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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Abby Water LLC

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
2014ND40ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND20ND
2019ND50ND

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
2014-03-11BG18022NOXND
2014-03-24140368-NNOXND
2014-06-09BG54760NOXND
2014-12-15BH53605NOXND
2015-03-25BH87791NOXND
2016-01-21BK56251NOXND
2017-02-23BX74933NOXND
2018-09-05CB25567ND
2018-12-12CC13237ND
2019-03-14CC68089ND
2019-05-22CD19677ND
2019-08-21CD90162ND
2019-10-18CE43975ND
2019-12-16CE89027ND