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EWG's Tap Water Database

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Chromium (hexavalent)

Dalton Utilities

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
20150.0543 ppb2415ND - 0.230 ppb

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
2015-03-0435178480003AM0.0490 ppb
2015-03-0435178480001AM0.0590 ppb
2015-03-0935178704001AM0.0800 ppb
2015-03-3115041001-003ND
2015-03-3115041001-002ND
2015-03-3115041001-001ND
2015-06-0915061575-003ND
2015-06-0915061575-004ND
2015-06-0915061575-006ND
2015-06-0915061575-002ND
2015-06-0915061575-001ND
2015-06-0915061575-005ND
2015-09-0935206664001AM0.0450 ppb
2015-09-0935206663001AM0.1000 ppb
2015-09-0935206665003AM0.0590 ppb
2015-09-0935206664003AM0.0760 ppb
2015-09-0935206663003AM0.0640 ppb
2015-09-0935206665001AM0.200 ppb
2015-12-0835220221012AM0.0670 ppb
2015-12-0835220221008AM0.0650 ppb
2015-12-0835220221006AM0.0700 ppb
2015-12-0835220221010AM0.0600 ppb
2015-12-0835220221001AM0.230 ppb
2015-12-0835220221003AM0.0800 ppb