EWG's Tap Water Database


Chromium (total)

Forrest City Waterworks

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20102.10 ppb221.10 ppb - 3.10 ppb
20111.10 ppb111.10 ppb
20131.62 ppb660.930 ppb - 2.60 ppb
20141.20 ppb111.20 ppb

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
2010-02-101004200433.10 ppb
2010-02-101004200421.10 ppb
2011-05-251114600031.10 ppb
2013-02-121304600030.930 ppb
2013-02-121304400011.50 ppb
2013-02-121304400022.60 ppb
2013-02-121304600021.80 ppb
2013-08-121322700431.30 ppb
2013-08-121322700441.60 ppb
2014-04-231411400121.20 ppb