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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

Golden State Water Company (GSWC) - Southwest

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

 

69

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.0271 ppb3714ND - 0.200 ppb
20140.00674 ppb193ND - 0.0460 ppb
2015N/A00N/A
2016N/A00N/A
2017ND130ND
2018N/A00N/A
2019N/A00N/A

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
2013-06-10201306100486AMND
2013-06-10201306100490AM0.0440 ppb
2013-06-10201306100488AMND
2013-06-10201306100484AMND
2013-06-10201306100478AM0.0940 ppb
2013-06-10201306100482AMND
2013-06-10201306100480AMND
2013-06-17201306180016AM0.0870 ppb
2013-06-17201306180028AMND
2013-06-17201306180026AMND
2013-06-17201306180030AMND
2013-06-17201306180018AM0.0500 ppb
2013-06-17201306180014AMND
2013-06-17201306180022AMND
2013-06-17201306180024AMND
2013-06-17201306180020AM0.0480 ppb
2013-09-18201309190354AM0.0940 ppb
2013-09-19201309200191AM0.0760 ppb
2013-09-19201309200181AM0.0890 ppb
2013-09-19201309200145AM0.0330 ppb
2013-09-19201309200175AM0.0600 ppb
2013-12-09201312100166AM0.200 ppb
2013-12-10201312110534AMND
2013-12-10201312110536AMND
2013-12-10201312110531AMND
2013-12-10201312110518AMND
2013-12-11201312120537AMND
2013-12-11201312120511AMND
2013-12-11201312120539AM0.0420 ppb
2013-12-16201312160218AM0.0400 ppb
2013-12-16201312160220AMND
2013-12-16201312160216AM0.0450 ppb
2013-12-16201312160214AMND
2013-12-16201312160212AMND
2013-12-17201312170714AMND
2013-12-17201312170716AMND
2013-12-18201312180743AMND
2014-03-10201403100301AM0.0380 ppb
2014-03-11201403110802AMND
2014-03-11201403110800AMND
2014-03-13201403130695AM0.0440 ppb
2014-03-13201403130693AM0.0460 ppb
2014-09-229590-036-0845ND
2014-09-229590-011-1055ND
2014-09-229590-010-1415ND
2014-09-229590-005-1245ND
2014-09-229590-037-1400ND
2014-09-229590-070-1255ND
2014-09-229590-038-1405ND
2014-09-229590-039-0917ND
2014-09-229590-043-0748ND
2014-09-229590-045-0923ND
2014-09-229590-061-0905ND
2014-09-229590-062-0859ND
2014-09-229590-064-1005ND
2014-12-169590-069-1103ND
2017-02-239590-073-0924ND
2017-03-239590-011-1240ND
2017-03-299590-045-1145ND
2017-03-299590-039-1235ND
2017-03-299590-070-1307ND
2017-03-299590-005-1345ND
2017-03-299590-010-1050ND
2017-03-309590-043-0920ND
2017-03-309590-038-0725ND
2017-03-309590-037-0653ND
2017-03-309590-069-0845ND
2017-04-139590-064-0754ND
2017-05-249590-036-0755ND