Chromium (hexavalent)
City of Grants Pass
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 | 0.202 ppb | 4 | 4 | 0.0870 ppb - 0.310 ppb |
2015 | 0.162 ppb | 4 | 4 | 0.0920 ppb - 0.270 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 |
---|---|---|
2014-07-17 | 201407180246AM | 0.270 ppb |
2014-07-17 | 201407180244AM | 0.140 ppb |
2014-10-21 | 201410220134AM | 0.310 ppb |
2014-10-27 | 201410280615AM | 0.0870 ppb |
2015-01-12 | 201501130512AM | 0.0940 ppb |
2015-01-12 | 201501130705AM | 0.270 ppb |
2015-04-13 | 201504140764AM | 0.190 ppb |
2015-04-13 | 201504140642AM | 0.0920 ppb |