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Table 5. Maximum Concentration of Total Ammonia Nitrogen for Protection of Aquatic Life

Temperature (T) in degrees Celsius

pH
T=0.0
T=1.0
T=2.0
T=3.0
T=4.0
T=5.0
T=6.0
6.5
27.7
28.3
27.9
27.5
27.2
26.8
26.5
6.6
27.9
27.5
27.2
26.8
26.4
26.1
25.8
6.7
26.9
26.5
26.2
25.9
25.5
25.2
24.9
6.8
25.8
25.5
25.1
24.8
24.5
24.2
23.9
6.9
24.6
24.2
23.9
23.6
23.3
23.0
22.7
7.0
23.2
22.8
22.5
22.2
21.9
21.6
21.4
7.1
21.6
21.3
20.9
20.7
20.4
20.2
19.9
7.2
19.9
19.6
19.3
19.0
18.8
18.6
18.3
7.3
18.1
17.8
17.5
17.3
17.1
16.9
16.7
7.4
16.2
16.0
15.7
15.5
15.3
15.2
15.0
7.5
14.4
14.1
14.0
13.8
13.6
13.4
13.3
7.6
12.6
12.4
12.2
12.0
11.9
11.7
11.6
7.7
10.8
10.7
10.5
10.4
10.3
10.1
10.0
7.8
9.26
9.12
8.98
8.88
8.77
8.67
8.57
7.9
7.82
7.71
7.60
7.51
7.42
7.33
7.25
8.0
6.55
6.46
6.37
6.29
6.22
6.14
6.08
8.1
5.21
5.14
5.07
5.01
4.95
4.90
4.84
8.2
4.15
4.09
4.04
3.99
3.95
3.90
3.86
8.3
3.31
3.27
3.22
3.19
3.15
3.12
3.09
8.4
2.64
2.61
2.57
2.54
2.52
2.49
2.47
8.5
2.11
2.08
2.06
2.03
2.01
1.99
1.98
8.6
1.69
1.67
1.65
1.63
1.61
1.60
1.59
8.7
1.35
1.33
1.32
1.31
1.30
1.29
1.28
8.8
1.08
1.07
1.06
1.05
1.04
1.04
1.03
8.9
0.871
0.863
0.856
0.849
0.844
0.839
0.836
9.0
0.703
0.697
0.692
0.688
0.685
0.682
0.681


Temperature (T) in degrees Celsius

pH
T=7.0
T=8.0
T=9.0
T=10.0
T=11.0
T=12.0
T=13.0
6.5
26.2
26.0
25.7
25.5
25.2
25.0
24.8
6.6
25.5
25.2
25.0
24.7
24.5
24.3
24.1
6.7
24.6
24.4
24.1
23.9
23.7
23.5
23.3
6.8
23.6
23.4
23.1
22.9
22.7
22.5
22.3
6.9
22.5
22.2
22.0
21.8
21.6
21.4
21.3
7.0
21.1
20.9
20.7
20.5
20.3
20.2
20.0
7.1
19.7
19.5
19.3
19.1
18.9
18.8
18.7
7.2
18.1
17.9
17.8
17.6
17.4
17.3
17.2
7.3
16.5
16.3
16.2
16.0
15.9
15.7
15.6
7.4
14.8
14.7
14.5
14.4
14.2
14.1
14.0
7.5
13.1
13.0
12.9
12.7
12.6
12.5
12.4
7.6
11.5
11.4
11.3
11.2
11.1
11.0
10.9
7.7
9.92
9.83
9.73
9.65
9.57
9.50
9.43
7.8
8.48
8.40
8.32
8.25
8.18
8.12
8.07
7.9
7.17
7.10
7.04
6.98
6.92
6.88
6.83
8.0
6.02
5.96
5.91
5.86
5.81
5.78
5.74
8.1
4.80
4.75
4.71
4.67
4.64
4.61
4.59
8.2
3.83
3.80
3.76
3.74
3.71
3.69
3.67
8.3
3.06
3.03
3.01
2.99
2.97
2.96
2.94
8.4
2.45
2.43
2.41
2.40
2.38
2.37
2.36
8.5
1.96
1.95
1.94
1.93
1.92
1.91
1.91
8.6
1.58
1.57
1.56
1.55
1.55
1.54
1.54
8.7
1.27
1.26
1.26
1.25
1.25
1.25
1.25
8.8
1.03
1.02
1.02
1.02
1.02
1.02
1.02
8.9
0.833
0.832
0.831
0.831
0.832
0.834
0.838
9.0
0.681
0.681
0.681
0.682
0.684
0.688
0.692


