Know Your Environment. Protect Your Health.

Chromium (hexavalent)

West Knox Utility District

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).

 

15

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.0741 ppb11110.0360 ppb - 0.1000 ppb
20140.0598 ppb440.0530 ppb - 0.0680 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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 Result
2013-06-030.0870 ppb
2013-06-030.0810 ppb
2013-06-030.0940 ppb
2013-06-030.0870 ppb
2013-09-030.0800 ppb
2013-09-030.0860 ppb
2013-09-030.0810 ppb
2013-09-030.1000 ppb
2013-12-020.0360 ppb
2013-12-020.0400 ppb
2013-12-020.0430 ppb
2014-03-040.0530 ppb
2014-03-040.0610 ppb
2014-03-040.0680 ppb
2014-03-040.0570 ppb