Chromium (hexavalent)
City of Corvallis
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).
16
Samples
0
Samples exceeding legal limit (MCL)
16
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.511 ppb | 16 | 16 | 0.0930 ppb - 1.000 ppb |
| 2014 | N/A | 0 | 0 | N/A |
| 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 | Lab ID | Result |
|---|---|---|
| 2013-03-13 | 201303140537AM | 1.000 ppb |
| 2013-03-13 | 201303140539AM | 0.470 ppb |
| 2013-03-13 | 201303140541AM | 1.000 ppb |
| 2013-03-13 | 201303140543AM | 0.0930 ppb |
| 2013-06-12 | 201306130185AM | 0.720 ppb |
| 2013-06-12 | 201306130103AM | 0.200 ppb |
| 2013-06-12 | 201306130089AM | 0.110 ppb |
| 2013-06-12 | 201306130091AM | 0.670 ppb |
| 2013-09-18 | 201309200096AM | 0.450 ppb |
| 2013-09-18 | 201309190413AM | 0.280 ppb |
| 2013-09-18 | 201309190424AM | 0.460 ppb |
| 2013-09-18 | 201309200101AM | 0.250 ppb |
| 2013-12-19 | 201312200093AM | 0.820 ppb |
| 2013-12-19 | 201312200116AM | 0.520 ppb |
| 2013-12-19 | 201312200083AM | 0.810 ppb |
| 2013-12-19 | 201312200109AM | 0.320 ppb |