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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Gander Woods Pump District

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
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND140ND
2019ND130ND

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
2014-03-27S479161ND
2015-02-10S588779ND
2016-02-22S659167ND
2017-04-05S730775ND
2018-01-29S757464ND
2018-02-12S757769ND
2018-03-12S757789ND
2018-04-17S759335ND
2018-05-24S757794ND
2018-06-01S811935ND
2018-06-07S759480ND
2018-07-19S757802ND
2018-08-22S759542ND
2018-09-27S759578ND
2018-10-01S759584ND
2018-10-10S759589ND
2018-11-13S757811ND
2018-12-13S759670ND
2019-01-03S759674ND
2019-02-14S759627ND
2019-03-20S759683ND
2019-03-26S817083ND
2019-04-11S759691ND
2019-05-14S759700ND
2019-06-10S759286ND
2019-07-25S759730ND
2019-08-13S759742ND
2019-09-25S759709ND
2019-10-15S759712ND
2019-11-06S759355ND
2019-12-10S919989ND