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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Olivenhain Municipal Water District

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

22

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.0317 ppb97ND - 0.0540 ppb
20140.0389 ppb98ND - 0.0620 ppb
2015ND10ND
2016ND10ND
2017ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2012-08-219590-003-0850ND
2013-08-209590-003-1200ND
2013-08-21201308220237AM0.0440 ppb
2013-08-21201308220206AM0.0540 ppb
2013-08-21201308220217AM0.0380 ppb
2013-08-27201308280258AM0.0400 ppb
2013-11-21201311220614AMND
2013-11-21201311220598AM0.0430 ppb
2013-11-21201311220602AM0.0340 ppb
2013-11-21201311220604AM0.0320 ppb
2014-02-12201402130504AM0.0460 ppb
2014-02-12201402130491AM0.0550 ppb
2014-02-12201402130485AM0.0480 ppb
2014-02-12201402130487AM0.0620 ppb
2014-05-28201405290358AM0.0360 ppb
2014-05-28201405290364AM0.0340 ppb
2014-05-28201405290356AM0.0360 ppb
2014-05-28201405290360AM0.0330 ppb
2014-08-209590-003-1330ND
2015-08-199590-003-1221ND
2016-08-179590-003-1100ND
2017-08-249590-003-0900ND