Water Quality Guidelines
for the Protection of Aquatic Life
Freshwater Marine
Concentration
(μg/L)
Concentration
(μg/L)
Date Concentration
(μg/L)
Concentration
(μg/L)
Date
Chemical name Chemical groups Short TermLong Term Short TermLong Term
1,1,1-Trichloroethane

CASRN 71556
Organic
Halogenated aliphatic compounds
Chlorinated ethanes
No data Insufficient data 1991 No data Insufficient data 1991
1,1,2,2- Tetrachloroethene
PCE (Tetrachloroethylene)
CASRN 127184
Organic
Halogenated aliphatic compounds
Chlorinated ethenes
No data 110 1993 No data Insufficient data 1993
1,1,2,2-Tetrachlorethane

CASRN 79345
Organic
Halogenated aliphatic compounds
Chlorinated ethanes
No data Insufficient data 1991 No data Insufficient data 1991
1,1,2-Trichloroethene
TCE (Trichloroethylene)
CASRN 79-01-6
Organic
Halogenated aliphatic compounds
Chlorinated ethenes
No data 21 1991 No data Insufficient data 1991
1,2,3,4-Tetrachlorobenzene

CASRN 634662
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 1.8 1997 No data Insufficient data 1997
1,2,3,5-Tetrachlorobenzene
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data Insufficient data 1997 No data Insufficient data 1997
1,2,3-Trichlorobenzene

CASRN 87616
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 8 1997 No data Insufficient data 1997
1,2,4,5-Tetrachlorobenzene
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data Insufficient data 1997 No data Insufficient data 1997
1,2,4-Trichlorobenzene

CASRN 120801
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 24 1997 No data 5.4 1997
1,2-Dichlorobenzene

CASRN 95501
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 0.7 1997 No data 42 1997
1,2-Dichloroethane

CASRN 1070602
Organic
Halogenated aliphatic compounds
Chlorinated ethanes
No data 100 1991 No data Insufficient data 1991
1,3,5-Trichlorobenzene
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data Insufficient data 1997 No data Insufficient data 1997
1,3-Dichlorobenzene

CASRN 541731
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 150 1997 No data Insufficient data 1997
1,4-Dichlorobenzene

CASRN 106467
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 26 1997 No data Insufficient data 1997
1,4-Dioxane
NRG NRG 2008 NRG NRG 2008
3-Iodo-2-propynyl butyl carbamate
IPBC
CASRN 55406-53-6
Organic
Pesticides
Carbamate pesticides
No data 1.9 1999 No data No data No data
Acenaphthene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 5.8 1999 No data Insufficient data 1999
Acenaphthylene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data No data 1999 No data No data 1999
Acridine
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 4.4 1999 No data Insufficient data 1999
Aldicarb

CASRN 116063
Organic
Pesticides
Carbamate pesticides
No data 1 1993 No data 0.15 1993
Aldrin
Organic
Pesticides
Organochlorine compounds
No data 0.004 1987 No data No data No data
Aluminium
Inorganic
No data Variable 1987 No data No data No data
Ammonia (total)
Inorganic
Inorganic nitrogen compounds
No data Table 2001 No data No data No data
Ammonia (un-ionized)

CASRN 7664417
Inorganic
Inorganic nitrogen compounds
No data 19 2001 No data No data No data
Aniline

CASRN 62533
Organic
No data 2.2 1993 No data Insufficient data 1993
Anthracene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 0.012 1999 No data Insufficient data 1999
Arsenic

CASRN none
Inorganic
No data 5 1997 No data 12.5 1997
Atrazine

CASRN 1912249
Organic
Pesticides
Triazine compounds
No data 1.8 1989 No data No data No data
Benz(a)anthracene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 0.018 1999 No data Insufficient data 1999
Benzene

CASRN 71432
Organic
Monocyclic aromatic compounds
No data 370 1999 No data 110 1999
Benzo(a)pyrene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 0.015 1999 No data Insufficient data 1999
Boron
Inorganic
29,000μg/L or 29mg/L 1,500μg/L or 1.5mg/L 2009 NRG NRG 2009
Bromacil

CASRN 314409
Organic
Pesticides
No data 5 1997 No data Insufficient data 1997
Bromoxynil
Organic
Pesticides
Benzonitrile compounds
No data 5 1993 No data Insufficient data 1993
Benchmark
(μg/L)
Guideline
(μg/L)
Date Concentration
(μg/L)
Concentration
(μg/L)
Date
Chemical name Chemical groups Short TermLong Term Short TermLong Term
Cadmium

