Know Your Environment. Protect Your Health.

Nitrite

Westchester County WD #2

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-05-117051461001 NITND
2019-05-297091340001 NITND
2020-05-0870130562 NITND
2020-11-12AW21843-NITND
2021-06-0470175718001-NITND
2021-07-27AX14931-NITND
2022-05-1370214739001-NITND
2022-09-21AY17010-NITND
2023-05-0570255449001-NITND
2023-07-27AZ13680-NITND