Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chromium (total)

Athens - Clarke County Water System

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
2014ND10ND
20150.0332 ppb91ND - 0.299 ppb
2016ND10ND
2017ND10ND
2018ND10ND
2019ND10ND

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
2014-02-17AI28217ND
2015-01-06837930-13200ND
2015-01-06837932-13200ND
2015-01-13AI62785ND
2015-04-22855976-140080.299 ppb
2015-04-22855978-14008ND
2015-07-29874343-14756ND
2015-07-29874341-14756ND
2015-10-12888498-15173ND
2015-10-12888496-15173ND
2016-01-12AJ04140ND
2017-01-18AJ39658ND
2018-01-16AJ76760ND
2019-01-08AK09075ND