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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Randall-bold Water Treatment Plant

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

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND120ND
2016ND20ND
2017ND10ND
2018ND20ND
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
2014-01-162473-002-0930ND
2014-02-112473-002-1230ND
2014-03-112473-002-0855ND
2014-04-152473-002-1140ND
2014-05-132473-002-1045ND
2014-06-102473-002-1315ND
2014-07-089590-002-1410ND
2014-07-082473-002-1410ND
2014-07-152473-002-0935ND
2014-08-122473-002-1109ND
2014-09-092473-002-0929ND
2014-10-142473-002-1022ND
2014-12-092473-002-0925ND
2015-01-132473-002-0936ND
2015-02-102473-002-1055ND
2015-03-102473-002-1010ND
2015-04-142473-002-0925ND
2015-05-122473-002-0950ND
2015-06-092473-002-0911ND
2015-07-072473-002-1410ND
2015-07-142473-002-0940ND
2015-08-112473-002-1105ND
2015-09-152473-002-1120ND
2015-10-132473-002-0900ND
2015-12-222473-002-0900ND
2016-07-059590-002-1400ND
2016-07-052473-002-0900ND
2017-07-119590-002-1410ND
2018-07-171644-002-1000ND
2018-07-171644-002-1001ND
2019-07-091644-002-0945ND