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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Marion Oaks Subdivision

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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
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 Result
2014-01-08ND
2014-01-08ND
2014-01-21ND
2014-01-21ND
2014-01-21ND
2014-05-19ND
2014-05-19ND
2014-05-19ND
2014-05-19ND
2014-05-19ND
2015-05-20ND
2015-05-20ND
2015-05-20ND
2015-05-20ND
2015-06-18ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2017-02-28ND
2017-02-28ND
2017-03-13ND
2017-03-13ND
2017-03-14ND
2018-05-15ND
2018-05-15ND
2018-05-15ND
2018-05-15ND
2018-05-15ND
2019-05-14ND
2019-05-14ND
2019-05-14ND
2019-05-14ND
2019-05-14ND