Know Your Environment. Protect Your Health.

Nitrite

City of Caldwell

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND130ND
2020N/A00N/A
2021N/A00N/A
2022ND10ND
2023N/A00N/A

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
2019-08-06I1938597ND
2019-08-06I1938591ND
2019-08-06I1938595ND
2019-08-06I1938599ND
2019-08-06I1938601ND
2019-08-06I1938593ND
2019-08-06I1938594ND
2019-08-19I1941176ND
2019-08-19I1941181ND
2019-08-19I1941183ND
2019-08-19I1941171ND
2019-08-19I1941172ND
2019-08-19I1941174ND
2022-06-29I2231081ND