Know Your Environment. Protect Your Health.

Chromium (hexavalent)

Clackamas River Water - Clairmont

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).

 

7

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.248 ppb330.232 ppb - 0.271 ppb
20140.215 ppb440.199 ppb - 0.231 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 Lab ID Result
2013-07-08WA97-SE1-13-12096-274580.271 ppb
2013-10-22WA97-SE2-13-20264-460080.232 ppb
2013-10-22WA97-SE2-13-20264-460070.240 ppb
2014-01-27WA97-SE3-14-01509-38070.204 ppb
2014-01-27WA97-SE3-14-01509-38060.231 ppb
2014-04-29WA97-SE4-14-07609-183410.199 ppb
2014-04-29WA97-SE4-14-07609-183400.224 ppb