloperationalmandatoryCorporate financial test rating countotherrequirement>= 2 ratingscredit rating meets or exceeds two of the following credit ratingsFor entire life of mine or first half of life of mine testshigh
#P035operationaloperationalmandatoryTemporary suspension financial assurance percentageotherrequirement25 %provide 25 per cent of the financial assurance that the proponent would have been required to provide if the proponent had not complied with the testUpon placing a project into temporary suspensionhigh
#P036operationaloperationalmandatoryCrown intervention notice periodotherrequirement>= 15 daysbe given at least 15 days before the Crown or an agent of the Crown enters the lands to rehabilitate the mine hazardPrior to Crown intervention under subsection 147(2) of the Acthigh
#P037operationalreportingmandatoryDispute resolution report deadlineotherrequirement<= 30 daysThe designated individual or body shall provide a report setting out recommendations to the Minister within 30 days after having received the referralUpon referral of a dispute relating to Aboriginal consultationhigh
#P038operationalreportingmandatoryNotice of project delay triggerotherrequirement> 1 yearA proponent shall submit to the Minister a further Notice of Project Status if advanced exploration or mine production begins more than one year after the date specifiedIf project start exceeds original schedulehigh
#P039operationaloperationalmandatorySenior debt instrument termotherrequirement>= 5 yearsdebt rating on a proponent’s most senior debt instrument having a term of at least five yearsUsed for corporate financial test in absence of corporate credit ratinghigh
#P040operationalreportingmandatoryCredit rating downgrade notice windowotherrequirement<= 7 daysinform the Minister in writing within seven days if any rating service ... downgrades the proponent’s credit ratingApplies to proponents complying with corporate financial testshigh
#P041operationalreportingmandatoryMaterial status change notice windowotherrequirement<= 30 daysinform the Minister in writing within 30 days if any matter ... arises that may materially affect the proponent’s statusStatus in relation to financial assurance or life of minehigh
#P042operationaloperationalmandatoryCorporate financial test mine life minimumotherrequirement>= 4 yearscomplies with the corporate financial test for the first half of the life of the mine if the first half of the life of a mine is at least four yearsCondition for compliance for first half of life of minehigh
#P043operationalreportingmandatoryAnnual production statement deadlineotherrequirement<= 60 dayswithin 60 days after the end of a fiscal year, provide the Minister with a statement of the amount of ore producedProponents complying with corporate financial test for first half of mine lifehigh
#P044operationaloperationalmandatoryFinancial assurance return windowotherrequirement<= 30 daysthe Minister shall, no later than 30 days after approving the change, return any previously-provided financial assuranceAfter approving change to corporate financial test compliancehigh
#P045operationaloperationalguidanceTransition period for noticesotherrequirement<= 3 monthsNotice of Material Change for the amendment was submitted before the transition date or within three months after itTransition rules for exemption from qualified person certificateshigh
#P046operationaloperationalguidanceTransition period for plan submissionotherrequirement<= 2 yearsthe amendment is submitted no later than the second anniversary of the transition dateTransition rules for exemption from qualified person certificateshigh
#P047operationaloperationalmandatoryFinancial assurance provision after test failure or downgradeotherrequirement<= 30 daysthe proponent shall, within 30 days, provide the Minister with financial assurance in the form and in the amount identified in accordance with clause (2) (c)If the proponent no longer complies with the corporate financial test due to a downgrade or failurehigh
#P048operationaloperationalmandatoryInitial suspension financial assurance installmentotherrequirement<= 30 daysprovide 25 per cent of the financial assurance ... within 30 days of the submission of the Notice of Project Status indicating that the project has been placed in temporary suspensionUpon placing a project into temporary suspensionhigh
#P049designoperationalmandatoryStorm water management works exemption lot limitotherrequirement1 lotis designed to service one lot or parcel of landDischarges into a non-combined storm sewer and is not located on or servicing industrial landhigh
#P050designoperationalmandatoryLow impact development works exemption lot limitotherrequirement1 lotlow impact development works that is located wholly within the boundaries of a lot or parcel of landUsed primarily for residential purposes with only single-unit or multi-unit residential buildingshigh
#P051designoperationalmandatoryLarge municipal system capacity thresholddrinking waterrequirement> 2.9 litres per secondcapable of supplying drinking water at a rate of more than 2.9 litres per secondDefinition of large municipal non-residential systemhigh
#P052designhealthmandatoryWatertight casing depthdrinking waterrequirement< 6 metreswell that does not have a watertight casing that extends to a depth of six metres below ground levelDeemed ground water under direct influence of surface waterhigh
#P053designhealthmandatorySmall system proximity to surface waterdrinking waterrequirement<= 15 metresnot capable of supplying water at a rate greater than 0.58 litres per second and that obtains water from a well, any part of which is within 15 metres of surface waterDeemed ground water under direct influence of surface waterhigh
#P054designhealthmandatoryLarge overburden well proximity to surface waterdrinking waterrequirement<= 100 metrescapable of supplying water at a rate greater than 0.58 litres per second and that obtains water from an overburden well, any part of which is within 100 metres of surface waterDeemed ground water under direct influence of surface waterhigh
