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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Granada Mobile Home Court

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND40ND
2017ND50ND
2018ND50ND
2019ND60ND

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
2014-12-03S588950ND
2015-08-05S642041ND
2015-10-05S642828ND
2016-03-31S669327ND
2016-04-25S665407ND
2016-09-07S709882ND
2016-10-05S693864ND
2017-01-10S714256ND
2017-04-03S723602ND
2017-08-28S741151ND
2017-09-18S756963ND
2017-12-05S781141ND
2018-02-20S783845ND
2018-05-25S778837ND
2018-08-02S792592ND
2018-08-24S782177ND
2018-11-09S808193ND
2019-01-10S856149ND
2019-01-18S856446ND
2019-04-01S872335ND
2019-07-01S888150ND
2019-08-07S870966ND
2019-10-07S920469ND