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Document ID ca-bc-bsdwqggs-2020 Title B.C. Source Drinking Water Quality Guidelines: Guideline Summary URL https://www2.gov.bc.ca/assets/gov/environment/air-land-water/water/waterquality/water-quality-guidelines/approved-wqgs/drinking-water-and-recreation/source_drinking_water_quality_guidelines_bcenv.pdf Jurisdiction /ca/bc Subdomain(s) Drinking water, Water quality standards, Source water protection Language en Status completed Analyzed at 2026-03-15 05:38:43.999022+00:00 Relevance Provides numeric guidelines for source drinking water quality in BC.

21 Qualitative 104 Quantitative 60 Definitions

Q Qualitative Requirements (21)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Context	Conditions	Confidence
#Q001	administrative	operational	mandatory	Consideration of SDWQGs in ENV Decisions	drinking water, other	Once approved, SDWQGs constitute ENV policy and must be considered in any decisions affecting water quality made within ENV.	Applies to decisions affecting water quality made within the B.C. Ministry of Environment and Climate Change Strategy (ENV).	high
#Q002	administrative	operational	guidance	Use of SDWQGs in Waste Management Permits	drinking water, wastewater	The SDWQGs are not directly enforceable but may be used to support the development of waste management permits, approvals, plans or operating certificates.		high
#Q003	administrative	operational	mandatory	Non-Supersedence of Drinking Water Protection Act	drinking water	The SDWQGs do not supersede or invalidate any requirement related to drinking water quality established under the Drinking Water Protection Act.		high
#Q004	operational	health	recommended	Prevention of Arsenic Increases	drinking water	Therefore, source water protection efforts should prevent increases in As above natural background levels.		high
#Q005	operational	health	recommended	Minimization of Boron Increases	drinking water	Boron concentrations in B.C. may be less than 5.0 mg/L, so increases to background concentrations should be minimized to decrease risks to human health.		high
#Q006	operational	health	recommended	Minimization of Lead Exposure	drinking water	Health Canada set the MAC at 0.005 mg/L but recommends lead levels should be kept as low as reasonably achievable as the MAC considers treatment and analytical technology limitations. As Pb is classified as a probable carcinogen to humans and there is no known safe exposure level to lead, exposure should be kept as low as possible.		high
#Q007	monitoring	health	guidance	Use of Quantitative Microbial Risk Assessment	drinking water	To protect drinking water sources against pathogens, quantitative microbial risk assessment can be used by drinking water suppliers to quantify the health risks from potential microorganisms (Health Canada 2019h).		high
#Q008	operational	treatment	recommended	Minimization of Total Organic Carbon (TOC)	drinking water	Every effort should be made to keep TOC in drinking water sources as low as reasonably achievable.		high
#Q009	monitoring	health	recommended	PFOA Source Water Examination	drinking water	Health Canada (2018c) recommends that drinking water suppliers examine source waters to assess PFOA and perfluorooctane sulfonate (PFOS) concentrations (see S. 1.40), especially near firefighting training areas, waste disposal sites, military bases, airports, and/or manufacturing areas.	Especially near firefighting training areas, waste disposal sites, military bases, airports, and/or manufacturing areas.	high
#Q010	monitoring	health	recommended	PFOS Source Water Examination	drinking water	Health Canada (2018d) recommends that drinking water suppliers examine source waters to assess PFOA (see S. 1.38) and PFOS concentrations, especially near firefighting training areas, waste disposal sites, military bases, airports, and/or manufacturing areas.	Especially near firefighting training areas, waste disposal sites, military bases, airports, and/or manufacturing areas.	high