#P055designhealthmandatoryLarge bedrock well proximity to surface waterdrinking waterrequirement<= 500 metrescapable of supplying water at a rate greater than 0.58 litres per second and that obtains water from a bedrock well, any part of which is within 500 metres of surface waterDeemed ground water under direct influence of surface waterhigh
#P056designoperationalmandatoryTurbidity calibration margin of errordrinking waterOG0.1 NTUchecked and calibrated as often as necessary to ensure that test results are within the following margins of error... 0.1 Nephelometric Turbidity Units (NTU), in the case of turbidity.Continuous monitoring equipment calibrationhigh
#P057designoperationalmandatoryFree chlorine calibration margin of errordrinking waterOG0.05 mg/Lmargins of error... In the case of free chlorine residual, 0.05 milligrams per litre, if the concentrations usually measured by the equipment are less than or equal to 1.0 milligrams per litreContinuous monitoring equipment calibrationhigh
#P058chemicalhealthmandatoryLead plumbing definitiondrinking waterrequirement> 8 %plumbing and service pipes with a lead content greater than 8 per centDefinition for Schedule 15.1high
#P059chemicalhealthmandatoryLead solder definitiondrinking waterrequirement> 0.2 %solder with a lead content greater than 0.2 per centDefinition for Schedule 15.1high
#P060designhealthmandatoryWell casing height (floor pump)drinking waterrequirement>= 15 cmcased to... at least 15 centimetres above the floor, if a pump is installed directly over the well and a floor has been constructedWell technician's notice requirementshigh

D Definitions (31)

Req ID Category Name Context Confidence
#D001advisory boardmeans an advisory board appointed by an authorityhigh
#D002Agencymeans the corporation established under section 35.1high
#D003authoritymeans a conservation authority established or continued under this Act or a predecessor of this Acthigh
#D004executive committeemeans the executive committee appointed by an authorityhigh
#D005landincludes buildings and any estate, term, easement, right or interest in, to, over or affecting landhigh
#D006Ministermeans the Minister of the Environment, Conservation and Parks or such other member of the Executive Council to whom responsibility for the administration of this Act may be assigned or transferred under the Executive Council Acthigh
#D007municipalitymeans a local municipality, and includes a band under the Indian Act (Canada) that is permitted to control, manage and expend its revenue money under section 69 of that Acthigh
#D008operating expensesinclude, (a) salaries, per diems and travel expenses of employees and members of an authority, (b) rent and other office costs, (c) program expenses, (d) costs that are related to the operation or maintenance of a project, but not including the project’s capital costs, and (e) such other costs as may be prescribed by regulationhigh
#D009participating municipalitymeans a municipality that is designated by or under this Act as a participating municipalityhigh
#D010projectmeans a work undertaken by an authority for the furtherance of its objectshigh
#D011watershedmeans an area drained by a river and its tributarieshigh
#D012new authoritymeans an authority set out in Column 2 of the Table to section 1.3high
#D013predecessor authoritymeans an authority set out in Column 1 of the Table to section 1.3high
#D014transition committeemeans, in respect of a new authority, the committee established under subsection 1.6 (1) for that authorityhigh
#D015transition datemeans February 1, 2027 or such later date as may be prescribed by the regulationshigh
#D016municipalitymeans a lower-tier municipality, an upper-tier municipality or a single-tier municipalityhigh
#D017municipalityincludes an upper-tier municipalityhigh
#D018specified municipalitymeans, when used in reference to an authority, (a) a municipality that is designated under the regulations made under the Clean Water Act, 2006 as a participating municipality for the authority for the purposes of that Act but that is not one of the authority’s participating municipalities under this Act, or (b) a municipality that is designated under the regulations made under the Lake Simcoe Protection Act, 2008 as a participating municipality for the Lake Simcoe Region Conservation Authority for the purposes of that Act but that is not one of the authority’s participating municipalities under this Acthigh
#D019development activitymeans a development activity as defined by regulationhigh
#D020hazardous landmeans hazardous land as defined by regulationhigh
#D021watercoursemeans a watercourse as defined by regulationhigh
#D022wetlandmeans a wetland as defined by regulationhigh
#D023development projectmeans development activity as defined in subsection 28 (5) or any other act or activity that, without a permit issued under this section or section 28.1, would be prohibited under section 28high
#D024notice periodmeans the 45-day period following the day on which a copy of a proposed direction is provided under subsection (4) or such other period as may be prescribed by the regulationshigh
#D025predecessor authority’s new authoritya reference to the new authority into which the predecessor authority is to be amalgamatedhigh
#D026new authority’s predecessor authoritiesa reference to the predecessor authorities that are to be amalgamated into the new authorityhigh
#D027predecessor employersthe predecessor authoritieshigh
#D028successor employerstheir new authoritieshigh
#D029changeover datethe transition datehigh
#D030fiscal yearbegins on April 1 in each year and ends on March 31 in the following yearhigh
#D031new authorityincludes, where the context so requires, the authority as it is being planned for before the amalgamation and continuation provided for under subsection 1.3 (2) occurhigh