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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Lca Upper Milford Division

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-02-0414012362-01ND
2014-04-0114032276-01ND
2014-07-0114062813-01ND
2014-10-0114092114-01ND
2015-02-0212437351ND
2015-05-0612791173ND
2015-07-0613051276ND
2015-10-0713427620ND
2016-02-0113791080ND
2016-04-0414149753ND
2016-07-0514621612ND
2016-10-0414960698ND
2017-02-0215561138ND
2017-05-0116145575ND
2017-08-0916615587ND
2017-11-0717065071ND
2018-02-058020553-01ND
2018-05-088050910-01ND
2018-08-018074063-01ND
2018-11-068111953-02ND
2019-01-078124132-01ND
2019-05-069045489-01ND
2019-08-069076339-01ND
2019-11-049105276-01ND