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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Pinnacle Rehabilitation & Health Center

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND20ND
2016ND10ND
2017ND10ND
2018ND10ND
2019ND10ND

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
2014-03-10S543081ND
2014-09-15S589716ND
2014-12-10S553941ND
2015-03-04S536757ND
2015-12-29S629030ND
2016-06-24S637173ND
2017-10-19S769254ND
2018-10-24S808680ND
2019-09-17S870617ND