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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Cal-am Water Company - Duarte

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).

 

25

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.175 ppb179ND - 0.650 ppb
2014N/A00N/A
2015N/A00N/A
2016ND80ND
2017N/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
2013-03-06211268010.120 ppb
2013-03-06211271010.190 ppb
2013-03-06211270010.170 ppb
2013-03-12211269010.650 ppb
2013-03-12211263010.540 ppb
2013-03-12211264010.460 ppb
2013-03-13212699010.190 ppb
2013-03-13211265010.340 ppb
2013-03-13211272010.310 ppb
2013-09-109588-019-1050ND
2013-09-129590-008-1425ND
2013-09-129590-010-1450ND
2013-09-129590-009-1355ND
2013-09-129590-007-1330ND
2013-09-129590-004-1415ND
2013-09-129590-003-1340ND
2013-09-129590-002-1440ND
2016-09-079588-010-1315ND
2016-09-079588-009-1400ND
2016-09-079588-008-1345ND
2016-09-079588-007-1245ND
2016-09-079588-003-1305ND
2016-12-059588-002-1145ND
2016-12-059590-019-1105ND
2016-12-059590-002-1145ND