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National Drinking Water Database

Nitrate & nitrite in New York

Nitrate and nitrite enter water from fertilizer runoff, leaching from septic tanks, and erosion of natural deposits.

The Most Polluted Communities in New York

489 water utilities reported detecting Nitrate & nitrite in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Nitrate & nitrite level

RankSystem Population Served Positive test results of total reported tests Average Level
1Cohocton Village
Cohocton, NY
8598 of 88.29 ppm
(<0.01 to 13 ppm)
2Clove Branch Apartments
Mount Kisco, NY
3431 of 317.72 ppm
(5.87 to 9.33 ppm)
3Letchworth Pines M H P
Hilton, NY
425 of 57.24 ppm
(6.33 to 8.36 ppm)
4Village Park Apartments
Pleasant Valley, NY
80019 of 196.68 ppm
(5 to 8.75 ppm)
5Bedford Consolidated W.D.
Bedford Hills, NY
7,00034 of 346.66 ppm
(1.39 to 12 ppm)
6Carmel WD 9
Mahopac, NY
4401 of 16.65 ppm
(6.65 ppm)
7Pine Village Estates Mhp (Gu)
Blossvale, NY
722 of 26.62 ppm
(4.8 to 8.43 ppm)
8Showboat Mobile Home Park
Caledonia, NY
661 of 16.36 ppm
(6.36 ppm)
9Snell Farm Childrens Center
Bath, NY
481 of 15.9 ppm
(5.9 ppm)
10East Side Spring
East Syracuse,, NY
523 of 35.83 ppm
(5.5 to 6.5 ppm)

Health Based Limits for Nitrate & nitrite

Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.10 ppm
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.10 ppm
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.10 ppm

Violation Summary for Nitrate & nitrite in New York

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in New York since 2004

Violation TypeNumber of Violations
Failure to monitor regularly4