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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Aqua Pa Perkiomen Township

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
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
2014-09-16AE48223ND
2014-09-16AE48222ND
2014-09-16AE48221ND
2014-09-16AE48227ND
2014-09-16AE48220ND
2015-02-0312404169ND
2015-02-0312404170ND
2015-02-0312404172ND
2015-02-0312404174ND
2015-02-0312404177ND
2016-01-2013755416ND
2016-01-2013755420ND
2016-01-2013755418ND
2016-01-2013755412ND
2016-01-2013755414ND
2017-02-2115658682ND
2017-06-2116260394ND
2017-06-2116260396ND
2017-06-2116260398ND
2017-12-2717165043ND
2018-01-17AF73409ND
2018-01-17AF73398ND
2018-01-17AF73400ND
2018-01-17AF73397ND
2018-07-19AF90332ND
2019-04-24AG14547ND
2019-04-24AG14545ND
2019-04-24AG14549ND
2019-04-24AG14552ND
2019-05-08AG17044ND