Chromium (hexavalent)
Draper City Water System
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 | 0.960 ppb | 5 | 5 | 0.0880 ppb - 4.21 ppb |
2015 | 0.0898 ppb | 8 | 8 | 0.0576 ppb - 0.143 ppb |
2016 | 2.00 ppb | 3 | 1 | ND - 6.00 ppb |
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 |
---|---|
2015-03-25 | 0.110 ppb |
2015-03-25 | 0.143 ppb |
2015-06-22 | 0.0684 ppb |
2015-06-22 | 0.0791 ppb |
2015-09-23 | 0.0576 ppb |
2015-09-23 | 0.0648 ppb |
2015-12-21 | 0.0901 ppb |
2015-12-21 | 0.105 ppb |