Know Your Environment. Protect Your Health.

Nitrite

Stw Property Duplexes

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND40ND
20210.000800 ppm51ND - 0.00400 ppm
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 Result
2018-11-30ND
2018-11-30ND
2019-02-12ND
2019-05-02ND
2019-08-29ND
2019-12-05ND
2020-02-20ND
2020-06-25ND
2020-08-20ND
2020-11-03ND
2021-03-160.00400 ppm
2021-04-20ND
2021-06-22ND
2021-09-27ND
2021-11-04ND
2022-02-01ND
2022-04-19ND
2022-08-02ND
2022-10-18ND
2023-02-14ND