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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Greenville Water System

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
20140.0400 ppb183ND - 0.300 ppb
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-01-03AD00645ND
2012-01-03AD00647ND
2013-01-10AD18209ND
2013-01-10AD18219ND
2014-01-13201401150361AMND
2014-01-13201401150570AMND
2014-01-13201401150562AMND
2014-01-13201401150374AMND
2014-01-27AD34962ND
2014-01-27AD34958ND
2014-04-15201404170319AMND
2014-04-15201404170278AMND
2014-04-15201404170438AMND
2014-04-15201404170302AMND
2014-07-14201407160598AMND
2014-07-14201407160555AMND
2014-07-14201407160628AMND
2014-07-14201407160641AMND
2014-10-13201410150202AM0.220 ppb
2014-10-13201410150130AM0.300 ppb
2014-10-13201410150258AM0.200 ppb
2014-10-13201410150270AMND
2015-02-03AD51022ND
2015-02-03AD51025ND
2016-01-27AD69773ND
2016-01-27AD69775ND
2017-02-07AD89487ND
2017-02-07AD89489ND