Know Your Environment. Protect Your Health.

Nitrite

East Montana Water System

NOTE: East Montana Water System purchases water from El Paso Water Utilities which is required to test for nitrite. Sample information shown below was taken by El Paso Water Utilities.

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.

 

20

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
20190.0270 ppm52ND - 0.0926 ppm
2020ND10ND
2021N/A00N/A
2022ND30ND
2023ND50ND

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

NOTE: East Montana Water System purchases water from El Paso Water Utilities which is required to test for nitrite. Sample information shown below was taken by El Paso Water Utilities.

Date Lab ID Result
2019-04-23Q1916065001ND
2019-05-29Q1929690001ND
2019-05-30Q19303710010.0926 ppm
2019-06-26Q19403990190.0422 ppm
2019-11-14Q1976997005ND
2020-01-27Q2003022044ND
2020-01-27Q2003022045ND
2020-01-27Q2003022046ND
2020-01-28Q2003297018ND
2020-02-20Q2006544012ND
2020-03-03Q2007947004ND
2020-05-21Q2020341011ND
2022-07-05Q2218639003ND
2022-07-05Q2218639020ND
2022-07-14Q2220321004ND
2023-10-19Q2344941012ND
2023-10-19Q2344941014ND
2023-10-31Q2346599015ND
2023-11-01Q2346856008ND
2023-11-01Q2346856012ND