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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Lca Heidelberg Heights Div

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

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND70ND
2016ND80ND
2017ND70ND
2018ND60ND
2019ND60ND

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
2014-02-1814012375-01ND
2014-04-1514032288-01ND
2014-04-1514032292-01ND
2014-04-1514032295-01ND
2014-04-2914042782-01ND
2014-04-2914042782-02ND
2014-07-1414062816-01ND
2014-10-1314092129-01ND
2015-02-1812435457ND
2015-05-2012789162ND
2015-05-2012789163ND
2015-05-2012789161ND
2015-07-1313049604ND
2015-10-1413425844ND
2015-10-1413425841ND
2016-02-1513904367ND
2016-04-1914297172ND
2016-04-1914147787ND
2016-04-1914147786ND
2016-04-1914297134ND
2016-05-1614297132ND
2016-07-1914619422ND
2016-10-2615120147ND
2017-01-1715559232ND
2017-04-1815985076ND
2017-04-1815985099ND
2017-04-1815985053ND
2017-07-1716458499ND
2017-07-1716458497ND
2017-11-2117063111ND
2018-02-208010429-01ND
2018-04-188040485-01ND
2018-04-188040485-02ND
2018-04-188040485-03ND
2018-07-178070982-01ND
2018-10-168101481-01ND
2019-01-239014520-01ND
2019-04-159034287-01ND
2019-04-159034287-02ND
2019-04-179044457-01ND
2019-07-159065366-01ND
2019-10-149094570-01ND