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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Cherokee MD

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.

MORE ABOUT THIS CONTAMINANT

 

53

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0250 ppb182ND - 0.230 ppb
2015ND100ND
2016ND80ND
2017ND60ND
20180.333 ppb61ND - 2.00 ppb
20192.20 ppb54ND - 4.00 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
2014-01-16ND
2014-04-14ND
2014-06-24ND
2014-06-240.220 ppb
2014-06-24ND
2014-06-24ND
2014-06-24ND
2014-07-07ND
2014-08-040.230 ppb
2014-09-25ND
2014-09-25ND
2014-09-25ND
2014-09-25ND
2014-10-08ND
2014-12-03ND
2014-12-03ND
2014-12-03ND
2014-12-03ND
2015-03-03ND
2015-03-03ND
2015-03-11ND
2015-03-24ND
2015-04-08ND
2015-07-15ND
2015-07-22ND
2015-08-25ND
2015-11-19ND
2015-12-07ND
2016-03-10ND
2016-03-16ND
2016-04-26ND
2016-04-27ND
2016-07-19ND
2016-08-02ND
2016-12-13ND
2016-12-13ND
2017-02-06ND
2017-02-06ND
2017-05-09ND
2017-05-09ND
2017-08-01ND
2017-10-12ND
2018-02-01ND
2018-04-04ND
2018-04-17ND
2018-05-16ND
2018-08-02ND
2018-11-062.00 ppb
2019-02-054.00 ppb
2019-05-083.00 ppb
2019-08-072.00 ppb
2019-11-042.00 ppb
2019-11-05ND