#Q011	monitoring	operational	mandatory	Total Phosphorus Monitoring (Lake Residence > 6 Months)	drinking water	For lakes with residence time > 6 months, measure total P during spring overturn.	Lakes with residence time > 6 months	high
#Q012	monitoring	operational	mandatory	Total Phosphorus Monitoring (Lake Residence < 6 Months)	drinking water	For lakes with residence time < 6 months, measure mean epilimnetic total P during the growing season (ENV 1985).	Lakes with residence time < 6 months	high
#Q013	operational	health	recommended	Minimization of Uranium Increases	drinking water	Increases to background concentrations should be minimized to decrease risks to human health.		high
#Q014	operational	health	recommended	Minimization of Vinyl Chloride Levels	drinking water	Vinyl chloride is a synthetic chemical which is classified as a human carcinogen, therefore Health Canada recommends levels should be kept as low as reasonably achievable below the guideline.		high
#Q015	administrative	operational	mandatory	Supersedence of Previous SDWQGs	drinking water	The SDWQGs provided in this document are current and replace any SDWQGs contained in individual B.C. WQG overview and technical documents.		high
#Q016	administrative	operational	mandatory	Collaborative Development of BC-Specific Guidelines	drinking water	ENV will work collaboratively with HLTH and any other pertinent groups to develop or adopt an appropriate WQG.	In situations where a Health Canada Guideline for Canadian Drinking Water Quality is not available or not appropriate for source water, or where circumstances dictate that a B.C.specific WQG is required	high
#Q017	administrative	operational	guidance	Use of SDWQGs in Assessments and Decisions	drinking water	More specifically, SDWQGs may be used to inform resource management decisions within ENV, support human health risk assessments, environmental assessments, and source water assessments.		high
#Q018	administrative	operational	guidance	Use of SDWQGs in Source-to-Tap Tools	drinking water	The SDWQGs may be used as a benchmark in a drinking water source-to-tap screening tool or a comprehensive drinking water source-to-tap assessment guideline; tools used by water suppliers to characterize raw drinking water sources.	Used by water suppliers to characterize raw drinking water sources	high
#Q019	operational	health	recommended	Molybdenum Background Minimization	drinking water	Increases to background concentrations should be minimized to decrease risks to human health.	Specific to Molybdenum levels in B.C. source waters	high
#Q020	operational	health	recommended	PFOA and PFOS Additive Calculation	drinking water	When PFOS and PFOA occur together in drinking water sources, the ratio of the observed concentration to the MAC should be calculated for both chemicals. These ratios should be summed, and the total should not exceed 1.	When PFOS and PFOA occur together in drinking water sources	high
#Q021	operational	health	mandatory	Carcinogenic PAH TPE Calculation Procedure	drinking water	TPE is calculated by multiplying the concentration of each PAH in a sample by its B[a]P Potency Equivalence Factor given below and summing the products.	Applies when calculating total carcinogenic polycyclic aromatic hydrocarbons as Benzo[a]pyrene total potency equivalents	high

P Quantitative Requirements (104)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Limit Type	Limit Value	Context	Conditions	Confidence
#P001	chemical	health	guideline	Aluminum	drinking water	MAC	9.5 mg/L	B.C. water quality guidelines for drinking water sources		high
#P002	chemical	health	guideline	Antimony	drinking water	MAC	0.006 mg/L	B.C. water quality guidelines for drinking water sources		high
#P003	chemical	health	guideline	Arsenic	drinking water	MAC	0.01 mg/L	B.C. water quality guidelines for drinking water sources		high
