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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Parsons

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
20131.40 ppb111.40 ppb
2014ND70ND
2015ND30ND
2016ND10ND
20171.50 ppb111.50 ppb

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
2012-05-08578571WSND
2013-05-20596302WS1.40 ppb
2014-05-05110008ND
2014-06-093040924ND
2014-06-093040928ND
2014-09-033096379ND
2014-09-033096375ND
2014-12-163156973ND
2014-12-163156968ND
2015-03-043200004ND
2015-03-043200013ND
2015-05-11330829ND
2016-05-03537431ND
2017-05-097589081.50 ppb