No qualitative requirements.
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | chemical | reporting | unknown | Formaldehyde | drinking water | unknown | 6.2 µg/L | Analytical method detection limit using high-performance liquid chromatography following derivatization with 2,4-dinitrophenylhydrazine and liquid-solid extraction | low | |
| #P002 | chemical | reporting | guideline | Formaldehyde detection limit | drinking water | requirement | 6.2 µg/L | Analytical method using high-performance liquid chromatography following derivatization with 2,4-dinitrophenylhydrazine and liquid-solid extraction | high | |
| #P003 | chemical | operational | guideline | Formaldehyde analytical recovery | drinking water | requirement | > 90 % | Using liquid chromatography for formaldehyde recovery analysis | concentrations ranging from 20 to 200 µg/L | high |
| #P004 | operational | treatment | guideline | Ozonation dosage ratio | drinking water | OG | 0.5, 1.0 mg ozone/mg non-volatile organic carbon | Ozonation steps in a drinking water pilot plant testing formation and removal of formaldehyde | Applied to raw water with 1.2 µg/L mean concentration | high |
| #P005 | chemical | treatment | guideline | Formaldehyde concentration following ozonation | drinking water | treatment_goal | 2.2, 3.2 µg/L | Post-ozonation levels in Edmonton drinking water pilot plant | Following ozonation at 0.5 and 1.0 mg/mg dosage respectively | high |
| #P006 | chemical | treatment | guideline | Formaldehyde concentration following dual-media filtration | drinking water | treatment_goal | 0.5 - 0.9 µg/L | Treatment performance in pilot plant study | Subsequent dual-media filtration step after ozonation | high |
| #P007 | chemical | treatment | guideline | Formaldehyde concentration following GAC contactors | drinking water | treatment_goal | 0.3 - 0.6 µg/L | Treatment performance using granular activated carbon (GAC) contactors | Mean effluent levels following GAC contactors in pilot plant | high |
| #P008 | chemical | unknown | unknown | Raw water formaldehyde concentration | drinking water | unknown | 1.2 µg/L | Mean concentration in raw water at the Edmonton drinking water pilot plant used for ozonation testing. | Prior to ozonation at 0.5 and 1.0 mg/mg levels | high |
No definitions.