Parameter Viewer

Document ID ca-alrv-2026-03-11-2 Title Aquatic Life Reference Values (ALRVs) URL https://www.canada.ca/en/health-canada/services/consumer-product-safety/pesticides-pest-management/public/protecting-your-health-environment/programs-initiatives/water-monitoring-pesticides/aquatic-life-reference-values.html/1000?wbdisable=true Jurisdiction /ca Subdomain(s) none Language Status completed Analyzed at 2026-05-13 15:24:12.231085+00:00 Relevance inventory_targeted_fetch

4 Qualitative 13 Quantitative 37 Definitions

Q Qualitative Requirements (4)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Context	Conditions	Confidence
#Q001	operational	operational	mandatory	Use of Alternate Aquatic Life Benchmarks	aquatic life	If PMRA does not have an ALRV, the USEPA ALB is used.	If PMRA does not have an ALRV	high
#Q002	corrective_action	operational	guidance	PMRA Actions on ALRV Exceedance	aquatic life	Additional actions that PMRA may take when ALRVs are exceeded could include: examining information about the use of the pesticide and the current risk management measures in place; collecting additional site-specific data to further identify the risk; conducting a re-evaluation or special review that could result in new risk mitigation measures	When ALRVs are exceeded	high
#Q003	operational	treatment	mandatory	Compliance with National Effluent Quality Standards	wastewater	They also set achievable national effluent quality standards for owners and operators of wastewater systems that collect and discharge up to 100 cubic metres or more of effluent per day.	wastewater systems that collect and discharge up to 100 cubic metres or more of effluent per day	high
#Q004	prohibition	unknown	mandatory	Prohibition of deposit of deleterious substances	aquatic life	The Fisheries Act prohibits the deposit of deleterious substances in water bodies containing fish or in any place where the deleterious substances may enter any such water, unless authorized by a federal regulation.	unless authorized by a federal regulation	high

P Quantitative Requirements (13)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Limit Type	Limit Value	Context	Conditions	Confidence
#P001	chemical	health	guidance	1-bromo-3-chloro-5,5-dimethylhydantoin and related hydantoins - Acute Fish ALRV	aquatic life	unknown	200 µg/L	Aquatic Life Reference Value		high
#P002	chemical	health	guidance	1-bromo-3-chloro-5,5-dimethylhydantoin and related hydantoins - Acute invertebrate ALRV	aquatic life	unknown	235 µg/L	Aquatic Life Reference Value		high
#P003	chemical	health	guidance	2,4-D - Acute Fish ALRV	aquatic life	unknown	47 µg/L	Aquatic Life Reference Value		high
#P004	chemical	health	guidance	2,4-D - Chronic Fish ALRV	aquatic life	unknown	120 µg/L	Aquatic Life Reference Value		high
#P005	chemical	health	guidance	2,4-D - Acute invertebrate ALRV	aquatic life	unknown	> 100 µg/L	Aquatic Life Reference Value		high
#P006	chemical	health	guidance	2,4-D - Chronic invertebrate ALRV	aquatic life	unknown	15 µg/L	Aquatic Life Reference Value		high
#P007	chemical	health	guidance	2,4-D - Non-vascular plants ALRV	aquatic life	unknown	94 µg/L	Aquatic Life Reference Value		high
#P008	chemical	health	guidance	2,4-D - Vascular plants ALRV	aquatic life	unknown	70 µg/L	Aquatic Life Reference Value		high
#P009	chemical	health	guidance	2,4-DB - Acute Fish ALRV	aquatic life	unknown	3240 µg/L	Aquatic Life Reference Value		high
#P010	chemical	health	guidance	2,4-DB - Chronic Fish ALRV	aquatic life	unknown	1660 µg/L	Aquatic Life Reference Value		high
#P011	chemical	health	guidance	2-methyl-4-isothiazolin-3-one - Acute Fish ALRV	aquatic life	unknown	35 µg/L	Aquatic Life Reference Value		high
#P012	chemical	health	guidance	4,5-dichloro-2-N-octyl-3(2H)-isothiazolone - Acute Fish ALRV	aquatic life	unknown	0.7 µg/L	Aquatic Life Reference Value		high
#P013	operational	operational	mandatory	Minimum wastewater system discharge capacity	wastewater	requirement	>= 100 m3/day	Owners and operators of wastewater systems that collect and discharge effluent.	Applies to systems collecting and discharging this volume or more per day.	high

D Definitions (37)

