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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Macon County PWSD 1

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.516 ppb167ND - 1.98 ppb
20140.358 ppb41ND - 1.43 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

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
2013-03-27AB946800.330 ppb
2013-03-27AB94682ND
2013-03-27AB946841.23 ppb
2013-03-27AB94686ND
2013-05-28AB97374ND
2013-05-28AB973721.46 ppb
2013-05-28AB97370ND
2013-05-28AB973680.210 ppb
2013-08-28AC08966ND
2013-08-28AC089641.98 ppb
2013-08-28AC08962ND
2013-08-28AC08960ND
2013-11-25AC14961ND
2013-11-25AC14963ND
2013-11-25AC149671.08 ppb
2013-12-30AC165071.96 ppb
2014-02-19AC19127ND
2014-02-19AC19129ND
2014-02-19AC191311.43 ppb
2014-02-19AC19133ND