Know Your Environment. Protect Your Health.

Nitrite

Villa Margaret

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND30ND
20210.00926 ppm52ND - 0.0261 ppm
2022ND10ND
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
2018-02-27ND
2018-05-30ND
2018-08-21ND
2018-11-28ND
2019-02-26ND
2019-05-30ND
2019-07-18ND
2019-10-24ND
2020-02-19ND
2020-04-15ND
2020-11-04ND
2021-02-23ND
2021-03-30ND
2021-07-070.0202 ppm
2021-09-23ND
2021-12-020.0261 ppm
2022-02-17ND
2023-07-13ND