#P004	chemical	health	guideline	Benzene	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P005	chemical	health	guideline	Boron	drinking water	MAC	5.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P006	chemical	health	guideline	Cadmium	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P007	chemical	health	guideline	Carbon Tetrachloride	drinking water	MAC	0.002 mg/L	B.C. water quality guidelines for drinking water sources		high
#P008	chemical	health	guideline	Chlorate	drinking water	MAC	1.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P009	chemical	aesthetic	guideline	Chloride	drinking water	AO	250 mg/L	B.C. water quality guidelines for drinking water sources		high
#P010	chemical	health	guideline	Chlorite	drinking water	MAC	1.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P011	chemical	aesthetic	guideline	Monochlorophenol	drinking water	AO	0.0001 mg/L	B.C. water quality guidelines for drinking water sources		high
#P012	chemical	health	guideline	2,4-dichlorophenol	drinking water	MAC	0.9 mg/L	B.C. water quality guidelines for drinking water sources		high
#P013	chemical	aesthetic	guideline	2,4-dichlorophenol	drinking water	AO	0.0003 mg/L	B.C. water quality guidelines for drinking water sources		high
#P014	chemical	aesthetic	guideline	Total Dichlorophenols	drinking water	AO	0.0003 mg/L	B.C. water quality guidelines for drinking water sources		high
#P015	chemical	health	guideline	2,4,6-trichlorophenol	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P016	chemical	aesthetic	guideline	2,4,6-trichlorophenol	drinking water	AO	0.002 mg/L	B.C. water quality guidelines for drinking water sources		high
#P017	physical	treatment	guideline	Raw drinking water without treatment for particulates	drinking water	requirement	<= 1 NTU	B.C. source drinking water quality guidelines for turbidity.	Raw drinking water without treatment for particulates	high
#P018	physical	treatment	recommended	Raw drinking water with treatment for particulates	drinking water	requirement	<= 5 NTU	Change from background should not exceed 5 NTU.	Natural background turbidity is <= 50 NTU	high
#P019	physical	treatment	recommended	Raw drinking water with treatment for particulates	drinking water	requirement	<= 10 %	Change from background should not exceed 10% of the background turbidity.	Natural background turbidity is > 50 NTU	high
#P020	chemical	aesthetic	guideline	Total Trichlorophenols	drinking water	AO	0.002 mg/L	B.C. water quality guidelines for drinking water sources		high
#P021	chemical	health	guideline	2,3,4,6-tetrachlorophenol	drinking water	MAC	0.1 mg/L	B.C. water quality guidelines for drinking water sources		high
#P022	chemical	aesthetic	guideline	2,3,4,6-tetrachlorophenol	drinking water	AO	0.001 mg/L	B.C. water quality guidelines for drinking water sources		high
#P023	chemical	aesthetic	guideline	Total Tetrachlorophenols	drinking water	AO	0.001 mg/L	B.C. water quality guidelines for drinking water sources		high
#P024	chemical	health	guideline	Pentachlorophenol	drinking water	MAC	0.06 mg/L	B.C. water quality guidelines for drinking water sources		high
#P025	chemical	aesthetic	guideline	Pentachlorophenol	drinking water	AO	0.03 mg/L	B.C. water quality guidelines for drinking water sources		high
#P026	chemical	health	guideline	Chromium	drinking water	MAC	0.05 mg/L	B.C. water quality guidelines for drinking water sources		high
#P027	chemical	health	guideline	Cobalt	drinking water	MAC	0.001 mg/L	B.C. water quality guidelines for drinking water sources		high
#P028	physical	aesthetic	guideline	Colour, True	drinking water	AO	15 TCU	B.C. water quality guidelines for drinking water sources		high
#P029	chemical	health	guideline	Copper	drinking water	MAC	2.0 mg/L	Includes short-term and long-term exposure		high
#P030	chemical	aesthetic	guideline	Copper	drinking water	AO	1.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P031	chemical	health	guideline	Cyanide, Free	drinking water	MAC	0.2 mg/L	B.C. water quality guidelines for drinking water sources		high
#P032	microbiological	health	guideline	Cyanobacterial Toxins: Total Microcystins	drinking water	MAC	0.0015 mg/L	Seasonal guideline		high
