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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Edina

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.0486 ppb71ND - 0.340 ppb
20140.268 ppb440.230 ppb - 0.350 ppb
2015ND10ND
2016N/A00N/A
2017N/A00N/A

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
2012-08-1612H1755-01ND
2013-02-2713B1315-01ND
2013-07-251039552001ND
2013-07-251039552003ND
2013-07-251039552006ND
2013-07-2510395520090.340 ppb
2013-07-251039552012ND
2013-07-2513G2163-01ND
2014-01-2910695510090.240 ppb
2014-01-2910695510060.350 ppb
2014-01-2910695510030.250 ppb
2014-01-2910695510010.230 ppb
2015-06-242079084001ND