Know Your Environment. Protect Your Health.

Nitrite

Farmington 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.

 

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
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-01-23180124-043NIND
2018-01-23180124-054NIND
2019-01-22190123-092NIND
2019-01-22190123-093NIND
2020-01-13200114-027NIND
2020-01-13200114-030NIND
2021-01-20NI-210121-055ND
2021-01-20NI-210121-056ND
2022-01-03NI-220104-020ND
2022-01-03NI-220104-021ND
2023-01-11NI-230112-012ND
2023-01-11NI-230112-013ND