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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Belforest Water System

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.

MORE ABOUT THIS CONTAMINANT

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND70ND
2016N/A00N/A
2017N/A00N/A
2018ND90ND
2019ND90ND

ppm = parts per million

State and national drinking water standards and health guidelines

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
2014-01-16AA88276ND
2014-01-16AA88277ND
2014-01-16AA88278ND
2014-04-15AA89073ND
2014-04-15AA89072ND
2014-07-17AA90614ND
2014-07-17AA90613ND
2014-10-16AA92203ND
2014-10-16AA92204ND
2015-01-13AB01986ND
2015-01-13AB01985ND
2015-01-13AB01984ND
2015-04-16AB03412ND
2015-04-16AB03411ND
2015-10-15AB08444ND
2015-10-15AB08445ND
2018-01-11AB25024ND
2018-01-11AB25025ND
2018-06-14AB27736ND
2018-06-14AB27735ND
2018-07-12AB28497ND
2018-07-12AB28496ND
2018-10-11AB30925ND
2018-10-11AB30924ND
2018-10-11AB30923ND
2019-01-15AB32573ND
2019-01-15AB32574ND
2019-01-15AB32575ND
2019-06-14AB35889ND
2019-06-14AB35890ND
2019-07-18AB36916ND
2019-07-18AB36915ND
2019-12-09AB40544ND
2019-12-09AB40543ND