Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chromium (hexavalent)

Covington County Water Authority

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

24

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.460 ppb125ND - 2.00 ppb
20150.350 ppb124ND - 2.20 ppb
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-12-1135167711001AMND
2014-12-1135167711005AMND
2014-12-1135167711003AM0.0820 ppb
2014-12-1635168260001AMND
2014-12-1635168224001AMND
2014-12-1635168260005AM2.00 ppb
2014-12-1635168260007AM1.90 ppb
2014-12-1635168260003AMND
2014-12-1635168224003AMND
2014-12-1735168521001AMND
2014-12-1735168521005AM0.0320 ppb
2014-12-1735168521003AM1.50 ppb
2015-06-2935195641001AMND
2015-07-0135195641019AMND
2015-07-0135195641003AMND
2015-07-0135195641013AMND
2015-07-0135195641023AM0.0600 ppb
2015-07-0135195641017AM0.0360 ppb
2015-07-0135195641021AM1.90 ppb
2015-07-0135195641015AMND
2015-07-0135195641009AM2.20 ppb
2015-07-0135195641011AMND
2015-07-0135195641005AMND
2015-07-0135195641007AMND