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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

City of Orange

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

 

61

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.0769 ppb1615ND - 0.290 ppb
2014ND150ND
2015ND10ND
20160.200 ppb71ND - 1.40 ppb
20170.0923 ppb131ND - 1.20 ppb
2018ND30ND
20190.220 ppb61ND - 1.32 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-03-0430100278260.110 ppb
2013-03-0530100278270.120 ppb
2013-03-0630100278240.0300 ppb
2013-03-0630100279970.290 ppb
2013-06-103010027826-20.0800 ppb
2013-06-103010027827-20.0800 ppb
2013-06-113010027824-20.0500 ppb
2013-06-113010027997-20.0900 ppb
2013-09-033010027827-30.0600 ppb
2013-09-033010027826-30.0600 ppb
2013-09-043010027997-30.0600 ppb
2013-09-043010027824-30.0400 ppb
2013-12-093010027827-40.0300 ppb
2013-12-093010027824-4ND
2013-12-093010027826-40.0300 ppb
2013-12-103010027997-40.1000 ppb
2014-05-134417-003-0840ND
2014-05-134417-023-1055ND
2014-05-134417-021-1230ND
2014-05-134417-020-1150ND
2014-05-134417-019-1250ND
2014-05-134417-005-0930ND
2014-05-134417-004-1020ND
2014-05-144417-022-1200ND
2014-05-144417-018-1020ND
2014-05-144417-016-1105ND
2014-05-144417-015-1255ND
2014-05-144417-008-1335ND
2014-06-254417-009-1000ND
2014-10-134417-022-1140ND
2014-10-144417-005-0915ND
2015-03-254417-017-1110ND
2016-01-264417-019-1220ND
2016-04-144417-020-1040ND
2016-04-254417-023-1115ND
2016-07-274417-034-09451.40 ppb
2016-07-274417-049-0850ND
2016-10-064417-049-1030ND
2016-12-134417-022-1015ND
2017-01-114417-049-0920ND
2017-01-114417-009-1130ND
2017-01-114417-021-1050ND
2017-01-114417-018-0840ND
2017-02-144417-019-1130ND
2017-04-054417-049-0950ND
2017-04-254417-022-1000ND
2017-04-254417-016-0840ND
2017-04-254417-008-0920ND
2017-05-184417-022-0950ND
2017-05-184417-016-0855ND
2017-05-184417-034-08201.20 ppb
2017-05-234417-008-1005ND
2018-03-064417-017-1115ND
2018-03-064417-009-1220ND
2018-05-094417-016-1005ND
2019-01-144417-019-0920ND
2019-01-144417-023-0845ND
2019-04-224417-021-1015ND
2019-04-224417-049-0940ND
2019-04-224417-034-12051.32 ppb
2019-06-184417-020-0945ND