Chromium (hexavalent)
City of Richland
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).
24
Samples
0
Samples exceeding legal limit (MCL)
24
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.123 ppb | 18 | 18 | 0.0460 ppb - 0.354 ppb |
| 2015 | 0.0718 ppb | 6 | 6 | 0.0540 ppb - 0.0820 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 |
|---|---|---|
| 2014-06-03 | WA97-SE1-14-1012 | 0.0670 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.0610 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.286 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.0590 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.0660 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.0560 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.0460 ppb |
| 2014-06-03 | WA97-SE1-14-1012 | 0.250 ppb |
| 2014-09-09 | WA97-SE2-14-1785 | 0.1000 ppb |
| 2014-09-09 | WA97-SE2-14-1785 | 0.352 ppb |
| 2014-09-09 | WA97-SE2-14-1785 | 0.0910 ppb |
| 2014-09-09 | WA97-SE2-14-1785 | 0.0790 ppb |
| 2014-12-02 | WA97-SE3-14-2365 | 0.0760 ppb |
| 2014-12-02 | WA97-SE3-14-2365 | 0.0460 ppb |
| 2014-12-02 | WA97-SE3-14-2365 | 0.0790 ppb |
| 2014-12-02 | WA97-SE3-14-2365 | 0.354 ppb |
| 2014-12-02 | WA97-SE3-14-2365 | 0.0700 ppb |
| 2014-12-02 | WA97-SE3-14-2365 | 0.0820 ppb |
| 2015-01-13 | WA97-SE3-15-0078 | 0.0820 ppb |
| 2015-01-13 | WA97-SE2-15-0078 | 0.0820 ppb |
| 2015-02-24 | WA97-SE4-15-0352 | 0.0600 ppb |
| 2015-03-10 | WA97-SE4-15-0449 | 0.0540 ppb |
| 2015-03-10 | WA97-SE4-15-0449 | 0.0740 ppb |
| 2015-03-10 | WA97-SE4-15-0449 | 0.0790 ppb |