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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of Hurst

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.

MORE ABOUT THIS CONTAMINANT

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND20ND
20140.0456 ppb183ND - 0.300 ppb
2015N/A00N/A
20161.42 ppb330.760 ppb - 2.40 ppb
20171.60 ppb21ND - 3.20 ppb
2018N/A00N/A
2019ND30ND

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
2013-10-172915333ND
2013-10-172915346ND
2014-01-0829550730.300 ppb
2014-01-082955046ND
2014-04-10Q1411477013ND
2014-04-10Q1411477001ND
2014-04-10Q1411477003ND
2014-04-10Q14114770090.226 ppb
2014-04-10Q1411477007ND
2014-04-10Q1411477011ND
2014-04-10Q1411477015ND
2014-04-10Q1411477005ND
2014-07-08Q1426129003ND
2014-07-08Q1426129001ND
2014-10-14Q1452234003ND
2014-10-14Q1452234001ND
2014-10-14Q1452234011ND
2014-10-14Q1452234009ND
2014-10-14Q14522340050.295 ppb
2014-10-14Q1452234007ND
2016-07-11Q16277460122.40 ppb
2016-07-11Q16277460111.10 ppb
2016-07-11Q16277460100.760 ppb
2017-01-04Q1700326004ND
2017-04-05Q17141050063.20 ppb
2019-01-16Q1902266006ND
2019-01-16Q1902266005ND
2019-04-17Q1915359006ND