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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Greenville City PWS

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.252 ppb32ND - 0.411 ppb
20140.210 ppb75ND - 0.349 ppb
2015ND10ND
2016ND10ND
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
2012-02-109500108250ND
2013-03-139500095715ND
2013-12-02760903-104140.411 ppb
2013-12-16763227-105150.346 ppb
2014-02-13A140175990ND
2014-03-17775942-109870.286 ppb
2014-03-17775940-109870.208 ppb
2014-06-09795959-116120.332 ppb
2014-06-09795957-11601ND
2014-10-23828337-128470.349 ppb
2014-10-23828339-128470.292 ppb
2015-01-15A150262975ND
2016-01-07A160357702ND
2017-01-06A170462451ND