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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Galveston County WCID 1

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).

 

24

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.00789 ppb243ND - 0.0783 ppb
2015N/A00N/A
2016N/A00N/A
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
2014-01-304B04020-06ND
2014-01-304B04020-04ND
2014-01-304B04020-01ND
2014-01-304B04020-07ND
2014-01-304B04020-100.0783 ppb
2014-01-304B04020-080.0700 ppb
2014-01-304B04020-05ND
2014-01-304B04020-02ND
2014-01-304B04020-09ND
2014-01-304B04020-03ND
2014-04-234D29016-020.0411 ppb
2014-04-234D29016-01ND
2014-07-304H05010-04ND
2014-07-304H05010-01ND
2014-07-304H05010-02ND
2014-07-304H05010-03ND
2014-07-304H05010-07ND
2014-07-304H05010-10ND
2014-07-304H05010-08ND
2014-07-304H05010-09ND
2014-07-304H05010-05ND
2014-07-304H05010-06ND
2014-10-224J29003-01ND
2014-10-224J29003-02ND