Know Your Environment. Protect Your Health.

Chromium (hexavalent)

Johnson City Water Department

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).

 

16

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0927 ppb12120.0420 ppb - 0.170 ppb
20150.0888 ppb440.0680 ppb - 0.107 ppb
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
2014-05-270.0780 ppb
2014-05-270.141 ppb
2014-05-270.0610 ppb
2014-05-270.0470 ppb
2014-08-200.131 ppb
2014-08-200.106 ppb
2014-08-200.0840 ppb
2014-08-200.0420 ppb
2014-11-100.170 ppb
2014-11-100.0970 ppb
2014-11-100.0910 ppb
2014-11-100.0640 ppb
2015-02-100.103 ppb
2015-02-100.107 ppb
2015-02-100.0770 ppb
2015-02-100.0680 ppb