Chromium (hexavalent)
OSU Water Plant
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).
8
Samples
0
Samples exceeding legal limit (MCL)
7
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.188 ppb | 6 | 5 | ND - 0.293 ppb |
| 2015 | 0.0354 ppb | 2 | 2 | 0.0349 ppb - 0.0359 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 |
|---|---|---|
| 2014-06-05 | 4F05010-04 | 0.274 ppb |
| 2014-06-05 | 4F05010-01 | 0.234 ppb |
| 2014-09-02 | 4I02105-01 | 0.286 ppb |
| 2014-09-02 | 4I02105-04 | 0.293 ppb |
| 2014-12-02 | 4L02091-04 | ND |
| 2014-12-02 | 4L02091-01 | 0.0431 ppb |
| 2015-03-04 | 5C04030-01 | 0.0359 ppb |
| 2015-03-05 | 5C05048-01 | 0.0349 ppb |