Know Your Environment. Protect Your Health.

Nitrite

Cromwell Fire District Water Department

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
2018ND20ND
2019ND20ND
2020ND10ND
2021ND40ND
2022ND20ND
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
2018-03-14CA01949NOXND
2018-04-10CA16967NOXND
2019-04-09CC91352ND
2019-04-09CC91353ND
2020-04-21CF76344ND
2021-04-13CH97961ND
2021-04-13CH97962ND
2021-06-08CI49703ND
2021-06-08CI49704ND
2022-04-12CL05934ND
2022-04-12CL05935ND
2023-04-11CN80741ND