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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Garden Grove

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.

 

57

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
20130.896 ppb3022ND - 1.80 ppb
20140.0556 ppb91ND - 0.500 ppb
2015ND40ND
2016N/A00N/A
2017ND100ND

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
2012-01-114417-020-0900ND
2012-01-114417-061-0940ND
2012-04-044417-018-1105ND
2012-04-044417-016-1135ND
2013-03-043010062821ND
2013-03-053010062816ND
2013-03-0730100629961.30 ppb
2013-05-1330100628051.50 ppb
2013-05-1330100628021.40 ppb
2013-05-1330100628201.60 ppb
2013-05-1330100629951.10 ppb
2013-05-1430100628071.10 ppb
2013-05-1430100628031.60 ppb
2013-05-1430100628130.440 ppb
2013-05-1530100628091.60 ppb
2013-05-1530100628151.10 ppb
2013-05-1530100628110.930 ppb
2013-06-103010062821-2ND
2013-06-103010062816-2ND
2013-06-113010062996-2ND
2013-09-033010062821-3ND
2013-09-033010062816-3ND
2013-09-043010062996-31.20 ppb
2013-11-133010062806-21.70 ppb
2013-11-133010062820-21.30 ppb
2013-11-133010062995-21.20 ppb
2013-11-133010062809-21.20 ppb
2013-11-133010062802-20.900 ppb
2013-11-133010062805-21.80 ppb
2013-11-133010062813-20.500 ppb
2013-11-133010062811-21.10 ppb
2013-11-133010062815-21.20 ppb
2013-12-093010062816-4ND
2013-12-103010062996-41.10 ppb
2014-01-084417-014-0740ND
2014-01-084417-019-0810ND
2014-01-084417-012-0955ND
2014-01-084417-011-1100ND
2014-01-084417-009-0835ND
2014-02-053010062821-4A0.500 ppb
2014-04-024417-013-1440ND
2014-04-024417-039-1015ND
2014-04-024417-006-1400ND
2015-03-044417-061-0835ND
2015-03-044417-020-0700ND
2015-04-014417-018-1100ND
2015-04-014417-016-1140ND
2017-02-014417-009-0820ND
2017-02-014417-019-0715ND
2017-02-014417-012-0915ND
2017-02-014417-014-0935ND
2017-03-014417-011-1020ND
2017-03-014417-018-1050ND
2017-04-264417-013-1200ND
2017-04-264417-011-1020ND
2017-04-264417-039-0955ND
2017-04-264417-016-1120ND