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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Yorba Linda Water 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.

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111

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
2014ND250ND
2015ND140ND
2016ND200ND
2017ND170ND
2018ND150ND
2019ND200ND

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
2014-01-084417-001-0905ND
2014-01-084417-001-0915ND
2014-01-084417-002-0830ND
2014-01-084417-004-0855ND
2014-01-084417-006-1005ND
2014-01-084417-007-0950ND
2014-01-084417-008-0920ND
2014-01-084417-011-0935ND
2014-01-084417-020-0815ND
2014-01-084417-023-0800ND
2014-04-024417-001-0800ND
2014-04-024417-001-0805ND
2014-04-024417-002-0855ND
2014-04-024417-007-0815ND
2014-04-024417-008-0840ND
2014-04-024417-011-0945ND
2014-07-094417-001-0805ND
2014-07-094417-003-0915ND
2014-07-094417-006-0835ND
2014-07-094417-008-0845ND
2014-08-214417-002-1105ND
2014-09-034417-007-1130ND
2014-10-084417-001-0815ND
2014-10-084417-002-0920ND
2014-10-084417-008-0900ND
2015-02-114417-006-0850ND
2015-02-194417-004-0855ND
2015-02-194417-020-0840ND
2015-02-194417-023-0925ND
2015-03-114417-011-1125ND
2015-03-304417-007-1005ND
2015-04-014417-004-0855ND
2015-04-014417-008-0950ND
2015-06-034417-007-0805ND
2015-07-084417-001-0915ND
2015-07-084417-002-0835ND
2015-07-084417-003-0820ND
2015-07-084417-007-0925ND
2015-10-074417-007-0925ND
2016-01-144417-004-0900ND
2016-01-144417-006-0830ND
2016-01-144417-007-1005ND
2016-01-144417-008-0845ND
2016-01-144417-011-1025ND
2016-01-144417-020-0815ND
2016-01-144417-023-0800ND
2016-04-134417-001-1105ND
2016-04-134417-004-1125ND
2016-04-134417-008-1230ND
2016-06-154417-001-0810ND
2016-06-154417-002-0955ND
2016-06-154417-003-0905ND
2016-06-154417-008-0935ND
2016-07-214417-007-0905ND
2016-07-214417-008-1050ND
2016-07-214417-023-0850ND
2016-09-074417-001-0900ND
2016-11-024417-007-0845ND
2016-11-024417-008-0925ND
2017-01-184417-006-0850ND
2017-01-184417-007-0815ND
2017-01-184417-011-0830ND
2017-01-184417-020-0905ND
2017-01-184417-023-0800ND
2017-03-013761-024-1020ND
2017-04-124417-003-0920ND
2017-04-124417-004-0905ND
2017-05-244417-008-0820ND
2017-06-274417-001-0925ND
2017-06-274417-007-0900ND
2017-07-124417-007-0820ND
2017-07-124417-023-0805ND
2017-07-124417-024-0845ND
2017-10-044417-002-1045ND
2017-10-044417-007-0825ND
2017-10-044417-024-0910ND
2018-01-174417-006-1040ND
2018-01-174417-011-1025ND
2018-01-174417-020-1100ND
2018-01-174417-023-1000ND
2018-01-244417-024-0800ND
2018-04-254417-001-1020ND
2018-04-254417-002-1110ND
2018-04-254417-003-0815ND
2018-04-254417-004-0800ND
2018-04-254417-007-0920ND
2018-04-254417-008-0835ND
2018-04-254417-024-0940ND
2018-07-113761-003-1007ND
2018-07-114417-007-0850ND
2018-10-104417-007-1115ND
2019-03-134417-001-0945ND
2019-03-134417-002-0840ND
2019-03-134417-006-0810ND
2019-03-134417-007-1130ND
2019-03-134417-008-0900ND
2019-03-134417-020-0920ND
2019-03-134417-024-1000ND
2019-03-214417-023-0820ND
2019-03-274417-011-0900ND
2019-04-044417-003-1120ND
2019-04-044417-007-1155ND
2019-05-304417-004-1000ND
2019-06-184417-004-0900ND
2019-06-184417-004-0910ND
2019-08-204417-001-0920ND
2019-08-204417-004-1045ND
2019-08-204417-007-0850ND
2019-08-204417-023-0825ND
2019-10-234417-004-1105ND
2019-10-234417-007-0825ND