Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chromium (total)

Heber Springs Water System

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND50ND
20140.380 ppb51ND - 1.90 ppb
2015ND10ND
2016ND10ND
2017ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2012-10-31123060004ND
2013-07-09131920036ND
2013-07-09131920037ND
2013-10-02132760007ND
2013-10-09132830021ND
2013-10-09132830022ND
2014-01-15140170019ND
2014-01-151401700201.90 ppb
2014-04-09141000043ND
2014-04-09141000042ND
2014-11-04Y143100044ND
2015-10-22Y152950003ND
2016-10-17Y162940007ND
2017-10-24Y172990001ND