Temperature (T) in degrees Celsius

pH
T=14.0
T=15.0
T=16.0
T=17.0
T=18.0
T=19.0
T=20.0
6.5
24.6
24.5
24.3
24.2
24.0
23.9
23.8
6.6
23.9
23.8
23.6
23.5
23.3
23.3
23.2
6.7
23.1
23.0
22.8
22.7
22.6
22.5
22.4
6.8
22.2
22.0
21.9
21.8
21.7
21.6
21.5
6.9
21.1
21.0
20.8
20.7
20.6
20.5
20.4
7.0
19.9
19.7
19.6
19.5
19.4
19.3
19.2
7.1
18.5
18.4
18.3
18.2
18.1
18.0
17.9
7.2
17.1
16.9
16.8
16.8
16.7
16.6
16.5
7.3
15.5
15.4
15.3
15.2
15.2
15.1
15.1
7.4
13.9
13.9
13.8
13.7
13.6
13.6
13.5
7.5
12.4
12.3
12.2
12.2
12.1
12.1
12.0
7.6
10.8
10.8
10.7
10.7
10.6
10.6
10.5
7.7
9.37
9.31
9.26
9.22
9.18
9.15
9.12
7.8
8.02
7.97
7.93
7.90
7.87
7.84
7.82
7.9
6.79
6.75
6.72
6.69
6.67
6.65
6.64
8.0
5.71
5.68
5.66
5.64
5.62
5.61
5.60
8.1
4.56
4.54
4.53
4.51
4.50
4.49
4.49
8.2
3.65
3.64
3.63
3.62
3.61
3.61
3.61
8.3
2.93
2.92
2.92
2.91
2.91
2.91
2.91
8.4
2.36
2.35
2.35
2.35
2.35
2.35
2.36
8.5
1.90
1.90
1.90
1.90
1.90
1.91
1.92
8.6
1.54
1.54
1.54
1.55
1.55
1.56
1.57
8.7
1.25
1.25
1.26
1.26
1.27
1.28
1.29
8.8
1.02
1.03
1.03
1.04
1.05
1.06
1.07
8.9
0.842
0.847
0.853
0.861
0.870
0.880
0.891
9.0
0.698
0.704
0.711
0.720
0.729
0.740
0.752

 

Reference 3

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Table 6. Summary of Water Quality Guidelines for Aluminum

Water Use
maximum aluminum in
mg/L
(use instantaneous
pH value)
30-day mean aluminum in
mg/L
(use median pH value)
Drinking Water Supply
0.2 mg/L dissolved Al
None proposed
Fresh Water Aquatic Life (pH greater than or equal to 6.5)
0.1 mg/L dissolved Al
0.05 mg/L dissolved Al
Fresh Water Aquatic Life (pH less than 6.5)
dissolved Al =
exp(1.209 -2.426 K+ 0.286 K2 )
[where K = pH]
dissolved Al =
exp(1.6 -3.327 median K + 0.402 K2)
[where K = median pH]
Wildlife Water Supply
5 mg/L total Al
None proposed
Livestock Water Supply
5 mg/L total Al
None proposed
Marine and Estuarine
Aquatic Life
None proposed
None proposed
Irrigation Water Supply
5 mg/L total Al
None proposed
Recreation and Aesthetics
0.2 mg/L dissolved Al
None proposed

 

1. When detailed knowledge of the bioavailable forms of aluminum is available, the form of aluminum in the guidelines for aquatic life can be modified, as justified by the data.

2. The average is calculated from at least 5 weekly samples taken in a period of 30 days.

3. Tables 7a and 7b give maximum and 30-day average guidelines specified by the regression equations. (If the natural levels exceed the guidelines, the increase in aluminum levels above background to be allowed, if any, should be based on site-specific data).

Reference 4

 

Table 7. Examples of Freshwater Aluminum Guidelines Specified by the Regression Equations

Table 7a. Maximum Dissolved Aluminum Concentration (mg/L) at pH Less Than 6.5

pH
Maximum
pH
Maximum
pH
Maximum
pH 4.0 - 4.6
0.020 mg/L
pH 5.3
0.027 mg/L
pH 5.9
0.043 mg/L
pH 4.7 - 4.8
0.021 mg/L
pH 5.4
0.029 mg/L
pH 6.0
0.047 mg/L
pH 4.9
0.022 mg/L
pH 5.5
0.031 mg/L
pH 6.1
0.052 mg/L
pH 5.0
0.023 mg/L
pH 5.6
0.033 mg/L
pH 6.2
0.059 mg/L
pH 5.1
0.024 mg/L
pH 5.7
0.036 mg/L
pH 6.3
0.066 mg/L
pH 5.2
0.025 mg/L
pH 5.8
0.039 mg/L
pH 6.4
0.074 mg/L

 

Reference 4

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Table 7b. 30-Day Average Dissolved Aluminum Concentration (mg/L) at pH Less Than 6.5

Median pH
30-day
mean
Median pH
30-day
mean
Median pH
30-day
mean
pH 4.0 - 4.5
0.005 mg/L
pH 5.5
0.011 mg/L
pH 6.0
0.020 mg/L
pH 4.6 - 4.9
0.006 mg/L
pH 5.6
0.012 mg/L
pH 6.1
0.024 mg/L
pH 5.0 - 5.1
0.007 mg/L
pH 5.7
0.013 mg/L
pH 6.2
0.028 mg/L
pH 5.2
0.008 mg/L
pH 5.8
0.015 mg/L
pH 6.3
0.033 mg/L
pH 5.3
0.009 mg/L
pH 5.9
0.018 mg/L
pH 6.4
0.040 mg/L
pH 5.4
0.010 mg/L
—
—
—
—

