New York Codes, Rules and Regulations
Title 10 - DEPARTMENT OF HEALTH
Chapter - APPENDICES
Appendix 75-C - INDIVIDUAL ONSITE WATER SUPPLY SYSTEMS - STATEWIDE WATER QUALITY STANDARDS
TABLE 1
The standards in Table 1 shall not be exceeded:
|
Contaminant |
Standard (1) |
|
Coliform Bacteria |
Any positive result (2) |
|
Lead |
0.015 mg/l |
|
Nitrates |
10 mg/l as Nitrogen |
|
Nitrites |
1 mg/l as Nitrogen |
|
Turbidity |
5 NTU (3) |
|
Arsenic |
0.010 mg/l |
(2) A "positive" result means that coliform bacteria are present; a "negative" result means that coliform bacteria are absent or are not present.
(3) NTU means Nephelometric Turbidity Units.
TABLE 2
Exceeding the following standards may necessitate (1) installation and maintenance of water treatment devices, or (2) limited daily consumption of water by certain persons:
|
Contaminant |
Standard (1) |
|
Iron |
0.3 mg/l (2) |
|
Manganese |
0.3 mg/l (2) |
|
Iron plus manganese |
0.5 mg/l (2) |
|
Hardness |
150 mg/l as CaCO3 (2) |
|
Alkalinity |
100 mg/l as CaCO3 (2) |
|
pH |
6.5 - 8.5 (3) |
|
Sodium |
No designated limit (4) |
(2) If standards are exceeded options for treatment should be evaluated.
(3) If pH values are outside of this range (i.e., less than 6.5 or greater than 8.5) options for treatment should be evaluated.
(4) Water containing more than 20 mg/l of sodium should not be used for drinking by people on severely restricted sodium diets. Water containing more than 270 mg/l of sodium should not be used for drinking by people on moderately restricted sodium diets.
Statutory Authority: Public Health Law, 201(1)(1)