#P033	chemical	health	guideline	1,2-Dichlorobenzene	drinking water	MAC	0.2 mg/L	B.C. water quality guidelines for drinking water sources		high
#P034	chemical	aesthetic	guideline	1,2-Dichlorobenzene	drinking water	AO	0.003 mg/L	B.C. water quality guidelines for drinking water sources		high
#P035	chemical	health	guideline	1,4-Dichlorobenzene	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P036	chemical	aesthetic	guideline	1,4-Dichlorobenzene	drinking water	AO	0.001 mg/L	B.C. water quality guidelines for drinking water sources		high
#P037	chemical	health	guideline	1,2-Dichloroethane	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P038	chemical	health	guideline	1,1-Dichloroethylene	drinking water	MAC	0.014 mg/L	B.C. water quality guidelines for drinking water sources		high
#P039	chemical	health	guideline	Dichloromethane	drinking water	MAC	0.05 mg/L	B.C. water quality guidelines for drinking water sources		high
#P040	chemical	health	guideline	Diisopropanolamine (DIPA)	drinking water	MAC	3.5 mg/L	Health-based guideline accounting for all exposure sources		high
#P041	chemical	health	guideline	Ethylbenzene	drinking water	MAC	0.14 mg/L	B.C. water quality guidelines for drinking water sources		high
#P042	chemical	aesthetic	guideline	Ethylbenzene	drinking water	AO	0.0016 mg/L	B.C. water quality guidelines for drinking water sources		high
#P043	chemical	health	guideline	Fluoride	drinking water	MAC	1.5 mg/L	B.C. water quality guidelines for drinking water sources		high
#P044	chemical	aesthetic	guideline	Iron	drinking water	AO	0.3 mg/L	B.C. water quality guidelines for drinking water sources		high
#P045	chemical	health	guideline	Lead	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P046	chemical	health	guideline	Manganese	drinking water	MAC	0.12 mg/L	B.C. water quality guidelines for drinking water sources		high
#P047	chemical	aesthetic	guideline	Manganese	drinking water	AO	0.02 mg/L	B.C. water quality guidelines for drinking water sources		high
#P048	chemical	health	guideline	Mercury	drinking water	MAC	0.001 mg/L	B.C. water quality guidelines for drinking water sources		high
#P049	chemical	aesthetic	guideline	Methyl Tertiary-Butyl Ether	drinking water	AO	0.015 mg/L	B.C. water quality guidelines for drinking water sources		high
#P050	microbiological	health	guideline	Escherichia coli	drinking water	requirement	<= 10 E. coli / 100 mL	90th percentile (minimum of 5 samples)		high
#P051	microbiological	health	guideline	Enterococci	drinking water	requirement	<= 3 Enterococci / 100 mL	90th percentile (minimum of 5 samples)		high
#P052	chemical	health	guideline	Molybdenum	drinking water	MAC	0.088 mg/L	Health-based guideline protective of all age groups		high
#P053	chemical	health	guideline	Monochlorobenzene	drinking water	MAC	0.08 mg/L	B.C. water quality guidelines for drinking water sources		high
#P054	chemical	aesthetic	guideline	Monochlorobenzene	drinking water	AO	0.03 mg/L	B.C. water quality guidelines for drinking water sources		high
#P055	chemical	health	guideline	Nickel	drinking water	MAC	0.08 mg/L	B.C. water quality guidelines for drinking water sources		high
#P056	chemical	health	guideline	Nitrate	drinking water	MAC	45 mg/L	Expressed as nitrate		high
#P057	chemical	health	guideline	Nitrate-N	drinking water	MAC	10 mg/L	Expressed as nitrate-nitrogen		high
#P058	chemical	health	guideline	Nitrilotriacetic acid (NTA)	drinking water	MAC	0.4 mg/L	B.C. water quality guidelines for drinking water sources		high
#P059	chemical	health	guideline	Nitrite	drinking water	MAC	3.0 mg/L	Expressed as nitrite		high
#P060	chemical	health	guideline	Nitrite-N	drinking water	MAC	1.0 mg/L	Expressed as nitrite-nitrogen		high
#P061	chemical	health	guideline	Organic Carbon, Total	drinking water	MAC	4.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P062	chemical	health	guideline	Perfluorooctanoic Acid (PFOA)	drinking water	MAC	0.0002 mg/L	B.C. water quality guidelines for drinking water sources		high
