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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Irvine Ranch Water District

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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153

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.235 ppb2213ND - 0.600 ppb
20140.129 ppb4617ND - 0.700 ppb
2015ND180ND
2016ND140ND
2017ND250ND
2018ND110ND
2019ND170ND

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
2013-03-043010092817ND
2013-03-0530100929920.500 ppb
2013-03-0530100928160.600 ppb
2013-03-1830100929930.200 ppb
2013-06-103010092817-2ND
2013-06-103010092816-2ND
2013-06-113010092992-20.500 ppb
2013-06-113010092993-2ND
2013-09-033010092817-3ND
2013-09-033010092816-30.300 ppb
2013-09-043010092992-30.400 ppb
2013-09-043010092993-30.300 ppb
2013-10-213J24056-03AND
2013-10-213J24056-13A0.470 ppb
2013-10-213J24056-07A0.460 ppb
2013-10-213J24056-01A0.430 ppb
2013-10-213J24056-11AND
2013-10-213J24056-05AND
2013-10-213J24056-09AND
2013-12-093010092816-40.300 ppb
2013-12-103010092992-40.300 ppb
2013-12-103010092993-40.400 ppb
2014-01-073010092802-10.500 ppb
2014-01-073010092818-1ND
2014-01-073010092995-10.300 ppb
2014-01-144417-066-0930ND
2014-01-144417-067-1010ND
2014-01-274A29064-01AND
2014-01-284A29064-05AND
2014-01-284A29064-03A0.300 ppb
2014-01-284A29064-07AND
2014-01-284A29064-11A0.380 ppb
2014-01-284A29064-09AND
2014-01-294A29064-13AND
2014-02-053010092809-1ND
2014-02-053010092817-4A0.500 ppb
2014-02-053010092996-1ND
2014-02-114417-007-1215ND
2014-02-114417-056-1305ND
2014-02-264417-058-1020ND
2014-03-104417-055-0850ND
2014-03-114417-020-0930ND
2014-03-184417-014-0845ND
2014-04-154D17070-01A0.280 ppb
2014-04-154D17070-03AND
2014-04-154D17070-07A0.280 ppb
2014-04-154D17070-09A0.320 ppb
2014-04-154D17070-05AND
2014-04-164D17070-13AND
2014-04-164D17070-11AND
2014-06-103010092802-20.700 ppb
2014-06-103010092818-2ND
2014-06-103010092995-20.200 ppb
2014-06-174417-018-0900ND
2014-07-093010092809-2ND
2014-07-093010092996-2ND
2014-07-174317-075-1332ND
2014-07-294G31058-07A0.220 ppb
2014-07-294G31058-01A0.200 ppb
2014-07-294G31058-05A0.450 ppb
2014-07-294G31058-09A0.320 ppb
2014-07-294G31058-03A0.220 ppb
2014-07-294G31058-11A0.200 ppb
2014-07-304G31058-13A0.580 ppb
2014-08-124317-060-1430ND
2014-08-274317-063-0817ND
2014-10-074417-078-1300ND
2014-10-234317-069-1305ND
2015-01-124417-078-1120ND
2015-01-274417-003-1015ND
2015-01-274417-016-0930ND
2015-02-094417-004-0940ND
2015-02-234417-019-0905ND
2015-03-184417-005-0950ND
2015-03-254417-009-1010ND
2015-04-074417-017-1000ND
2015-04-084417-078-1000ND
2015-04-234317-063-0835ND
2015-04-294417-011-0800ND
2015-05-204417-077-0750ND
2015-07-134417-077-1100ND
2015-07-144417-078-0900ND
2015-08-124317-060-1315ND
2015-08-194317-075-0948ND
2015-08-204417-010-0840ND
2015-10-054417-077-0930ND
2016-01-124417-077-1030ND
2016-01-124417-077-1050ND
2016-01-124417-077-1105ND
2016-01-284417-072-0925ND
2016-03-084417-078-1000ND
2016-03-084417-078-1010ND
2016-04-064417-006-0920ND
2016-05-314417-023-0905ND
2016-05-314417-024-0835ND
2016-06-154317-063-0945ND
2016-06-234417-008-0835ND
2016-07-264417-010-0900ND
2016-08-114317-060-1358ND
2016-09-224317-075-1129ND
2017-01-174417-011-0835ND
2017-01-174417-016-0805ND
2017-01-194417-058-0940ND
2017-01-194417-067-0830ND
2017-01-234417-005-1055ND
2017-01-234417-014-1015ND
2017-02-144417-004-0820ND
2017-02-144417-020-1340ND
2017-02-144417-066-0925ND
2017-02-284317-085-1334ND
2017-03-014417-020-0755ND
2017-03-144417-007-1010ND
2017-03-144417-056-1210ND
2017-03-214317-063-1418ND
2017-03-214317-064-1437ND
2017-03-234417-055-1000ND
2017-03-294317-069-1032ND
2017-03-304417-055-1405ND
2017-03-304417-056-1340ND
2017-04-264317-085-1040ND
2017-08-014417-018-0830ND
2017-08-234317-060-1022ND
2017-08-234317-075-0911ND
2017-11-144417-015-0925ND
2017-12-044417-009-0820ND
2018-02-064417-006-0800ND
2018-02-064417-017-0720ND
2018-02-084417-019-0840ND
2018-02-144317-085-1413ND
2018-02-204417-003-1220ND
2018-02-274317-069-1110ND
2018-03-054317-060-1433ND
2018-03-084317-075-1136ND
2018-03-204317-063-0820ND
2018-04-174317-085-1141ND
2018-04-304417-078-0925ND
2019-02-134317-060-1135ND
2019-02-214417-072-1030ND
2019-02-214417-077-0940ND
2019-02-274317-085-0941ND
2019-03-144317-063-0935ND
2019-03-144317-064-0943ND
2019-03-204317-075-1300ND
2019-04-154417-017-1120ND
2019-04-154417-023-1310ND
2019-04-154417-024-1230ND
2019-04-164417-008-0805ND
2019-05-234417-077-0945ND
2019-05-234417-077-0950ND
2019-05-284417-017-0750ND
2019-05-284417-017-0800ND
2019-06-274417-010-0745ND
2019-07-174317-085-1413ND