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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Lake Charles 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.

 

90

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND340ND
2013ND20ND
2014N/A00N/A
2015ND480ND
2016N/A00N/A
2017ND60ND

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
2012-04-30AD65259ND
2012-04-30AD65279ND
2012-04-30AD65269ND
2012-04-30AD65264ND
2012-04-30AD65264ND
2012-04-30AD65269ND
2012-04-30AD65274ND
2012-04-30AD65279ND
2012-04-30AD65259ND
2012-04-30AD65274ND
2012-05-29AD65734ND
2012-05-29AD65729ND
2012-05-29AD65739ND
2012-05-29AD65734ND
2012-05-29AD65724ND
2012-05-29AD65719ND
2012-05-29AD65739ND
2012-05-29AD65729ND
2012-05-29AD65724ND
2012-05-29AD65719ND
2012-07-23AD67933ND
2012-07-23AD67938ND
2012-07-23AD67943ND
2012-07-23AD67948ND
2012-07-23AD67953ND
2012-07-23AD67953ND
2012-07-23AD67948ND
2012-07-23AD67933ND
2012-07-23AD67938ND
2012-07-23AD67943ND
2012-10-08AD71678ND
2012-10-08AD71668ND
2012-10-08AD71678ND
2012-10-08AD71668ND
2013-03-20AD76236ND
2013-03-20AD76236ND
2015-03-2335180731003ND
2015-03-2335180731005ND
2015-03-2335180731002ND
2015-03-2335180731004ND
2015-03-2335180731001ND
2015-03-2335180731001ND
2015-03-2335180731005ND
2015-03-2335180731004ND
2015-03-2335180731003ND
2015-03-2335180731002ND
2015-03-2535181144001AMND
2015-05-0135186425011AMND
2015-05-0135186425005AMND
2015-05-0135186425001AMND
2015-05-0135186425013AMND
2015-05-0135186425007AMND
2015-05-0135186425009AMND
2015-06-2435194959001AMND
2015-07-2735199384005ND
2015-07-2735199384003ND
2015-07-2735199384001ND
2015-07-2735199384002ND
2015-07-2735199384004ND
2015-07-2735199384005ND
2015-07-2735199384004ND
2015-07-2735199384003ND
2015-07-2735199384002ND
2015-07-2735199384001ND
2015-08-0335200616003ND
2015-08-0335200616003ND
2015-08-0335200616004ND
2015-08-0335200616005ND
2015-08-0335200616005ND
2015-08-0335200616004ND
2015-08-0335200616002ND
2015-08-0335200616001ND
2015-08-0335200616002ND
2015-08-0335200616001ND
2015-09-2135208328005ND
2015-09-2135208328005ND
2015-09-2335208696001AMND
2015-10-0835211214002AMND
2015-10-0835211214004AMND
2015-11-2335218081005AMND
2015-11-2335218081009AMND
2015-11-2335218081003AMND
2015-11-2335218081007AMND
2015-11-2335218081001AMND
2017-12-18AE20279ND
2017-12-18AE20279ND
2017-12-18AE20283ND
2017-12-18AE20287ND
2017-12-18AE20287ND
2017-12-18AE20283ND