CASRN 7440439
Inorganic
1.0 0.09 2014 NRG 0.12 2014
Concentration
(μg/L)
Concentration
(μg/L)
Date Concentration
(μg/L)
Concentration
(μg/L)
Date
Chemical name Chemical groups Short TermLong Term Short TermLong Term
Captan

CASRN 133062
Organic
Pesticides
No data 1.3 1991 No data No data No data
Carbaryl

CASRN 63252
Organic
Pesticides
Carbamate pesticides
3.3 0.2 2009 5.7 0.29 2009
Carbofuran

CASRN 1564662
Organic
Pesticides
Carbamate pesticides
No data 1.8 1989 No data No data No data
Chlordane
Organic
Pesticides
Organochlorine compounds
No data 0.006 1987 No data No data No data
Chloride
Inorganic
640,000 µg/L or 640 mg/L 120,000 µg/L or 120 mg/L 2011 NRG NRG 2011
Chlorothalonil

CASRN 1897456
Organic
Pesticides
No data 0.18 1994 No data 0.36 1994
Chlorpyrifos

CASRN 2921882
Organic
Pesticides
Organophosphorus compounds
0.02 0.002 2008 NRG 0.002 2008
Chromium, hexavalent (Cr(VI))

CASRN 7440473
Inorganic
No data 1 1997 No data 1.5 1997
Chromium, trivalent (Cr(III))

CASRN 7440473
Inorganic
No data 8.9 1997 No data 56 1997
Chrysene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data Insufficient data 1999 No data Insufficient data 1999
Colour

CASRN N/A
Physical
No data Narrative 1999 No data Narrative 1999
Copper
Inorganic
No data Equation 1987 No data No data No data
Cyanazine

CASRN 2175462
Organic
Pesticides
Triazine compounds
No data 2 1990 No data No data No data
Cyanide
Inorganic
No data 5 (as free CN) 1987 No data No data No data
Debris

CASRN N/A
Physical
No data No data No data No data Narrative 1996
Deltamethrin

CASRN 52918635
Organic
Pesticides
No data 0.0004 1997 No data Insufficient data 1997
Deposited bedload sediment
Physical
Turbidity, clarity and suspended solids
Total particulate matter
No data Insufficient data 1999 No data Insufficient data 1999
Di(2-ethylhexyl) phthalate

CASRN 117817
Organic
Phthalate esters
No data 16 1993 No data Insufficient data 1993
Di-n-butyl phthalate

CASRN 84742
Organic
Phthalate esters
No data 19 1993 No data Insufficient data 1993
Di-n-octyl phthalate

CASRN 117840
Organic
Phthalate esters
No data Insufficient data 1993 No data Insufficient data 1993
Dibromochloromethane
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data Insufficient data 1992 No data Insufficient data 1992
Dicamba

CASRN 1918009
Organic
Pesticides
Aromatic Carboxylic Acid
No data 10 1993 No data No data No data
Dichloro diphenyl trichloroethane; 2,2-Bis(p-chlorophenyl)-1,1,1-trichloroethane
DDT (total)
Organic
Pesticides
Organochlorine compounds
No data 0.001 1987 No data No data No data
Dichlorobromomethane
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data Insufficient data 1992 No data Insufficient data 1992
Dichloromethane
Methylene chloride
CASRN 75092
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data 98.1 1992 No data Insufficient data 1992
Dichlorophenols
Organic
Monocyclic aromatic compounds
Chlorinated phenols
No data 0.2 1987 No data No data No data
Diclofop-methyl

CASRN 51338273
Organic
Pesticides
No data 6.1 1993 No data No data No data
Didecyl dimethyl ammonium chloride
DDAC
CASRN 7173515
Organic
Pesticides
No data 1.5 1999 No data Insufficient data 1999
Diethylene glycol

CASRN 111466
Organic
Glycols
No data Insufficient data 1997 No data Insufficient data 1997
Diisopropanolamine
DIPA
CASRN 110974
Organic
No data 1600 2005 No data Insufficient data 2005
Dimethoate

CASRN 60515
Organic
Pesticides
Organophosphorus compounds
No data 6.2 1993 No data Insufficient data 1993
Dinoseb

CASRN 88857
Organic
Pesticides
No data 0.05 1992 No data No data No data
Dissolved gas supersaturation

CASRN N/A
Physical
No data Narrative 1999 No data Narrative 1999
Dissolved oxygen
DO
CASRN N/A
Inorganic
No data Variable 1999 No data >8000 & Narrative 1996
Endosulfan
Organic
Pesticides
Organochlorine compounds
0.06 0.003 2010 0.09 0.002 2010
Endrin
Organic
Pesticides
Organochlorine compounds
No data 0.0023 1987 No data No data No data
Ethylbenzene

