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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Jordan Valley Water Conservancy District

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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.50 ppb21ND - 5.00 ppb
20130.328 ppb2816ND - 1.23 ppb
20140.710 ppb52ND - 3.24 ppb
20152.00 ppb31ND - 6.00 ppb
2016ND30ND
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 Result
2012-05-035.00 ppb
2012-07-18ND
2013-04-160.315 ppb
2013-04-16ND
2013-04-16ND
2013-04-160.283 ppb
2013-05-010.661 ppb
2013-05-010.228 ppb
2013-05-080.339 ppb
2013-05-080.528 ppb
2013-05-151.15 ppb
2013-05-15ND
2013-06-26ND
2013-07-010.995 ppb
2013-07-09ND
2013-07-09ND
2013-07-11ND
2013-07-11ND
2013-10-030.246 ppb
2013-10-03ND
2013-10-030.441 ppb
2013-10-03ND
2013-10-030.691 ppb
2013-10-09ND
2013-10-100.381 ppb
2013-10-151.23 ppb
2013-10-220.313 ppb
2013-11-050.626 ppb
2013-12-020.751 ppb
2013-12-02ND
2014-01-07ND
2014-01-07ND
2014-01-080.310 ppb
2014-01-13ND
2014-02-193.24 ppb
2015-01-13ND
2015-03-30ND
2015-07-216.00 ppb
2016-02-16ND
2016-02-25ND
2016-04-20ND