Know Your Environment. Protect Your Health.

Nitrite

Carlisle Water Trmt Plt

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
2020ND40ND
2021ND30ND
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
2018-02-132295111001ND
2018-05-082313953001ND
2018-07-172327012001ND
2018-10-232346132001ND
2019-02-123016269009ND
2019-04-033026115001ND
2019-07-303048639001ND
2019-10-163064495001ND
2020-01-2221617326.00ND
2020-04-1422157275.00ND
2020-07-0122551367.00ND
2020-10-0623128856.00ND
2021-01-1923835775.00ND
2021-04-1324379069.00ND
2021-08-1025163048.00ND
2022-02-1526236877.00ND
2022-07-1227177075.00ND
2023-12-0530368694.00ND