Chromium (hexavalent)
Centerville City Water System
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 |
---|---|---|---|---|
2013 | 0.219 ppb | 7 | 7 | 0.169 ppb - 0.376 ppb |
2014 | 0.213 ppb | 7 | 7 | 0.0550 ppb - 0.477 ppb |
2015 | N/A | 0 | 0 | N/A |
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 |
---|---|
2013-08-05 | 0.169 ppb |
2013-08-05 | 0.255 ppb |
2013-08-05 | 0.199 ppb |
2013-08-05 | 0.170 ppb |
2013-08-05 | 0.376 ppb |
2013-11-04 | 0.194 ppb |
2013-11-04 | 0.169 ppb |
2014-02-05 | 0.169 ppb |
2014-02-05 | 0.173 ppb |
2014-02-05 | 0.178 ppb |
2014-02-05 | 0.0550 ppb |
2014-02-05 | 0.477 ppb |
2014-05-05 | 0.202 ppb |
2014-05-05 | 0.239 ppb |