Canadian Council of Ministers
of the Environment

Le Conseil canadien des ministres
de l'environnement

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Lead


Parameter 1: INORGANIC
Parameter 3: Metals

Water Quality for the Protection of Aquatic Life

Freshwater

Concentration (μg/L)

Equation

The CWQG for lead is related to water hardness (as CaCO3):

When the hardness is 0 to ≤ 60 mg/L, the CWQG is 1 µg/L

At hardness >60  to ≤ 180 mg/L the CWQG is calculated using this equation (see calculator below)

CWQG (µg/L)= e{1.273[ln(hardness)]-4.705}

At hardness >180 mg/L, the CWQG is 7 µg/L

If the hardness is unknown, the CWQG is 1 µg/L

The online calculator (below) will return the correct value over the entire range of hardness.

 

Enter water hardness here:
mg/L CaCO3

 

 

Calculated lead guideline:
µg/L Pb

 

 

Note: No fact sheet created. For more information on this guideline, please refer to Canadian Water Quality Guidelines (CCREM 1987). Out of convenience, this guideline was presented as a range depending upon the water hardness in earlier versions of CCME (1999). It is now presented as an equation as it originally appears in CCREM (1987).

 

 

 

 

Date

1987

Marine

Concentration (μg/L)

No data

Date

No data

Water Quality for the Protection of Agriculture

Irrigation

Concentration (μg/L)

200

No fact sheet created. For more information on this guideline, please refer to Canadian Water Quality Guidelines (CCREM 1987).

Date

1987

Livestock

Concentration (μg/L)

100

No fact sheet created. For more information on this guideline, please refer to Canadian Water Quality Guidelines (CCREM 1987).

Date

1987

Sediment Quality for the Protection of Aquatic Life

Further documentation on these guidelines can be found in the Canadian Environment Quality Guidelines.
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Freshwater

Concentration (μg/kg dry weight) - ISQG

35 000
Guideline % ≤ ISQG ISQG < % < PEL ISQG % ≥ PEL
Lead 5 23 42

Concentration (μg/kg dry weight) - PEL

91 300
Guideline % ≤ ISQG ISQG < % < PEL ISQG % ≥ PEL
Lead 5 23 42

Date

1998

Marine

Concentration (μg/kg dry weight) - ISQG

30 200
Guideline % ≤ ISQG ISQG < % < PEL ISQG % ≥ PEL
Lead 6 26 58

Concentration (μg/kg dry weight) - PEL

112 000
Guideline % ≤ ISQG ISQG < % < PEL ISQG % ≥ PEL
Lead 6 26 58

Date

1998

Soil Quality for the Protection of Environmental and Human Health

Further documentation on these guidelines can be found in the Canadian Environment Quality Guidelines.
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Concentration (mg/kg dry weight) - Agricultural

70

Data are sufficient and adequate to calculate a Soil Quality Guideline for Human Health (SQGHH) and a Soil Quality Guideline for Environmental Health (SQGE). Therefore the soil quality guideline is the lower of the two and represents a fully integrated de novo guideline for this land use, derived in accordance with the soil protocol (CCME 1996;2006). The corresponding interim soil quality criterion (CCME 1991) is superseded by the soil quality guideline.

For guidelines derived prior to 2004, differentiation between soil texture (coarse/fine) is not applicable.

Concentration (mg/kg dry weight) - Residential / parkland

140

Data are sufficient and adequate to calculate a Soil Quality Guideline for Human Health (SQGHH) and a Soil Quality Guideline for Environmental Health (SQGE). Therefore the soil quality guideline is the lower of the two and represents a fully integrated de novo guideline for this land use, derived in accordance with the soil protocol (CCME 1996;2006). The corresponding interim soil quality criterion (CCME 1991) is superseded by the soil quality guideline.

For guidelines derived prior to 2004, differentiation between soil texture (coarse/fine) is not applicable.

Concentration (mg/kg dry weight) - Commercial

260

Data are sufficient and adequate to calculate a Soil Quality Guideline for Human Health (SQGHH) and a Soil Quality Guideline for Environmental Health (SQGE). Therefore the soil quality guideline is the lower of the two and represents a fully integrated de novo guideline for this land use, derived in accordance with the soil protocol (CCME 1996;2006). The corresponding interim soil quality criterion (CCME 1991) is superseded by the soil quality guideline.

For guidelines derived prior to 2004, differentiation between soil texture (coarse/fine) is not applicable.

Concentration (mg/kg dry weight) - Industrial

600

Data are sufficient and adequate to calculate a Soil Quality Guideline for Human Health (SQGHH) and a Soil Quality Guideline for Environmental Health (SQGE). Therefore the soil quality guideline is the lower of the two and represents a fully integrated de novo guideline for this land use, derived in accordance with the soil protocol (CCME 1996;2006). The corresponding interim soil quality criterion (CCME 1991) is superseded by the soil quality guideline.

For guidelines derived prior to 2004, differentiation between soil texture (coarse/fine) is not applicable.

Date

1999

Tissue Residue Quality for the Protection of Widlife Consumer of Aquatic Biota

Concentration (µg/kg diet wet weight)

No data

Date

No data