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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Okeechobee Utility Authority

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).

 

12

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.0645 ppb440.0500 ppb - 0.0840 ppb
20150.0484 ppb880.0330 ppb - 0.0770 ppb
2016N/A00N/A
2017N/A00N/A

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 Result
2014-11-050.0500 ppb
2014-11-050.0560 ppb
2014-11-050.0680 ppb
2014-11-050.0840 ppb
2015-02-030.0640 ppb
2015-02-030.0770 ppb
2015-05-130.0540 ppb
2015-05-130.0430 ppb
2015-05-130.0450 ppb
2015-05-130.0340 ppb
2015-08-060.0330 ppb
2015-08-060.0370 ppb