Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrite

Cedarpines Park Mutual Water Company

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND70ND
2016N/A00N/A
2017ND40ND
2018ND100ND
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
2014-03-033761-027-0830ND
2014-03-033761-003-0955ND
2014-03-033761-009-1005ND
2014-03-033761-010-0945ND
2014-03-033761-012-0935ND
2014-03-033761-013-0950ND
2014-03-033761-015-0915ND
2014-03-033761-016-0925ND
2014-03-033761-017-0935ND
2014-03-033761-018-1005ND
2014-03-033761-020-0820ND
2014-03-033761-022-0933ND
2014-03-033761-026-0955ND
2014-06-053761-008-0700ND
2014-09-023761-018-0930ND
2014-09-023761-008-0914ND
2015-02-023761-023-1220ND
2015-02-023761-027-1221ND
2015-02-023761-003-1300ND
2015-02-023761-020-1220ND
2015-02-023761-019-1220ND
2015-02-023761-018-1145ND
2015-03-053761-003-0730ND
2017-01-103761-003-1050ND
2017-01-103761-018-1020ND
2017-01-103761-008-1030ND
2017-07-253761-008-0800ND
2018-03-203761-013-0940ND
2018-03-203761-012-0850ND
2018-03-203761-020-1100ND
2018-03-203761-015-0835ND
2018-03-203761-016-0835ND
2018-03-203761-018-0950ND
2018-03-203761-026-0940ND
2018-03-273761-009-0950ND
2018-03-273761-007-0945ND
2018-03-273761-003-1015ND
2019-03-193761-008-1035ND