Know Your Environment. Protect Your Health.

Nitrite

Windham Water Works

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND30ND
2020ND10ND
2021ND20ND
2022ND20ND
2023ND30ND

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date Lab ID Result
2018-10-16CB72346ND
2019-05-14CD12367ND
2019-05-21CD18365RND
2019-05-21CD18365ND
2020-09-02CG66837ND
2021-11-02CJ70153ND
2021-11-02CJ70156ND
2022-11-21CM89462ND
2022-11-30CM93814ND
2023-10-31CP37959ND
2023-10-31CP37958ND
2023-11-07CP42173ND