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EWG's Tap Water Database

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Chromium (total)

Jefferson County PWSD 3

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.

 

10

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
20131.36 ppb881.08 ppb - 1.78 ppb
20141.22 ppb221.19 ppb - 1.24 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
2013-04-08AB947061.12 ppb
2013-04-08AB947081.08 ppb
2013-05-29AB974461.38 ppb
2013-05-29AB974481.24 ppb
2013-08-21AC089781.33 ppb
2013-08-21AC089761.27 ppb
2013-11-20AC150391.78 ppb
2013-11-20AC150411.69 ppb
2014-02-25AC191431.24 ppb
2014-02-25AC191451.19 ppb