Chromium (hexavalent)
Bellingham Dpw Water Sewer Div.
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 | 0.180 ppb | 12 | 12 | 0.0710 ppb - 0.350 ppb |
2014 | 0.239 ppb | 12 | 12 | 0.1000 ppb - 0.390 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 | Result |
---|---|
2013-10-09 | 0.0840 ppb |
2013-10-09 | 0.350 ppb |
2013-10-09 | 0.240 ppb |
2013-10-21 | 0.120 ppb |
2013-10-21 | 0.0750 ppb |
2013-10-21 | 0.240 ppb |
2013-10-21 | 0.210 ppb |
2013-10-21 | 0.0800 ppb |
2013-10-21 | 0.160 ppb |
2013-10-21 | 0.0710 ppb |
2013-10-21 | 0.230 ppb |
2013-10-21 | 0.300 ppb |
2014-04-15 | 0.330 ppb |
2014-04-15 | 0.1000 ppb |
2014-04-15 | 0.390 ppb |
2014-04-15 | 0.230 ppb |
2014-04-15 | 0.230 ppb |
2014-04-15 | 0.320 ppb |
2014-04-15 | 0.360 ppb |
2014-04-15 | 0.200 ppb |
2014-04-23 | 0.210 ppb |
2014-04-23 | 0.280 ppb |
2014-05-21 | 0.110 ppb |
2014-06-05 | 0.110 ppb |