Chromium (hexavalent)
Upper Eagle Regional WA
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 | 0.175 ppb | 10 | 10 | 0.0610 ppb - 0.320 ppb |
2015 | 0.172 ppb | 24 | 24 | 0.0620 ppb - 0.340 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 | Result |
---|---|
2014-12-01 | 0.0730 ppb |
2014-12-02 | 0.320 ppb |
2014-12-02 | 0.270 ppb |
2014-12-02 | 0.0610 ppb |
2014-12-08 | 0.300 ppb |
2014-12-11 | 0.130 ppb |
2014-12-11 | 0.130 ppb |
2014-12-11 | 0.110 ppb |
2014-12-16 | 0.260 ppb |
2014-12-29 | 0.0920 ppb |
2015-03-03 | 0.160 ppb |
2015-03-03 | 0.220 ppb |
2015-03-03 | 0.1000 ppb |
2015-03-09 | 0.0740 ppb |
2015-03-09 | 0.220 ppb |
2015-03-12 | 0.0920 ppb |
2015-03-16 | 0.0730 ppb |
2015-06-10 | 0.290 ppb |
2015-06-10 | 0.120 ppb |
2015-06-17 | 0.340 ppb |
2015-06-18 | 0.280 ppb |
2015-06-18 | 0.310 ppb |
2015-06-22 | 0.0620 ppb |
2015-06-23 | 0.170 ppb |
2015-06-24 | 0.0750 ppb |
2015-06-29 | 0.240 ppb |
2015-06-30 | 0.180 ppb |
2015-09-01 | 0.120 ppb |
2015-09-01 | 0.0930 ppb |
2015-09-02 | 0.200 ppb |
2015-09-02 | 0.0850 ppb |
2015-09-02 | 0.180 ppb |
2015-09-02 | 0.130 ppb |
2015-09-21 | 0.310 ppb |