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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Auburn

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.

 

58

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND60ND
20140.126 ppb259ND - 0.550 ppb
2015ND50ND
2016ND60ND
2017ND100ND

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
2012-07-1843812ND
2012-07-1843813ND
2012-07-1843814ND
2012-07-1843815ND
2012-07-1843816ND
2012-07-1843811ND
2013-07-0248391ND
2013-07-0248392ND
2013-07-0248393ND
2013-07-0248394ND
2013-07-0248395ND
2013-10-0850045ND
2014-03-11A4B1976-01AND
2014-03-11A4B1976-05A0.380 ppb
2014-03-11A4B1976-12A0.550 ppb
2014-03-12A4B1878-05AND
2014-03-13A4B1976-08AND
2014-03-18A4C0166-05AND
2014-03-18A4C0166-01AND
2014-03-18A4C0166-09AND
2014-04-01A4C1981-01A0.290 ppb
2014-04-01A4C1981-05A0.320 ppb
2014-08-2653722ND
2014-08-2653706ND
2014-08-2653707ND
2014-08-2653708ND
2014-08-2653709ND
2014-08-2653723ND
2014-09-09A4I0142-01AND
2014-09-09A4I0142-06AND
2014-09-16A4I0632-01AND
2014-09-16A4I0632-06A0.490 ppb
2014-09-16A4I0632-11A0.240 ppb
2014-09-30A4I2084-01A0.320 ppb
2014-09-30A4I2084-06A0.340 ppb
2014-12-09A4L0057-06A0.210 ppb
2014-12-09A4L0057-01AND
2015-08-1958149ND
2015-08-1958153ND
2015-08-1958150ND
2015-08-1958148ND
2015-08-1958151ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-17ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-11-28ND
2017-12-05ND