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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Charlotte Water

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.

MORE ABOUT THIS CONTAMINANT

 

114

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.300 ppb110.300 ppb
20140.0735 ppb4310ND - 0.440 ppb
2015ND200ND
2016ND200ND
2017ND200ND
2018ND50ND
2019ND50ND

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
2013-10-3035114055011AM0.300 ppb
2014-01-3035124487001AM0.290 ppb
2014-01-3035124487013AM0.290 ppb
2014-01-3035124487011AM0.350 ppb
2014-01-3035124487005AM0.300 ppb
2014-01-3035124487007AM0.280 ppb
2014-02-19AE92460-IOCND
2014-02-19AE92461-IOCND
2014-02-19AE92462-IOCND
2014-02-19AE92463-IOCND
2014-02-19AE92464-IOCND
2014-04-0935133818005AMND
2014-04-0935133818009AMND
2014-04-0935133818003AMND
2014-04-0935133818007AMND
2014-04-0935133818001AMND
2014-04-2835135763001AMND
2014-04-2935136065001AMND
2014-04-2935136065005AMND
2014-04-2935136065003AMND
2014-04-2935136065009AMND
2014-04-2935136065011AMND
2014-04-2935136065007AMND
2014-05-13AF01539-IOCND
2014-05-13AF01535-IOCND
2014-05-13AF01536-IOCND
2014-05-13AF01538-IOCND
2014-05-13AF01537-IOCND
2014-07-3035148391009AM0.330 ppb
2014-07-3035148391005AM0.280 ppb
2014-07-3035148391007AM0.440 ppb
2014-07-3035148391001AM0.310 ppb
2014-07-3135148391011AM0.290 ppb
2014-08-07AF10203-IOCND
2014-08-07AF10204-IOCND
2014-08-07AF10207-IOCND
2014-08-07AF10205-IOCND
2014-08-07AF10206-IOCND
2014-10-2135160532001AMND
2014-12-03AF22248-IOCND
2014-12-03AF22249-IOCND
2014-12-03AF22245-IOCND
2014-12-03AF22250-IOCND
2014-12-03A22251-IOCND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-24ND
2015-06-24ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2016-02-03AF65972_IOCND
2016-02-03AF65968_IOCND
2016-02-03AF65971_IOCND
2016-02-03AF65969_IOCND
2016-02-03AF65970_IOCND
2016-05-04AF76708_IOCND
2016-05-04AF76704_IOCND
2016-05-04AF76709_IOCND
2016-05-04AF76703_IOCND
2016-05-04AF76707_IOCND
2016-08-03AF87876_IOCND
2016-08-03AF87872_IOCND
2016-08-03AF87874_IOCND
2016-08-03AF87877_IOCND
2016-08-03AF87888_IOCND
2016-11-02AF98939_IOCND
2016-11-02AF98937_IOCND
2016-11-02AF98938_IOCND
2016-11-02AF98936_IOCND
2016-11-02AF98935_IOCND
2017-02-01AG08742_IOCND
2017-02-01AG08738_IOCND
2017-02-01AG08739_IOCND
2017-02-01AG08740_IOCND
2017-02-01AG08741_IOCND
2017-05-04AG19796_IOCND
2017-05-04AG19792_IOCND
2017-05-04AG19793_IOCND
2017-05-08AG20107_IOCND
2017-05-08AG20108_IOCND
2017-08-01AG30318_IOCND
2017-08-01AG30321_IOCND
2017-08-01AG30317_IOCND
2017-08-01AG30319_IOCND
2017-08-01AG30320_IOCND
2017-11-01AG41977_IOCND
2017-11-01AG41980_IOCND
2017-11-01AG41978_IOCND
2017-11-01AG41979_IOCND
2017-11-01AG41981_IOCND
2018-02-08AG53373_IOC ND
2018-02-08AG53374_IOC ND
2018-02-08AG53375_IOC ND
2018-02-08AG53376_IOC ND
2018-02-08AG53379_IOC ND
2019-02-07AG96876_IOC ND
2019-02-07AG96877_IOC ND
2019-02-07AG96880_IOC ND
2019-02-07AG96881_IOC ND
2019-02-07AG96882_IOC ND