 

Reference 4


Table 8. Summary of Water Quality Guidelines for Microbiological Indicators

Water Use
Escherichia
coli
Enterococci
Pseudomonas
aeruginosa
Fecal
coliforms
Raw drinking water
- no treatment
0/100 mL
0/100 mL
0/100 mL
0/100 mL
Raw drinking water
- disinfection only
less than
or equal to
10/100 mL
90th percentile
less than
or equal to
3/100 mL
90th percentile
None applicable
less than
or equal to
10/100 mL
90th percentile
Raw drinking water - partial treatment
less than
or equal to
100/100 mL
90th percentile
less than
or equal to
25/100 mL
90th percentile
None applicable
less than
or equal to
100/100 mL
90th percentile
Raw drinking water - complete treatment
None applicable
None applicable
None applicable
None applicable
Aquatic life
- shellfish harvesting
less than
or equal to
43/100 mL
90th percentile
less than
or equal to
11/100 mL
90th percentile
None applicable
less than
or equal to
43/100 mL
90th percentile
Aquatic life
- shellfish harvesting
less than
or equal to
14/100 mL
median
less than
or equal to
4/100 mL
median
None applicable
less than
or equal to
14/100 mL
median
Wildlife
None applicable
None applicable
None applicable
None applicable
Livestock - free range animals
None applicable
None applicable
None applicable
None applicable
Livestock - general livestock use
200/100 mL maximum
50/100 mL maximum
None applicable
200/100 mL maximum
Livestock - closely confined (no treatment)
0/100 mL
maximum
0/100 mL
maximum
None applicable
0/100 mL
maximum
Livestock - closely confined (disinfection only)
less than
or equal to
10/100 mL
90th percentile
less than
or equal to
3/100 mL
90th percentile
None applicable
less than
or equal to
10/100 mL
90th percentile
Livestock - closely confined (partial treatment)
less than
or equal to
100/100 mL
90th percentile
less than
or equal to
25/100 mL
90th percentile
None applicable
less than
or equal to
100/100 mL
90th percentile
Livestock - closely confined (complete treatment)
None applicable
None applicable
None applicable
None applicable
Irrigation
- crops eaten raw
less than
or equal to
77/100 mL
geometric mean
less than
or equal to
20/100 mL
geometric mean
None applicable
less than
or equal to
200/100 mL
geometric mean
Irrigation
- public access
- livestock access
less than
or equal to
385/100 mL
geometric mean
less than
or equal to
100/100 mL
geometric mean
less than
or equal to
10/100 mL
75th percentile
None applicable
Irrigation
- general irrigation
less than
or equal to
1000/100 mL
geometric mean
less than
or equal to
250/100 mL
geometric mean
None applicable
less than
or equal to
1000/100 mL
geometric mean
Recreation
- aesthetics
- non contact
None applicable
None applicable
None applicable
None applicable
Recreation
- secondary contact
- crustacean harvesting
less than
or equal to
385/100 mL
geometric mean
less than
or equal to
100/100 mL
geometric mean
less than
or equal to
10/100 mL
75th percentile
None applicable
Recreation
- primary contact
less than
or equal to
77/100 mL
geometric mean
less than
or equal to
20/100 mL
geometric mean
less than
or equal to
2/100 mL
75th percentile
less than
or equal to
200/100 mL
geometric mean
Industrial water (dairy, food processing)
- no treatment
0/100 mL
0/100 mL
None applicable
0/100 mL
Industrial water (dairy, food processing)
- disinfection only
less than
or equal to
10/100 mL
90th percentile
less than
or equal to
3/100 mL
90th percentile
None applicable
less than
or equal to
10/100 mL
90th percentile
Industrial water (dairy, food processing)
- partial treatment
less than
or equal to
100/100 mL
90th percentile
less than
or equal to
25/100 mL
90th percentile
None applicable
less than
or equal to
100/100 mL
90th percentile
Industrial water (dairy, food processing)
- complete treatment
None applicable
None applicable
None applicable
None applicable
Industrial water
- other industries
less than
or equal to
385/100 mL
geometric mean
less than
or equal to
100/100 mL
geometric mean
less than
or equal to
10/100 mL
75th percentile
None applicable


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1. Fecal coliform guidelines that presently exist will apply on an interim basis until use of the other preferred indicators is adopted.

2. For the dairy industry there is an additional guideline of less than or equal to 5/100 mL lipolytic and/or proteolytic bacteria.

3. Medians and geometric means are calculated from at least 5 samples in a 30-day period. Ten samples are required for 90th percentiles.

4. These recreation and shell harvesting guidelines are applicable to fresh and marine waters, except the E. coli guidelines that apply only to fresh water.

5. Only a few salad greens that cannot be adequately washed to remove adhering or trapped pathogens are of concern under the crops eaten raw section of irrigation. Examples include lettuce, cabbage, broccoli, cauliflower and similar crops.

6. These primary contact recreation guidelines may be subject to revision depending upon the future results of a federal/provincial study group on Canadian recreational water quality.

Reference 5


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