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).
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.0645 ppb | 4 | 4 | 0.0500 ppb - 0.0840 ppb |
2015 | 0.0484 ppb | 8 | 8 | 0.0330 ppb - 0.0770 ppb |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/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 |
---|---|
2014-11-05 | 0.0500 ppb |
2014-11-05 | 0.0560 ppb |
2014-11-05 | 0.0680 ppb |
2014-11-05 | 0.0840 ppb |
2015-02-03 | 0.0640 ppb |
2015-02-03 | 0.0770 ppb |
2015-05-13 | 0.0540 ppb |
2015-05-13 | 0.0430 ppb |
2015-05-13 | 0.0450 ppb |
2015-05-13 | 0.0340 ppb |
2015-08-06 | 0.0330 ppb |
2015-08-06 | 0.0370 ppb |