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EWG's Tap Water Database

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Chromium (total)

Marshall

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

6

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
20112.00 ppb112.00 ppb
2012N/A00N/A
20131.34 ppb221.30 ppb - 1.38 ppb
20141.29 ppb330.890 ppb - 1.93 ppb
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)100 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2011-06-15AB491112.00 ppb
2013-06-03AB973601.38 ppb
2013-06-03AB973621.30 ppb
2014-03-19AC149531.05 ppb
2014-03-19AC149550.890 ppb
2014-06-11AC268631.93 ppb