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Annex 2: Water quality guidelines used by Manitoba

Water quality guidelines used by Manitoba
ParameterFormGuidelineSource
2,4-D 4 µg/La
AmmoniaFootnote 1total as NCalculation based on pH and temperatureb, c
AmmoniaFootnote 2un-ionized19 µg/Ld
ArsenicFootnote 1extractable, total150 µg/Le
ArsenicFootnote 2total5 µg/La
CadmiumFootnote 1extractable, total[e0.7409ln[hardness]−4.719] x [1.101672 – {In(hardness)(0.041838)}] µg/L
where hardness as mg [CaCO3]/L]
f
ChlorideFootnote 2dissolved120 mg/La
CopperFootnote 1extractable, total[e0.8545ln[hardness]-1.702] x (0.96) µg/L
where hardness as mg [CaCO3]/L
b
CopperFootnote 2total2 µg/L for hardness < 90 mg [CaCO3]/L
[e0.8545ln[hardness]-1.465] x (0.2) µg/L for hardness > 90 mg [CaCO3]/L
where hardness as mg [CaCO3]/L]
d
IronFootnote 1total0.3 mg/Ld
Leadextractable, total[e1.273ln[hardness]-4.705] x [1.46203 – {ln(hardness)(0.145712}] µg/L
where hardness as mg [CaCO3]/L
d
MCPA 2.6 µg/La
NickelFootnote 1extractable, total[e0.8460ln[hardness]+0.0584] x [0.997]µg/L
where hardness as mg [CaCO3]/L
e
NitrateFootnote 1total dissolved2.9 mg N/Ld
NickelFootnote 2total< e0.76[ln(hardness)]+1.06 µg/L
where hardness as mg [CaCO3]/L
d
NitrogenFootnote 2total1 mg N/Lh
OxygenFootnote 1dissolved5 mg/Le
OxygenFootnote 2dissolved6.5 mg/La
pH between 6.5 and 9a
Phosphorustotal0.05 mg/Lb, g
Suspended sedimentsFootnote 1totalMaximum increase of 25 mg/L for high flow and turbid waters above background levelsd
ZincFootnote 1total[e{0.8473ln[hardness]+0.884}] x [0.986] µg/L
where hardness as mg [CaCO3]/L
b, f
ZincFootnote 2total7.5 µg/L for hardness ≤ 90 mg [CaCO3]/L
7.5 + 0.75*(hardness-90) for hardness > 90 mg [CaCO3]/L
where hardness as mg [CaCO3]/L
d

Footnotes

Footnote 1

Applies to sites monitored under provincial monitoring programs.

Return to footnote 1 referrer

Footnote 2

Applies to sites monitored under federal monitoring programs (Prairie Provinces Water Board).

Return to footnote 2 referrer

Manitoba Water Quality Guideline Sources:

a
Canadian Council of Ministers of the Environment (2007) Canadian Water Quality Guidelines for the Protection of Aquatic Life: Summary table, Update 7.1. Retrieved on 17 December, 2013.
b
Manitoba Water Stewardship (2011) Manitoba water quality standards, objectives, and guidelines. (PDF; 905.2 KB) Retrieved on 17 December, 2013.
c
United States Environmental Protection Agency (1999a) Update of Ambient Water Quality Criteria for Ammonia. Document EPA 822-R-99-014. (PDF; 790.58 KB) Retrieved on 17 December, 2013.
d
Government of Canada (2008) Technical guidance document for water quality index practitioners reporting under the Canadian Environmental Sustainability Indicators (CESI) initiative. Environment Canada and Statistics Canada. Retrieved on 17 December, 2013.
e
United States Environmental Protection Agency (2009) National Recommended Water Quality Criteria. Retrieved on 17 December, 2013.
f
United States Environmental Protection Agency (1999b) National recommended water quality criteria – correction. Document EPA 822-Z-99-001. (PDF; 340.25 KB) Retrieved on 17 December, 2013.
g
Prairie Provinces Water Board (1992) Master Agreement on Apportionment. Schedule E: Agreement on Water Quality. Retrieved on 17 December, 2013.

Annex 2: Water quality guidelines used by each province and territory