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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Golden State Water Company - Barstow

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND150ND
2015N/A00N/A
2016N/A00N/A
2017ND220ND
2018N/A00N/A
2019N/A00N/A

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
2014-02-112706-034-0749ND
2014-02-112706-033-0716ND
2014-02-112706-019-0801ND
2014-02-112706-017-0732ND
2014-02-112706-014-0700ND
2014-02-122706-008-0804ND
2014-02-122706-009-0747ND
2014-02-122706-011-0730ND
2014-02-122706-012-0717ND
2014-02-122706-013-0843ND
2014-02-182706-003-0750ND
2014-02-182706-002-0817ND
2014-02-182706-001-0841ND
2014-02-182706-020-0936ND
2014-02-182706-021-0911ND
2017-02-219590-017-1231ND
2017-02-219590-018-1426ND
2017-02-219590-014-1326ND
2017-02-219590-033-1509ND
2017-02-249590-013-0921ND
2017-02-249590-012-1029ND
2017-02-249590-011-1056ND
2017-02-249590-009-1158ND
2017-02-249590-008-1130ND
2017-03-039590-021-1040ND
2017-03-039590-001-1115ND
2017-03-039590-005-1245ND
2017-03-039590-003-1226ND
2017-03-039590-002-1150ND
2017-09-279590-034-1109ND
2017-11-219590-019-1141ND
2017-12-059590-021-1011ND
2017-12-059590-020-1231ND
2017-12-059590-020-1213ND
2017-12-059590-003-1106ND
2017-12-059590-002-1053ND
2017-12-059590-001-1046ND