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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

City of Orange

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.

MORE ABOUT THIS CONTAMINANT

 

110

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
2014ND200ND
2015ND160ND
2016ND190ND
2017ND240ND
2018ND130ND
2019ND180ND

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
2014-03-124417-034-1155ND
2014-03-134417-004-0900ND
2014-03-134417-005-0915ND
2014-03-134417-009-1230ND
2014-03-134417-016-0830ND
2014-03-134417-019-1130ND
2014-03-134417-020-1035ND
2014-03-134417-021-1115ND
2014-03-134417-022-1050ND
2014-03-134417-023-0930ND
2014-03-244417-003-0925ND
2014-03-244417-018-0855ND
2014-05-134417-003-0840ND
2014-05-134417-020-1150ND
2014-05-144417-008-1335ND
2014-05-144417-015-1255ND
2014-08-274417-020-0950ND
2014-09-244417-003-0905ND
2014-10-134417-003-0820ND
2014-10-144417-020-0935ND
2015-02-254417-005-0840ND
2015-02-254417-008-1235ND
2015-02-254417-009-1210ND
2015-02-254417-016-0925ND
2015-02-254417-018-0955ND
2015-02-254417-019-1145ND
2015-02-254417-021-1110ND
2015-02-254417-022-1050ND
2015-02-254417-023-0855ND
2015-03-254417-017-1110ND
2015-04-284417-003-0835ND
2015-04-284417-008-1105ND
2015-04-284417-015-1025ND
2015-04-284417-016-0930ND
2015-06-174417-034-1100ND
2015-09-284417-020-1000ND
2016-01-194417-016-0910ND
2016-01-194417-021-0945ND
2016-01-264417-009-0925ND
2016-01-264417-017-1145ND
2016-01-264417-018-1030ND
2016-01-264417-019-1220ND
2016-01-264417-023-1055ND
2016-04-144417-003-1150ND
2016-04-144417-008-1005ND
2016-04-144417-015-1110ND
2016-04-144417-020-1040ND
2016-04-254417-016-1045ND
2016-04-254417-018-1020ND
2016-04-254417-018-1030ND
2016-04-254417-023-1115ND
2016-04-254417-034-1000ND
2016-07-274417-049-0850ND
2016-10-064417-049-1030ND
2016-12-134417-022-1015ND
2017-01-114417-009-1130ND
2017-01-114417-017-1145ND
2017-01-114417-018-0840ND
2017-01-114417-019-1110ND
2017-01-114417-021-1050ND
2017-01-114417-022-1020ND
2017-01-114417-023-1000ND
2017-01-114417-049-0920ND
2017-01-164417-003-1120ND
2017-01-164417-008-1050ND
2017-01-164417-020-1005ND
2017-01-314417-021-1050ND
2017-02-144417-019-1130ND
2017-02-144417-021-1110ND
2017-04-054417-049-0950ND
2017-04-254417-008-0920ND
2017-04-254417-016-0840ND
2017-04-254417-022-1000ND
2017-05-184417-016-0855ND
2017-05-184417-022-0950ND
2017-05-184417-034-0820ND
2017-05-234417-008-1005ND
2017-05-304417-034-1110ND
2017-05-304417-034-1125ND
2018-03-064417-008-1245ND
2018-03-064417-009-1220ND
2018-03-064417-017-1115ND
2018-03-064417-018-0840ND
2018-03-064417-019-1135ND
2018-03-064417-020-1015ND
2018-03-064417-021-1055ND
2018-03-064417-022-1040ND
2018-03-064417-023-0950ND
2018-05-094417-009-1310ND
2018-05-094417-016-1005ND
2018-05-094417-034-0910ND
2018-05-094417-049-1050ND
2019-01-144417-008-1035ND
2019-01-144417-009-0950ND
2019-01-144417-019-0915ND
2019-01-144417-023-0840ND
2019-04-224417-016-0910ND
2019-04-224417-021-1010ND
2019-04-224417-034-1200ND
2019-04-224417-049-0935ND
2019-04-234417-017-1135ND
2019-05-154417-017-1030ND
2019-05-154417-021-1115ND
2019-05-154417-022-1145ND
2019-06-184417-020-0940ND
2019-09-054417-021-1210ND
2019-09-054417-021-1215ND
2019-11-054417-018-1135ND
2019-11-054417-021-1030ND
2019-11-054417-021-1035ND