Know Your Environment. Protect Your Health.

Nitrite

Middletown 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.

 

14

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
2023ND40ND

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
2018-03-01NOX 200489001ND
2018-04-16NOX 200492152ND
2019-05-13NOX 200531892ND
2019-05-21NOX 200533082ND
2020-05-06NOX 200574724ND
2020-05-14NOX 200575834ND
2021-03-30NOX 200611335ND
2021-03-30NOX 200611336ND
2022-05-11N300182524 300182530ND
2022-05-11N300182526 300182543ND
2023-06-23N300370712 300370714ND
2023-06-23N300370718 300370720ND
2023-06-23N300370724 300370726ND
2023-06-23N300370731 300370733ND