Req ID	Name	Context	Confidence
#D001	ECCC	Environment and Climate Change Canada	high
#D002	AOSR	Athabasca Oil Sands Region	high
#D003	Oil sands tailings	Oil sands tailings are a mixture of sand, silt, clay, residual bitumen, and contaminated process-affected water.	medium
#D004	PAHs	Polycyclic aromatic hydrocarbons	high
#D005	UNDRIP	United Nations Declaration on the Rights of Indigenous Peoples	high
#D006	CIWG	Crown-Indigenous Working Group	high
#D007	ALRVs	pesticide concentrations in surface water below which risks to aquatic life are not expected.	high
#D008	Short-term (acute) ALRVs	These are indicative of the possible impacts to the aquatic environment that can come from short-term exposure to high concentrations of a pesticide.	high
#D009	Long-term (chronic) ALRVs	These are indicative of the possible impacts to the aquatic environment that can come from long-term exposure to pesticide concentrations.	high
#D010	LC50	50 percent lethal concentration	high
#D011	LD50	50 percent lethal dose	high
#D012	EC50	50 percent effect concentration	high
#D013	IC50	50 percent inhibition concentration	high
#D014	NOAEC	no observed adverse effects concentration	high
#D015	NOEL	no observed effect level	high
#D016	NOEC	no observed effect concentration	high
#D017	HC5	5 percent hazard concentration	high
#D018	UF	uncertainty factor	high
#D019	µg/L	microgram per liter	high
#D020	PMRA	Health Canada's Pest Management Regulatory Agency	high
#D021	USEPA	United States Environmental Protection Agency	high
#D022	USEPA ALBs	USEPA Aquatic Life Benchmarks	high
#D023	ALRV Year Updated	refers to the year of publication of the final decision for the assessment upon which the latest ALRV was based.	high
#D024	ALRV Reference	refers to the published document that contains the toxicity values used to derive the ALRV. Where the ALRV reference indicates "EPA Benchmark", no ALRV was available and the EPA Aquatic Life Benchmark was used.	high
#D025	Representative CAS number	is a single CAS number associated with the active that has been selected to represent the active for the purposes of data analysis (for example, comparison against water monitoring data available on the Open Government Portal).	high
#D026	Registered CAS number(s)	includes CAS numbers of chemical forms associated with the active as it is currently registered; may include multiple CAS numbers.	high
#D027	Acute Fish ALRV	= Toxicity value x UF. UF = 0.1 for LC50 and EC50 values; no UF is applied to NOEC and HC5 values. The selected toxicity value is usually the lowest acute endpoint in a standardized test; examples of test species are Rainbow Trout (Oncorhynchus mykiss), Fathead Minnow (Pimephales promelas), and Bluegill Sunfish (Lepomis macrochirus). NOECs for acute fish endpoints are based on old methods and are updated as actives go through assessments using new methodology.	high
#D028	Chronic Fish ALRV	= Toxicity value. UFs are not applied to chronic toxicity values. The selected toxicity value is usually the lowest NOEC or NOEL from a life-cycle or early life stage test; examples of test species are Rainbow Trout (Oncorhynchus mykiss), Fathead Minnow (Pimephales promelas), and Bluegill Sunfish (Lepomis macrochirus).	high
#D029	Acute Invertebrate ALRV	= Toxicity value x UF. UF = 0.5 for LC50 and EC50 values; no UF is applied to HC5 values. The selected toxicity value is usually the lowest acute endpoint in a standardized test; test species are generally Chironomus or Daphnia species.	high
#D030	Chronic Invertebrate ALRV	= Toxicity value. UFs are not applied to chronic toxicity values. The selected toxicity value is usually the lowest EC50, NOEC or NOEL from a life-cycle test; test species are generally Chironomus or Daphnia species.	high
#D031	Non-vascular Plant ALRV	= Toxicity value x UF. UF = 0.5 for LC50, EC50 and IC50 values; no UF is applied to NOEC and HC5 values. The selected toxicity value is generally the lowest endpoint in a standardized algae toxicity test.	high
#D032	Vascular Plant ALRV	= Toxicity value x UF. UF = 0.5 for EC50 and IC50 values; no UF is applied to NOEC and HC5 values. The selected toxicity value is generally the lowest endpoint in a standardized plant toxicity test; the test species is usually Lemna gibba.	high
#D033	n/a	indicates that acceptable aquatic toxicity values are not available.	high
#D034	>	derived from a "greater-than" value and may overestimate toxicity.	high
#D035	<	derived from a "less-than" value and may underestimate toxicity.	high
#D036	algae	aquatic non-vascular plants	high
#D037	decision documents	regulatory decision documents published by PMRA for every pesticide evaluation or re-evaluation	high