#P063	chemical	health	guideline	Perfluorooctane Sulfonate (PFOS)	drinking water	MAC	0.0006 mg/L	B.C. water quality guidelines for drinking water sources		high
#P064	chemical	aesthetic	guideline	Phosphorus, Total	drinking water	AO	0.01 mg/L	Specifically for lakes		high
#P065	chemical	health	guideline	Polycyclic Aromatic Hydrocarbons (Carcinogenic)	drinking water	MAC	0.00004 mg/L	Includes all carcinogenic PAHs as Benzo[a]pyrene total potency equivalents		high
#P066	chemical	health	guideline	Selenium	drinking water	MAC	0.01 mg/L	B.C. water quality guidelines for drinking water sources		high
#P067	chemical	health	guideline	Strontium	drinking water	MAC	7.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P068	chemical	health	guideline	Sulfolane	drinking water	MAC	0.09 mg/L	Health-based guideline accounting for all exposure sources		high
#P069	chemical	aesthetic	guideline	Sulphate	drinking water	AO	500 mg/L	B.C. water quality guidelines for drinking water sources		high
#P070	physical	aesthetic	guideline	Temperature	drinking water	AO	15 °C	B.C. water quality guidelines for drinking water sources		high
#P071	chemical	health	guideline	Tetrachloroethylene	drinking water	MAC	0.01 mg/L	B.C. water quality guidelines for drinking water sources		high
#P072	chemical	health	guideline	Toluene	drinking water	MAC	0.06 mg/L	B.C. water quality guidelines for drinking water sources		high
#P073	chemical	aesthetic	guideline	Toluene	drinking water	AO	0.024 mg/L	B.C. water quality guidelines for drinking water sources		high
#P074	chemical	health	guideline	Trichloroethylene	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P075	chemical	health	guideline	Uranium	drinking water	MAC	0.02 mg/L	B.C. water quality guidelines for drinking water sources		high
#P076	chemical	health	guideline	Vinyl Chloride	drinking water	MAC	0.002 mg/L	B.C. water quality guidelines for drinking water sources		high
#P077	chemical	health	guideline	Xylenes, Total	drinking water	MAC	0.09 mg/L	B.C. water quality guidelines for drinking water sources		high
#P078	chemical	aesthetic	guideline	Xylenes, Total	drinking water	AO	0.02 mg/L	B.C. water quality guidelines for drinking water sources		high
#P079	chemical	health	guideline	Zinc	drinking water	MAC	3.0 mg/L	Health-based guideline protective of adults		high
#P080	chemical	aesthetic	guideline	Zinc	drinking water	AO	5.0 mg/L	Prevents undesirable bitter taste		high
#P081	chemical	health	guideline	PFOA and PFOS Additive Concentration Ratio	drinking water	requirement	<= 1 unitless	Additive approach for PFOS and PFOA when they occur together in drinking water sources.	PFOS and PFOA occur together	high
#P082	chemical	health	guideline	Benz[a]anthracene Potency Equivalence Factor	drinking water	requirement	0.1 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P083	chemical	health	guideline	Benzo[a]pyrene Potency Equivalence Factor	drinking water	requirement	1 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P084	chemical	health	guideline	Benzo[b+j+k]fluoranthene Potency Equivalence Factor	drinking water	requirement	0.1 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P085	chemical	health	guideline	Chrysene Potency Equivalence Factor	drinking water	requirement	0.01 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P086	chemical	health	guideline	Benzo[g,h,i]perylene Potency Equivalence Factor	drinking water	requirement	0.01 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P087	chemical	health	guideline	Dibenz[a,h]anthracene Potency Equivalence Factor	drinking water	requirement	1 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P088	chemical	health	guideline	Indeno[1,2,3-c,d]pyrene Potency Equivalence Factor	drinking water	requirement	0.1 unitless	Used to calculate Benzo[a]pyrene total potency equivalents (TPE) for carcinogenic PAH MAC.		high
#P089	chemical	health	guideline	Aluminum	drinking water	MAC	9.5 mg/L	B.C. water quality guidelines for drinking water sources		high
