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Chromium (hexavalent)

Danville City Water Works

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).

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
20130.0762 ppb660.0360 ppb - 0.120 ppb
20140.0750 ppb220.0730 ppb - 0.0770 ppb
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.02 ppb

The 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
2013-06-18M13-18007-010.0360 ppb
2013-06-18M13-18007-030.0800 ppb
2013-09-23M13-23056-010.0670 ppb
2013-09-23M13-23056-030.120 ppb
2013-12-04M13-26297-010.0540 ppb
2013-12-04M13-26297-030.1000 ppb
2014-03-19M14-13406-010.0730 ppb
2014-03-19M14-13406-030.0770 ppb