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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Santa Clarita Water Division

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
2016ND60ND
2017ND50ND
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
2014-05-229590-014-0920ND
2014-05-229590-012-0950ND
2014-05-229590-008-1020ND
2014-05-229590-006-1200ND
2014-11-109590-019-1110ND
2015-05-219590-040-0915ND
2015-05-219590-009-0840ND
2015-05-269590-015-1030ND
2015-07-069590-002-1015ND
2015-07-069590-806-0950ND
2016-01-299590-013-1110ND
2016-05-189590-002-0830ND
2016-05-189590-039-0850ND
2016-05-189590-025-1000ND
2016-05-189590-016-1030ND
2016-05-189590-007-0940ND
2017-05-189590-012-1030ND
2017-05-189590-006-1305ND
2017-05-189590-014-0915ND
2017-05-189590-008-1120ND
2017-05-189590-019-0935ND
2018-04-119590-002-0720ND
2018-04-119590-006-0800ND
2018-04-119590-040-0815ND
2018-04-119590-007-0730ND
2018-04-119590-039-0915ND
2018-04-119590-025-1045ND
2018-04-119590-019-1050ND
2018-04-119590-008-1200ND
2018-04-119590-015-1435ND
2018-04-119590-012-1005ND
2018-04-119590-009-1135ND
2018-04-119590-014-1000ND
2018-04-119590-016-1220ND
2018-04-119590-013-0910ND
2019-04-109590-039-1100ND
2019-04-109590-009-0830ND
2019-04-109590-002-0845ND
2019-04-109590-012-0950ND
2019-04-109590-006-0830ND
2019-04-109590-040-1020ND
2019-04-109590-013-0930ND
2019-04-109590-025-0930ND
2019-04-109590-014-0945ND
2019-04-109590-008-0900ND
2019-04-109590-019-0900ND
2019-04-109590-016-0845ND
2019-08-079590-007-0930ND