Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chromium (total)

City of Hewitt

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.

 

26

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
2013ND90ND
2014ND130ND
2015N/A00N/A
2016ND30ND
2017ND10ND

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
2013-10-09Q1308728013ND
2013-10-09Q1308728009ND
2013-10-09Q1308728001ND
2013-10-09Q1308728007ND
2013-10-09Q1308728015ND
2013-10-09Q1308728005ND
2013-10-09Q1308728003ND
2013-10-09Q1308728011ND
2013-10-09Q1308728017ND
2014-01-14Q1400599001ND
2014-01-14Q1400599003ND
2014-04-17Q1412218017ND
2014-04-17Q1412218015ND
2014-04-17Q1412218011ND
2014-04-17Q1412218009ND
2014-04-17Q1412218013ND
2014-04-17Q1412218001ND
2014-04-17Q1412218005ND
2014-04-17Q1412218003ND
2014-04-17Q1412218007ND
2014-07-29Q1431973001ND
2014-07-29Q1431973003ND
2016-01-20AD18850ND
2016-01-20AD18845ND
2016-04-06AD31996ND
2017-04-03AD77994ND