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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Galveston County WCID 1

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND30ND
2014ND240ND
2015N/A00N/A
2016ND30ND
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2013-02-05AC09644ND
2013-02-05AC09646ND
2013-02-05AC09643ND
2014-01-30Q1402958007ND
2014-01-30Q1402958019ND
2014-01-30Q1402958013ND
2014-01-30Q1402958017ND
2014-01-30Q1402958015ND
2014-01-30Q1402958009ND
2014-01-30Q1402958005ND
2014-01-30Q1402958001ND
2014-01-30Q1402958011ND
2014-01-30Q1402958003ND
2014-04-23Q1412817001ND
2014-04-23Q1412817003ND
2014-07-30Q1432033005ND
2014-07-30Q1432033003ND
2014-07-30Q1432033001ND
2014-07-30Q1432033007ND
2014-07-30Q1432033019ND
2014-07-30Q1432033017ND
2014-07-30Q1432033015ND
2014-07-30Q1432033013ND
2014-07-30Q1432033009ND
2014-07-30Q1432033011ND
2014-10-22Q1453353003ND
2014-10-22Q1453353001ND
2016-01-26AD19988ND
2016-01-26AD19987ND
2016-06-27AD41840ND