CASRN 100414
Organic
Monocyclic aromatic compounds
No data 90 1996 No data 25 1996
Ethylene glycol

CASRN 107211
Organic
Glycols
No data 192 000 1997 No data Insufficient data 1997
Fluoranthene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 0.04 1999 No data Insufficient data 1999
Fluorene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 3 1999 No data Insufficient data 1999
Fluoride
Inorganic
No data 120 2002 No data NRG 2002
Glyphosate

CASRN 1071836
Organic
Pesticides
Organophosphorus compounds
27,000 800 2012 NRG NRG 2012
Heptachlor
Heptachlor epoxide
Organic
Pesticides
Organochlorine compounds
No data 0.01 1987 No data No data No data
Hexachlorobenzene
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data Insufficient data 1997 No data Insufficient data 1997
Hexachlorobutadiene
HCBD
CASRN 87683
Organic
Halogenated aliphatic compounds
No data 1.3 1999 No data No data No data
Hexachlorocyclohexane
Lindane
Organic
Pesticides
Organochlorine compounds
No data 0.01 1987 No data No data No data
Imidacloprid

CASRN 13826413
No data 0.23 2007 No data 0.65 2007
Iron
Inorganic
No data 300 1987 No data No data No data
Lead
Inorganic
No data Equation 1987 No data No data No data
Linuron

CASRN 41205214
Organic
Pesticides
No data 7 1995 No data No data 1995
Mercury

CASRN 7439976
Inorganic
No data 0.026 2003 No data 0.016 2003
Methoprene

CASRN 40596698
No data 0.09 (Target Organism Management value: 0.53) 2007 No data Insufficient data 2007
Methyl tertiary-butyl ether
MTBE
CASRN 1634044
Organic
Non-halogenated aliphatic compounds
Aliphatic ether
No data 10 000 2003 No data 5 000 2003
Methylchlorophenoxyacetic acid (4-Chloro-2-methyl phenoxy acetic acid; 2-Methyl-4-chloro phenoxy acetic acid)
MCPA
CASRN 94746
Organic
Pesticides
No data 2.6 1995 No data 4.2 1995
Methylmercury
Organic
No data 0.004 2003 No data NRG 2003
Metolachlor

CASRN 51218452
Organic
Pesticides
Organochlorine compounds
No data 7.8 1991 No data No data No data
Metribuzin

CASRN 21087649
Organic
Pesticides
Triazine compounds
No data 1 1990 No data No data No data
Molybdenum
Inorganic
No data 73 1999 No data No data No data
Monobromomethane
Methyl bromide
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data Insufficient data 1992 No data Insufficient data 1992
Monochlorobenzene

CASRN 108907
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 1.3 1997 No data 25 1997
Monochloromethane
Methyl chloride
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data Insufficient data 1992 No data Insufficient data 1992
Monochlorophenols
Organic
Monocyclic aromatic compounds
Chlorinated phenols
No data 7 1987 No data No data No data
Naphthalene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 1.1 1999 No data 1.4 1999
Nickel
Inorganic
No data Equation 1987 No data No data No data
Nitrate

CASRN 14797-55-8
Inorganic
Inorganic nitrogen compounds
550,000 µg/L or 550 mg/L 13,000 µg/L or 13 mg/L 2012 1,500,000 µg/L or 1500 mg/L 200,000 µg/L or 200 mg/L 2012
Nitrite
Inorganic
Inorganic nitrogen compounds
No data 60 NO2-N 1987 No data No data No data
Nonylphenol and its ethoxylates

CASRN 84852153
Organic
Nonylphenol and its ethoxylates
No data 1 2002 No data 0.7 2002
Nutrients
No data Guidance Framework 2004 No data Guidance framework 2007
Pentachlorobenzene

CASRN 608935
Organic
Monocyclic aromatic compounds
Chlorinated benzenes
No data 6 1997 No data Insufficient data 1997
Pentachlorophenol
PCP
Organic
Monocyclic aromatic compounds
Chlorinated phenols
No data 0.5 1987 No data No data No data
Permethrin

CASRN 52645531
Organic
Pesticides
Organochlorine compounds
No data 0.004 2006 No data 0.001 2006
Phenanthrene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 0.4 1999 No data Insufficient data 1999
Phenols (mono- & dihydric)

CASRN 108952
Organic
Aromatic hydroxy compounds
No data 4 1999 No data No data No data
Phenoxy herbicides
2,4 D; 2,4-Dichlorophenoxyacetic acid
Organic
Pesticides
No data 4 1987 No data No data No data
Phosphorus
Inorganic
No data Guidance Framework 2004 No data Guidance Framework 2007
Picloram