#P090	chemical	health	guideline	Antimony	drinking water	MAC	0.006 mg/L	B.C. water quality guidelines for drinking water sources		high
#P091	chemical	health	guideline	Arsenic	drinking water	MAC	0.01 mg/L	B.C. water quality guidelines for drinking water sources		high
#P092	chemical	health	guideline	Benzene	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P093	chemical	health	guideline	Boron	drinking water	MAC	5.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P094	chemical	health	guideline	Cadmium	drinking water	MAC	0.005 mg/L	B.C. water quality guidelines for drinking water sources		high
#P095	chemical	health	guideline	Carbon Tetrachloride	drinking water	MAC	0.002 mg/L	B.C. water quality guidelines for drinking water sources		high
#P096	chemical	health	guideline	Chlorate	drinking water	MAC	1.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P097	chemical	aesthetic	guideline	Chloride	drinking water	AO	250 mg/L	B.C. water quality guidelines for drinking water sources		high
#P098	chemical	health	guideline	Chlorite	drinking water	MAC	1.0 mg/L	B.C. water quality guidelines for drinking water sources		high
#P099	chemical	health	guideline	Trihalomethanes (THM) - Health Canada Guideline	drinking water	MAC	0.1 mg/L	Reference value used to establish TOC source water limits		high
#P100	chemical	health	guideline	Trihalomethanes (THM) - Health-based MAC	drinking water	MAC	0.08 mg/L	Health-based limit excluding financial treatment implications		high
#P101	chemical	health	guidance	Arsenic - Negligible Risk Level	drinking water	treatment_goal	0.0003 mg/L	Concentration representing essentially negligible risk to humans		high
#P102	chemical	health	guidance	Boron - Calculated Health Value	drinking water	treatment_goal	0.2 mg/L	Calculated value based solely on health considerations		high
#P103	chemical	health	guidance	Uranium - Calculated Health Value	drinking water	treatment_goal	0.014 mg/L	Calculated value based solely on health considerations		high
#P104	chemical	health	guideline	PAH Cancer Risk Level	drinking water	requirement	1 in 1,000,000 risk	Risk level used to account for other sources of exposure like food		high

D Definitions (60)

Req ID	Name	Context	Confidence
#D001	AO	Aesthetic objective	high
#D002	B[a]P	Benzo[a]pyrene	high
#D003	B.C.	British Columbia	high
#D004	CSR	Contaminated Sites Regulation	high
#D005	MAC	Maximum acceptable concentration	high
#D006	ENV	B.C. Ministry of Environment and Climate Change Strategy	high
#D007	EPA	Environmental Protection Agency	high
#D008	HLTH	B.C. Ministry of Health	high
#D009	NA	Not applicable	high
#D010	NOAEL	No observed adverse effect level	high
#D011	NTU	Nephelometric turbidity unit	high
#D012	SDWQG	Source drinking water quality guideline	high
#D013	PAH	Polycyclic aromatic hydrocarbon	high
#D014	TCU	Total colour units	high
#D015	THM	Trihalomethane	high
#D016	TPE	Total potency equivalents	high
#D017	WQG	Water quality guideline	high
#D018	Aesthetic Objective	Established for parameters that may impair the taste, smell, or colour of water; or which may interfere with the supply of good quality water. They do not cause adverse health effects.	high
#D019	Ambient	Ambient refers to open waters such as rivers, lakes and streams, as opposed to closed water supply systems that distribute treated water or wastewater.	high
#D020	Disinfection By-Product	Harmful compounds that may result from chemical reactions between organic matter and water treatment chemicals during the water treatment process.	high
#D021	Indicator Organism	Microbiological indicators of water quality include bacteria such as fecal coliforms, Escherichia coli and enterococci, which indicate the risk of disease from bacteria, viruses, and other pathogenic organisms which could be harmful to human health.	high
#D022	Maximum Acceptable Concentration	A level that has been established for certain substances that are known or suspected to cause adverse health effects.	high
