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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Cole County PWSD 1

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
20121.77 ppb65ND - 2.52 ppb
2013ND70ND
2014ND70ND
20151.20 ppb661.03 ppb - 1.63 ppb
2016N/A00N/A
2017N/A00N/A

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
2012-02-16AB659672.52 ppb
2012-02-16AB659681.91 ppb
2012-02-16AB659701.67 ppb
2012-02-16AB659712.48 ppb
2012-02-16AB659722.06 ppb
2012-03-26AB70041ND
2013-06-04AB97388ND
2013-06-04AB97386ND
2013-06-04AB97384ND
2013-06-04AB97382ND
2013-06-04AB97380ND
2013-06-04AB97378ND
2013-06-04AB97376ND
2014-02-25AC14981ND
2014-02-25AC14979ND
2014-02-25AC14977ND
2014-02-25AC14975ND
2014-02-25AC14973ND
2014-02-25AC14971ND
2014-02-25AC14969ND
2015-02-18AC422341.05 ppb
2015-02-18AC422351.63 ppb
2015-02-18AC422361.03 ppb
2015-02-18AC422381.18 ppb
2015-02-18AC422331.28 ppb
2015-02-18AC422371.05 ppb