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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Yuima Municipal Water District Ida

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND30ND
2016ND130ND
2017ND60ND
2018ND30ND
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
2014-01-142706-043-0915ND
2014-04-082706-044-0900ND
2014-05-132706-037-1000ND
2014-07-082706-020-1120ND
2014-08-122706-045-1050ND
2014-10-142706-045-0830ND
2014-10-162706-002-0850ND
2015-03-102706-004-1130ND
2015-07-142706-042-0900ND
2015-07-142706-040-0906ND
2016-03-102706-048-1130ND
2016-04-122706-032-0825ND
2016-06-142706-029-0750ND
2016-06-142706-041-0848ND
2016-06-142706-033-0930ND
2016-06-142706-028-0810ND
2016-06-142706-006-0930ND
2016-06-142706-005-0845ND
2016-07-122706-031-0945ND
2016-07-122706-012-0830ND
2016-07-122706-007-1002ND
2016-08-092706-047-0820ND
2016-10-142706-011-1030ND
2017-01-102706-044-1120ND
2017-01-102706-043-1115ND
2017-04-112706-046-0835ND
2017-04-112706-045-0850ND
2017-05-092706-037-1050ND
2017-07-112706-020-0745ND
2018-07-102706-004-1105ND
2018-07-102706-042-0920ND
2018-07-102706-040-0930ND
2019-03-122706-048-1045ND
2019-04-092706-032-0900ND
2019-06-112706-041-0800ND
2019-06-112706-033-0845ND
2019-06-112706-029-1215ND
2019-06-112706-028-1200ND
2019-06-112706-005-1200ND
2019-07-092706-047-1130ND
2019-07-092706-031-0730ND
2019-07-092706-012-0845ND
2019-07-092706-007-0800ND
2019-07-092706-006-0800ND
2019-10-082706-011-0820ND