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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of West Columbia

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
2013ND40ND
20140.0414 ppb141ND - 0.580 ppb
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2013-10-29201310310104AMND
2013-10-29201310310123AMND
2013-10-29201310310125AMND
2013-10-29201310310127AMND
2014-01-22AD34778ND
2014-01-22AD34777ND
2014-01-27201401310072AMND
2014-01-27201401310081AMND
2014-01-27201401310078AMND
2014-01-27201401310090AMND
2014-04-28201405010406AMND
2014-04-28201405010501AMND
2014-04-28201405010478AMND
2014-04-28201405010427AMND
2014-07-22201407240425AMND
2014-07-22201407240342AMND
2014-07-22201407240347AMND
2014-07-22201407240502AM0.580 ppb
2015-01-21AD50494ND
2015-01-21AD50493ND
2016-02-03AD70089ND
2016-02-03AD70088ND
2017-01-18AD88449ND
2017-03-07AD90716ND
2018-02-14AE07713ND
2018-02-15AE07832ND
2019-01-08AE23569ND
2019-02-11AE25245ND