Know Your Environment. Protect Your Health.

Nitrite

Weiler-martin Tracts Water Association

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020N/A00N/A
2021ND40ND
2022ND40ND
2023ND10ND

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
2018-01-22ND
2018-06-21ND
2018-11-26ND
2019-02-21ND
2019-05-29ND
2019-09-19ND
2021-02-244078064ND
2021-04-274109012ND
2021-09-274175382ND
2021-12-164245692ND
2022-03-164256467ND
2022-06-274296685ND
2022-09-154336657ND
2022-12-144385108ND
2023-12-074556913ND