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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of Orange

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

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83

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.0133 ppb151ND - 0.200 ppb
20140.310 ppb3018ND - 1.20 ppb
2015ND80ND
2016ND100ND
2017ND110ND
2018ND30ND
2019ND60ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2013-03-043010027826ND
2013-03-053010027827ND
2013-03-063010027824ND
2013-03-0630100279970.200 ppb
2013-06-103010027826-2ND
2013-06-103010027827-2ND
2013-06-113010027824-2ND
2013-06-113010027997-2ND
2013-09-033010027826-3ND
2013-09-033010027827-3ND
2013-09-043010027824-3ND
2013-09-043010027997-3ND
2013-12-093010027824-4ND
2013-12-093010027827-4ND
2013-12-103010027997-4ND
2014-02-053010027826-4A0.500 ppb
2014-03-124417-034-1155ND
2014-03-244417-018-0855ND
2014-05-133010027817-10.500 ppb
2014-05-133010027804-10.400 ppb
2014-05-133010027805-10.300 ppb
2014-05-133010027816-10.500 ppb
2014-05-133010027998-1ND
2014-05-133010027803-1ND
2014-05-143010027825-11.10 ppb
2014-05-143010027812-1ND
2014-05-143010027809-1ND
2014-05-143010027806-10.700 ppb
2014-05-143010027802-1ND
2014-05-143010027813-1ND
2014-05-143010027808-10.500 ppb
2014-10-13141003710.300 ppb
2014-10-13141003721.20 ppb
2014-10-13141003740.600 ppb
2014-10-13141003700.300 ppb
2014-10-13141003760.300 ppb
2014-10-13141003750.800 ppb
2014-10-13141003730.200 ppb
2014-10-1414100425ND
2014-10-1414100428ND
2014-10-14141004270.400 ppb
2014-10-14141004260.300 ppb
2014-10-14141004290.400 ppb
2014-10-1414100431ND
2014-10-1414100430ND
2015-02-254417-021-1110ND
2015-02-254417-008-1235ND
2015-02-254417-009-1210ND
2015-02-254417-005-0840ND
2015-03-254417-017-1110ND
2015-04-284417-016-0930ND
2015-04-284417-015-1025ND
2015-04-284417-003-0835ND
2016-01-194417-016-0920ND
2016-01-194417-016-0910ND
2016-01-264417-019-1220ND
2016-03-024417-016-1200ND
2016-03-024417-016-1145ND
2016-04-144417-020-1040ND
2016-04-254417-023-1115ND
2016-07-274417-049-0850ND
2016-10-064417-049-1030ND
2016-12-134417-022-1015ND
2017-01-114417-018-0840ND
2017-01-114417-049-0920ND
2017-01-314417-021-1050ND
2017-02-144417-019-1130ND
2017-02-144417-021-1110ND
2017-04-054417-049-0950ND
2017-04-254417-022-1000ND
2017-04-254417-008-0920ND
2017-05-184417-022-0950ND
2017-05-184417-034-0820ND
2017-05-234417-008-1005ND
2018-03-064417-017-1115ND
2018-03-064417-009-1220ND
2018-05-094417-016-1005ND
2019-01-144417-019-0915ND
2019-01-144417-023-0840ND
2019-04-224417-034-1200ND
2019-04-224417-049-0935ND
2019-04-224417-021-1010ND
2019-06-184417-020-0940ND