Chromium (hexavalent)
Clinton 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).
14
Samples
0
Samples exceeding legal limit (MCL)
14
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.167 ppb | 11 | 11 | 0.0622 ppb - 0.467 ppb |
| 2015 | 0.0693 ppb | 3 | 3 | 0.0605 ppb - 0.0754 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 |
|---|---|
| 2014-06-10 | 0.180 ppb |
| 2014-06-10 | 0.183 ppb |
| 2014-06-10 | 0.0637 ppb |
| 2014-06-10 | 0.167 ppb |
| 2014-09-12 | 0.467 ppb |
| 2014-09-12 | 0.218 ppb |
| 2014-09-12 | 0.113 ppb |
| 2014-12-18 | 0.0760 ppb |
| 2014-12-18 | 0.101 ppb |
| 2014-12-18 | 0.0622 ppb |
| 2014-12-18 | 0.202 ppb |
| 2015-03-19 | 0.0721 ppb |
| 2015-03-19 | 0.0605 ppb |
| 2015-03-19 | 0.0754 ppb |