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EWG's Tap Water Database

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Chromium (total)

Washington

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011ND20ND
2012N/A00N/A
2013N/A00N/A
2014ND20ND
2015ND60ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)100 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2011-04-041040134-01ND
2011-04-041040134-02ND
2014-04-234043511-01ND
2014-04-234043511-02ND
2015-03-11848091-13662ND
2015-03-11848087-13662ND
2015-03-11848089-13662ND
2015-09-22885083-15025ND
2015-09-22885085-15025ND
2015-09-22885087-15025ND