Know Your Environment. Protect Your Health.

Nitrite

Cws-split Mountain Water System

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
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
2018-01-23CA1500407_005_005-201801231010ND
2018-01-23CA1500407_006_006-201801230950ND
2018-11-28CA1500407_002_002-201811281115ND
2019-01-15CA1500407_005_005-201901151150ND
2019-01-15CA1500407_006_006-201901151132ND
2019-05-13CA1500407_002_002-201905130958ND
2020-01-22CA1500407_006_006-202001221438ND
2020-01-22CA1500407_005_005-202001221450ND
2020-02-11CA1500407_007_007-202002111247ND
2021-01-26CA1500407_006_006-202101261336ND
2021-01-26CA1500407_005_005-202101261344ND
2021-01-26CA1500407_006_006-202101261336ND
2022-02-24CA1500407_006_006-202202240859ND
2022-02-24CA1500407_005_005-202202240827ND
2023-01-26CA1500407_006_006-202301260934ND
2023-01-26CA1500407_005_005-202301260926ND
2023-02-23CA1500407_007_007-202302231300ND