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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

New Orleans Algiers Water Works

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
2012ND20ND
2013ND20ND
20140.293 ppb42ND - 0.800 ppb
20150.123 ppb84ND - 0.270 ppb
2016ND20ND
2017ND20ND

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
2012-03-05AD64077ND
2012-03-05AD64077ND
2013-01-22AD74817ND
2013-01-22AD74817ND
2014-02-04AD88733ND
2014-02-04AD88733ND
2014-10-08201410090314AM0.370 ppb
2014-11-13201411150091AM0.800 ppb
2015-01-14201501150656AMND
2015-01-14201501150513AMND
2015-03-1635179807001ND
2015-03-1635179807001ND
2015-04-09201504100285AM0.230 ppb
2015-04-09201504100205AM0.240 ppb
2015-07-14201507150562AM0.270 ppb
2015-07-14201507150600AM0.240 ppb
2016-01-2735226999001ND
2016-01-2735226999001ND
2017-02-2235296827001ND
2017-02-2235296827001ND