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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Aqua Water Supply Corporation

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
2014ND30ND
2015ND90ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND120ND

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
2014-02-05AC41413ND
2014-04-14AC50247ND
2014-08-13AC63314ND
2015-02-09AC79587ND
2015-02-09AC79586ND
2015-02-09AC79589ND
2015-02-09AC79588ND
2015-02-10AC79825ND
2015-02-10AC79826ND
2015-02-10AC79822ND
2015-02-10AC79823ND
2015-02-10AC79824ND
2019-05-15AE66346ND
2019-05-15AE66347ND
2019-05-15AE66357ND
2019-05-15AE66350ND
2019-05-15AE66352ND
2019-05-15AE66348ND
2019-05-15AE66353ND
2019-05-15AE66355ND
2019-05-15AE66349ND
2019-05-15AE66354ND
2019-05-15AE66351ND
2019-05-15AE66356ND