Chromium (hexavalent)
Walnut Valley Water District
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 |
---|---|---|---|---|
2013 | 0.244 ppb | 3 | 3 | 0.0930 ppb - 0.450 ppb |
2014 | 0.213 ppb | 9 | 8 | ND - 0.660 ppb |
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 |
---|---|---|
2013-11-18 | B3K1478-01 | 0.450 ppb |
2013-11-18 | B3K1505-01 | 0.0930 ppb |
2013-11-18 | B3K1505-04 | 0.190 ppb |
2014-02-12 | B4B1265-07 | 0.0420 ppb |
2014-02-12 | B4B1265-01 | 0.660 ppb |
2014-02-12 | B4B1265-04 | ND |
2014-05-14 | B4E1481-07 | 0.0990 ppb |
2014-05-14 | B4E1481-01 | 0.540 ppb |
2014-05-14 | B4E1481-04 | 0.0330 ppb |
2014-08-13 | B4H1420-01 | 0.420 ppb |
2014-08-13 | B4H1420-04 | 0.0320 ppb |
2014-08-13 | B4H1420-07 | 0.0890 ppb |