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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Lee County WSC

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND20ND
2014N/A00N/A
2015ND20ND
2016ND50ND
2017ND50ND

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
2012-01-11AB77426ND
2013-10-14Q1308854029ND
2013-10-14Q1308854017ND
2015-03-04AC82817ND
2015-03-04AC82818ND
2016-01-27AD20303ND
2016-01-27AD20304ND
2016-01-27AD20302ND
2016-04-12AD32724ND
2016-04-12AD32718ND
2017-01-30AD67458ND
2017-01-30AD67457ND
2017-05-04AD82652ND
2017-05-04AD82645ND
2017-07-24AD90256ND