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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Missouri American St. Louis County & St. Charles County

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.

 

95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND200ND
20131.24 ppb4540ND - 2.60 ppb
20140.509 ppb155ND - 2.03 ppb
2015ND50ND
2016ND50ND
2017ND50ND

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
2012-01-0515587201ND
2012-01-0515595301ND
2012-01-0515825301ND
2012-01-0515827701ND
2012-01-0515828801ND
2012-04-1017408201ND
2012-04-1017406401ND
2012-04-1016420401ND
2012-04-1616113701ND
2012-04-1616115601ND
2012-07-0517406501ND
2012-07-0517408301ND
2012-07-0519180601ND
2012-07-1117131701ND
2012-07-1716992501ND
2012-10-0919180701ND
2012-10-0919892701ND
2012-10-0919893601ND
2012-10-0919894801ND
2012-10-0919895401ND
2013-02-05210201011.30 ppb
2013-02-05210199011.40 ppb
2013-02-05210183011.30 ppb
2013-02-05210181011.40 ppb
2013-02-06210891011.30 ppb
2013-02-06210195011.50 ppb
2013-02-06210193011.40 ppb
2013-02-06210174011.20 ppb
2013-02-06210170012.60 ppb
2013-02-06210164011.20 ppb
2013-04-0221490701ND
2013-04-0221492501ND
2013-04-0321493401ND
2013-04-0321491601ND
2013-04-2221833601ND
2013-05-09218012010.900 ppb
2013-05-09218010011.000 ppb
2013-05-09218006010.900 ppb
2013-05-09218004010.900 ppb
2013-05-09217994011.10 ppb
2013-05-09217992011.10 ppb
2013-05-09217985010.900 ppb
2013-05-09217981010.900 ppb
2013-05-09217975011.000 ppb
2013-05-09217970011.000 ppb
2013-08-08231738011.50 ppb
2013-08-08231740011.50 ppb
2013-08-08231744011.60 ppb
2013-08-08231746011.40 ppb
2013-08-08231728011.60 ppb
2013-08-08231726011.60 ppb
2013-08-08231719011.50 ppb
2013-08-08231715011.60 ppb
2013-08-08231709011.60 ppb
2013-08-08231705011.50 ppb
2013-11-05239347011.60 ppb
2013-11-05239345011.70 ppb
2013-11-05239335011.70 ppb
2013-11-05239333011.50 ppb
2013-11-05239322012.00 ppb
2013-11-05239316011.60 ppb
2013-11-05239311011.50 ppb
2013-11-06239353011.30 ppb
2013-11-06239351011.40 ppb
2013-11-06239326011.60 ppb
2014-04-1525143201ND
2014-04-1525144101ND
2014-04-1525144401ND
2014-04-1625142301ND
2014-04-1625141401ND
2014-07-23AC293652.03 ppb
2014-07-23AC293641.36 ppb
2014-07-23AC293631.39 ppb
2014-07-23AC293621.33 ppb
2014-07-23AC293611.53 ppb
2014-07-2326417901ND
2014-07-2326417801ND
2014-07-2326417701ND
2014-07-2326417601ND
2014-07-2326417501ND
2015-04-2228627701ND
2015-04-2228627401ND
2015-04-2228626501ND
2015-04-2228624701ND
2015-04-2228625601ND
2016-04-0531777301ND
2016-04-0531776301ND
2016-04-2031778301ND
2016-04-2031779301ND
2016-04-2031779601ND
2017-04-1135123001ND
2017-04-1135121701ND
2017-04-1135122701ND
2017-04-1935119701ND
2017-04-1935120701ND