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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Lafayette Utilities 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.

MORE ABOUT THIS CONTAMINANT

 

94

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.580 ppb53ND - 1.10 ppb
20140.400 ppb73ND - 1.10 ppb
2015ND300ND
2016ND140ND
2017ND40ND
20181.80 ppb206ND - 6.00 ppb
2019ND140ND

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
2013-12-1929497761.10 ppb
2013-12-1929494011.10 ppb
2013-12-1929501450.700 ppb
2013-12-192949412ND
2013-12-192949884ND
2014-06-2630540251.10 ppb
2014-06-2630540141.10 ppb
2014-06-2630538960.600 ppb
2014-06-263054044ND
2014-06-263054551ND
2014-11-03AD99266ND
2014-11-03AD99266ND
2015-02-2335176705001ND
2015-02-2335176705001ND
2015-06-0835192506001ND
2015-06-0835192506001ND
2015-07-2735199527005ND
2015-07-2735199527001ND
2015-07-2735199527002ND
2015-07-2735199527003ND
2015-07-2735199527005ND
2015-07-2735199527004ND
2015-07-2735199527003ND
2015-07-2735199527002ND
2015-07-2735199527001ND
2015-07-2735199527004ND
2015-08-1735203222001ND
2015-08-1735203222002ND
2015-08-1735203222003ND
2015-08-1735203222004ND
2015-08-1735203222005ND
2015-08-1735203222001ND
2015-08-1735203222002ND
2015-08-1735203222003ND
2015-08-1735203222004ND
2015-08-1735203222005ND
2015-11-3035218949003ND
2015-11-3035218949003ND
2015-11-3035218949004ND
2015-11-3035218949005ND
2015-11-3035218949005ND
2015-11-3035218949004ND
2016-03-1435234164005ND
2016-03-1435234164005ND
2016-03-2135235879005ND
2016-03-2135235879005ND
2016-08-0835259258005ND
2016-08-0835259258005ND
2016-08-1535260131002ND
2016-08-1535260131003ND
2016-08-1535260131004ND
2016-08-1535260131001ND
2016-08-1535260131004ND
2016-08-1535260131003ND
2016-08-1535260131002ND
2016-08-1535260131001ND
2017-09-25AE18498ND
2017-09-25AE18498ND
2017-11-27AE20051ND
2017-11-27AE20051ND
2018-03-05AE20864ND
2018-03-05AE20864ND
2018-03-05AE20861ND
2018-03-05AE20867ND
2018-03-05AE20858ND
2018-03-05AE20855ND
2018-03-05AE20855ND
2018-03-05AE20858ND
2018-03-05AE20861ND
2018-03-05AE20867ND
2018-04-30AE21621ND
2018-04-30AE21621ND
2018-05-14AE21747ND
2018-05-14AE21747ND
2018-06-18AE219186.00 ppb
2018-06-18AE219186.00 ppb
2018-06-19AE219246.00 ppb
2018-06-19AE219216.00 ppb
2018-06-19AE219216.00 ppb
2018-06-19AE219246.00 ppb
2019-01-14B1900254-001ND
2019-01-14B1900254-002ND
2019-01-14B1900254-002ND
2019-01-14B1900254-001ND
2019-08-12B1903460-001ND
2019-08-12B1903460-005ND
2019-08-12B1903460-004ND
2019-08-12B1903460-003ND
2019-08-12B1903460-002ND
2019-08-12B1903460-001ND
2019-08-12B1903460-005ND
2019-08-12B1903460-004ND
2019-08-12B1903460-003ND
2019-08-12B1903460-002ND