CASRN 1918021
Organic
Pesticides
No data 29 1990 No data No data No data
Polychlorinated biphenyls
PCBs
Organic
Polyaromatic compounds
Polychlorinated biphenyls
No data 0.001 1987 No data 0.01 1991
Propylene glycol

CASRN 57556
Organic
Glycols
No data 500 000 1997 No data Insufficient data 1997
Pyrene
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 0.025 1999 No data Insufficient data 1999
pH
Inorganic
Acidity, alkalinity and pH
No data 6.5 to 9.0 1987 No data 7.0 to 8.7 & Narrative 1996
Quinoline
PAHs
Organic
Polyaromatic compounds
Polycyclic aromatic hydrocarbons
No data 3.4 1999 No data Insufficient data 1999
Reactive Chlorine Species
total residual chlorine, combined residual chlorine, total available chlorine, hypochlorous acid, chloramine, combined available chlorine, free residual chlorine, free available chlorine, chlorine-produced oxidants
Inorganic
Reactive chlorine compunds
No data 0.5 1999 No data 0.5 1999
Salinity
Physical
No data No data No data No data Narrative 1996
Selenium
Inorganic
No data 1 1987 No data No data No data
Silver
Inorganic
No data 0.1 1987 No data No data No data
Simazine

CASRN 122349
Organic
Pesticides
Triazine compounds
No data 10 1991 No data No data No data
           
Concentration Concentration Date Concentration Concentration Date
Chemical name Chemical groups Short TermLong Term Short TermLong Term
Sodium adsorption ratio
SAR
No data No data No data No data No data No data
Concentration
(μg/L)
Concentration
(μg/L)
Date Concentration
(μg/L)
Concentration
(μg/L)
Date
Chemical name Chemical groups Short TermLong Term Short TermLong Term
Streambed substrate
Physical
Turbidity, clarity and suspended solids
Total particulate matter
No data Narrative 1999 No data Narrative 1999
Styrene

CASRN 100425
Organic
Monocyclic aromatic compounds
No data 72 1999 No data No data No data
Sulfolane
Bondelane
CASRN 126330
Organic
Organic sulphur compound
No data 50 000 2005 No data Insufficient data 2005
Suspended sediments
TSS
Physical
Turbidity, clarity and suspended solids
Total particulate matter
No data Narrative 1999 No data Narrative 1999
Tebuthiuron

CASRN 34014181
Organic
Pesticides
No data 1.6 1995 No data Insufficient data 1995
Temperature
Physical
Temperature
No data Narrative 1987 No data Narrative 1996
Tetrachloromethane
Carbon tetrachloride
CASRN 56235
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data 13.3 1992 No data Insufficient data 1992
Tetrachlorophenols
Organic
Monocyclic aromatic compounds
Chlorinated phenols
No data 1 1987 No data No data No data
Thallium
Inorganic
No data 0.8 1999 No data No data No data
Toluene

CASRN 108883
Organic
Monocyclic aromatic compounds
No data 2 1996 No data 215 1996
Toxaphene
Organic
Pesticides
Organochlorine compounds
No data 0.008 1987 No data No data No data
Triallate

CASRN 2303175
Organic
Pesticides
Carbamate pesticides
No data 0.24 1992 No data No data No data
Tribromomethane
Bromoform
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data Insufficient data 1992 No data Insufficient data 1992
Tributyltin
Organic
Organotin compounds
No data 0.008 1992 No data 0.001 1992
Trichlorfon

CASRN 52-68-6
1.1 0.009 2012 NRG NRG 2012
Trichloromethane
Chloroform
CASRN 67663
Organic
Halogenated aliphatic compounds
Halogenated methanes
No data 1.8 1992 No data Insufficient data 1992
Trichlorophenols
Organic
Monocyclic aromatic compounds
Chlorinated phenols
No data 18 1987 No data No data No data
Tricyclohexyltin
Organic
Organotin compounds
No data Insufficient data 1992 No data Insufficient data 1992
Trifluralin

CASRN 1582098
Organic
Pesticides
Dinitroaniline pesticides
No data 0.2 1993 No data No data No data
Triphenyltin
Organic
Organotin compounds
No data 0.022 1992 No data No data 1992
Turbidity
Physical
Turbidity, clarity and suspended solids
Total particulate matter
No data Narrative 1999 No data Narrative 1999
Uranium

CASRN 7440-61-1
Inorganic
33 15 2011 NRG NRG 2011
Zinc
Inorganic
No data 30 1987 No data No data No data