Table 3.17 Summary of water quality criteria for microbiological indicators [37]
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
(continued)
3 Surface Water Quality and Analysis
105