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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Citizens Water of Westfield, 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.

MORE ABOUT THIS CONTAMINANT

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND80ND
2016ND50ND
2017ND60ND
2018ND60ND
2019ND30ND

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
2014-05-13683178NND
2014-05-13683174NND
2014-05-13683176NND
2014-08-12696462-01NND
2014-08-12696465-03NND
2014-11-11709898NND
2014-11-11709900NND
2015-02-10722485-01NND
2015-02-10722487-03NND
2015-08-111500547-01NND
2015-08-111500547-02NND
2015-09-22150077005NND
2015-11-10150102303NND
2015-11-10150102301NND
2015-11-10150102304NND
2016-05-1016066606NND
2016-05-1016066604NND
2016-05-1016066602NND
2016-08-0916121405NND
2016-08-0916121406NND
2017-05-0917070711NND
2017-05-0917070713NND
2017-05-0917070715NND
2017-08-15171309611NND
2017-08-1517130613NND
2017-08-1517130612NND
2018-05-1518071801NND
2018-05-1518071802NND
2018-06-1218087906NND
2018-08-1418127401NND
2018-08-1418127402NND
2018-08-1418127403NND
2019-05-1419092608NND
2019-05-1419092609NND
2019-05-1419092610NND