Chromium (hexavalent)
City of Henderson
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 | 0.0236 ppb | 12 | 4 | ND - 0.112 ppb |
2015 | 0.0662 ppb | 16 | 8 | ND - 0.537 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 | Lab ID | Result |
---|---|---|
2014-11-20 | 4K25047-04 | ND |
2014-11-20 | 4K25047-01 | ND |
2014-11-20 | 4K25047-02 | 0.0518 ppb |
2014-11-20 | 4K25047-07 | 0.0731 ppb |
2014-11-20 | 4K25047-06 | 0.112 ppb |
2014-11-20 | 4K25047-08 | ND |
2014-11-20 | 4K25047-10 | ND |
2014-11-20 | 4K25047-09 | 0.0464 ppb |
2014-11-20 | 4K25047-11 | ND |
2014-11-20 | 4K25047-12 | ND |
2014-11-20 | 4K25047-05 | ND |
2014-11-20 | 4K25047-03 | ND |
2015-02-19 | 5B25008-02 | 0.0586 ppb |
2015-02-19 | 5B25008-01 | 0.0972 ppb |
2015-05-20 | 5E27028-10 | ND |
2015-05-20 | 5E27028-01 | ND |
2015-05-20 | 5E27028-04 | ND |
2015-05-20 | 5E27028-07 | 0.0735 ppb |
2015-05-20 | 5E27028-03 | ND |
2015-05-20 | 5E27028-02 | 0.0713 ppb |
2015-05-20 | 5E27028-09 | 0.0568 ppb |
2015-05-20 | 5E27028-11 | ND |
2015-05-20 | 5E27028-12 | ND |
2015-05-20 | 5E27028-08 | ND |
2015-05-20 | 5E27028-05 | ND |
2015-05-20 | 5E27028-06 | 0.0971 ppb |
2015-09-02 | 5I04014-02 | 0.0682 ppb |
2015-09-02 | 5I04014-01 | 0.537 ppb |