Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrite

Long Neck Water Company

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
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
2014-02-11S478622ND
2014-02-11S478621ND
2014-04-16S478623ND
2014-06-03S478631ND
2014-06-03S478630ND
2015-02-05S580389ND
2015-02-05S580388ND
2015-06-04S580401ND
2015-06-04S580400ND
2016-02-15S580416ND
2016-02-15S580415ND
2016-12-13S683152ND
2016-12-13S683153ND
2017-02-07S478660ND
2017-02-07S478659ND
2017-06-05S458662ND
2017-06-05S458661ND
2018-02-05S458665ND
2018-02-05S458664ND
2018-06-11S473548ND
2018-06-11S473547ND
2019-02-05S478664ND
2019-02-05S458569ND
2019-06-03S473539ND
2019-06-03S473538ND
2019-12-09S927448ND