#D023	No Observed Adverse Effect Level	The highest tested concentration of a substance at which no such adverse effect is found in exposed test organisms where higher doses or concentrations resulted in an adverse effect.	high
#D024	Operational Water Treatment Guideline	An operational guidance value, provided by Health Canada in this case, used in water treatment processes which treated water must meet before it enters the distribution system.	high
#D025	Water quality guidelines (WQGs)	conservative estimates of low-risk levels for chemical, physical, and biological attributes that are important in both fresh and marine waters.	high
#D026	Total potency equivalents (TPE)	calculated by multiplying the concentration of each PAH in a sample by its B[a]P Potency Equivalence Factor given below and summing the products.	high
#D027	drinking water treatment objectives	minimum performance targets for water suppliers to treat water to produce microbiologically safe drinking water	high
#D028	Turbidity	caused by biotic and abiotic suspended or dissolved substances in the water body and often represent a microbiological risk to drinking water.	high
#D029	Escherichia coli	the only member of the coliform group specific to the feces of warm-blooded animals and outnumbers the other thermotolerant coliforms in both human and animal excreta	high
#D030	Enterococci	the preferred fecal bacterial indicator in reservoirs, sewage contaminated waters and marine waters.	high
#D031	DIPA	Diisopropanolamine	high
#D032	MTBE	Methyl Tertiary-Butyl Ether	high
#D033	NTA	Nitrilotriacetic acid	high
#D034	PFOA	Perfluorooctanoic Acid	high
#D035	PFOS	Perfluorooctane Sulfonate	high
#D036	drinking water treatment objectives	expectations for disinfection to reduce microbiological risks in potable water as required by Schedule A of the Drinking Water Protection Regulation	high
#D037	AO	Aesthetic objective	high
#D038	B[a]P	Benzo[a]pyrene	high
#D039	B.C.	British Columbia	high
#D040	CSR	Contaminated Sites Regulation	high
#D041	MAC	Maximum acceptable concentration	high
#D042	ENV	B.C. Ministry of Environment and Climate Change Strategy	high
#D043	EPA	Environmental Protection Agency	high
#D044	HLTH	B.C. Ministry of Health	high
#D045	NA	Not applicable	high
#D046	NOAEL	No observed adverse effect level	high
#D047	NTU	Nephelometric turbidity unit	high
#D048	SDWQG	Source drinking water quality guideline	high
#D049	PAH	Polycyclic aromatic hydrocarbon	high
#D050	TCU	Total colour units	high
#D051	THM	Trihalomethane	high
#D052	TPE	Total potency equivalents	high
#D053	WQG	Water quality guideline	high
#D054	Aesthetic Objective	Established for parameters that may impair the taste, smell, or colour of water; or which may interfere with the supply of good quality water. They do not cause adverse health effects.	high
#D055	Ambient	Ambient refers to open waters such as rivers, lakes and streams, as opposed to closed water supply systems that distribute treated water or wastewater.	high
#D056	Disinfection By-Product	Harmful compounds that may result from chemical reactions between organic matter and water treatment chemicals during the water treatment process.	high
#D057	Indicator Organism	Microbiological indicators of water quality include bacteria such as fecal coliforms, Escherichia coli and enterococci, which indicate the risk of disease from bacteria, viruses, and other pathogenic organisms which could be harmful to human health.	high
#D058	Maximum Acceptable Concentration	A level that has been established for certain substances that are known or suspected to cause adverse health effects.	high
#D059	No Observed Adverse Effect Level	The highest tested concentration of a substance at which no such adverse effect is found in exposed test organisms where higher doses or concentrations resulted in an adverse effect.	high
#D060	Operational Water Treatment Guideline	An operational guidance value, provided by Health Canada in this case, used in water treatment processes which treated water must meet before it enters the distribution system.	high