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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

East Cherry Creek Valley Water and Sanitation District

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.

 

58

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.929 ppb148ND - 4.00 ppb
2013N/A00N/A
20140.232 ppb4215ND - 1.000 ppb
2015ND10ND
2016N/A00N/A
20172.00 ppb112.00 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 Result
2012-04-12ND
2012-04-12ND
2012-04-13ND
2012-04-19ND
2012-04-231.000 ppb
2012-04-261.000 ppb
2012-04-261.000 ppb
2012-05-04ND
2012-05-101.000 ppb
2012-05-17ND
2012-05-172.00 ppb
2012-05-252.00 ppb
2012-07-134.00 ppb
2012-10-251.000 ppb
2014-02-10ND
2014-02-10ND
2014-02-10ND
2014-02-10ND
2014-02-11ND
2014-02-24ND
2014-02-24ND
2014-02-240.340 ppb
2014-02-24ND
2014-02-24ND
2014-02-24ND
2014-02-24ND
2014-02-24ND
2014-02-24ND
2014-02-26ND
2014-02-26ND
2014-05-12ND
2014-05-12ND
2014-05-191.000 ppb
2014-08-081.000 ppb
2014-08-12ND
2014-08-131.000 ppb
2014-08-141.000 ppb
2014-08-141.000 ppb
2014-08-191.000 ppb
2014-08-191.000 ppb
2014-08-200.240 ppb
2014-08-200.260 ppb
2014-08-200.230 ppb
2014-08-20ND
2014-08-200.210 ppb
2014-08-211.000 ppb
2014-08-25ND
2014-08-25ND
2014-08-25ND
2014-08-25ND
2014-08-26ND
2014-08-260.220 ppb
2014-10-06ND
2014-11-10ND
2014-11-19ND
2014-11-240.240 ppb
2015-02-03ND
2017-08-152.00 ppb