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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

California American Water Company - Coronado

NOTE: California American Water Company - Coronado purchases water from City of San Diego which is required to test for chromium (hexavalent). Sample information shown below was taken by City of San Diego.

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).

 

60

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND100ND
20130.0550 ppb880.0400 ppb - 0.0700 ppb
20140.0463 ppb86ND - 0.0900 ppb
2015N/A00N/A
2016ND20ND
2017ND30ND

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

NOTE: California American Water Company - Coronado purchases water from City of San Diego which is required to test for chromium (hexavalent). Sample information shown below was taken by City of San Diego.

Date Lab ID Result
2012-02-069437-006-0000ND
2012-02-069437-001-0000ND
2012-02-069437-010-0000ND
2012-05-079437-010-0000ND
2012-05-079437-006-0000ND
2012-05-079437-001-0000ND
2012-08-069437-001-0000ND
2012-08-079437-006-0000ND
2012-08-079437-010-0000ND
2012-11-289437-010-0000ND
2013-02-049437-010-0000ND
2013-02-049437-001-0000ND
2013-02-049437-006-0000ND
2013-05-069437-010-0000ND
2013-05-069437-001-0000ND
2013-05-299437-006-0000ND
2013-08-059437-006-0000ND
2013-08-059437-001-0000ND
2013-08-059437-010-0000ND
2013-08-191308683-001B0.0900 ppb
2013-08-191308684-001B0.110 ppb
2013-08-201308735-001B0.170 ppb
2013-08-201308736-001B0.1000 ppb
2013-08-211308768-001B0.0700 ppb
2013-08-211308767-001B0.0900 ppb
2013-11-049437-001-0000ND
2013-11-049437-010-0000ND
2013-11-049437-006-0000ND
2013-11-121311405-001B0.0440 ppb
2013-11-121311403-001B0.0500 ppb
2013-11-121311404-001B0.110 ppb
2013-11-121311402-001B0.0300 ppb
2013-11-131311446-001BND
2013-11-131311448-001BND
2014-02-039437-006-0000ND
2014-02-039437-001-0000ND
2014-02-039437-010-0000ND
2014-02-101402418-001B0.360 ppb
2014-02-101402420-001B0.0760 ppb
2014-02-101402419-001B0.0820 ppb
2014-02-101402421-001B0.0950 ppb
2014-02-111402514-001B0.0500 ppb
2014-02-111402513-001B0.0870 ppb
2014-05-059437-010-0000ND
2014-05-059437-006-0000ND
2014-05-059437-001-0000ND
2014-05-121405469-001B0.0600 ppb
2014-05-121405511-001B0.0890 ppb
2014-05-121405512-001B0.0570 ppb
2014-05-121405468-001B0.0820 ppb
2014-05-131405606-001B0.0340 ppb
2014-05-131405607-001BND
2014-08-049437-001-0000ND
2014-08-049437-010-0000ND
2014-08-049437-006-0000ND
2016-07-209437-001-0000ND
2016-07-209437-006-0000ND
2017-07-129437-006-0000ND
2017-07-129437-001-0000ND
2017-07-129437-010-0000ND