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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Aqua Pa Hatboro

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND60ND
2016ND50ND
2017ND50ND
2018ND50ND
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
2014-04-08AE28690ND
2014-04-23AE29871ND
2014-04-23AE29876ND
2014-04-23AE29870ND
2014-05-23AE33428ND
2014-09-16AE48091ND
2015-02-0312400742ND
2015-02-0312400740ND
2015-02-0312400738ND
2015-02-0312400737ND
2015-02-0312400734ND
2015-11-2313513602ND
2016-01-1913751853ND
2016-01-1913751855ND
2016-01-1913751857ND
2016-01-1913751859ND
2016-01-1913751861ND
2017-06-2016256694ND
2017-06-2016256696ND
2017-06-2016256698ND
2017-06-2016256700ND
2017-10-1316879046ND
2018-01-16AF73308ND
2018-01-16AF73309ND
2018-01-16AF73310ND
2018-03-14AF77912ND
2018-03-14AF77913ND
2019-03-13AG10399ND
2019-03-13AG10400ND
2019-03-13AG10406ND
2019-03-13AG10402ND
2019-04-09AG13239ND