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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Blythe

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013N/A00N/A
2014ND60ND
2015ND40ND
2016ND30ND
2017ND20ND

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
2012-12-264790-031-0735ND
2012-12-264790-030-0730ND
2014-10-21B4J2224-07ND
2014-10-21B4J2224-03ND
2014-10-21B4J2224-05ND
2014-10-21B4J2224-01ND
2014-12-174790-015-0740ND
2014-12-174790-006-0640ND
2015-04-14B5D1312-05ND
2015-04-14B5D1312-07ND
2015-04-14B5D1312-01ND
2015-04-14B5D1312-03ND
2016-11-294790-030-1015ND
2016-11-294790-031-1000ND
2016-11-294790-010-1115ND
2017-11-204790-015-0600ND
2017-11-204790-006-0700ND