Chromium (hexavalent)
Modern Electric Water Company
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).
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.171 ppb | 14 | 14 | 0.143 ppb - 0.201 ppb |
| 2015 | 0.168 ppb | 13 | 13 | 0.136 ppb - 0.206 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 |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2014-05-30 | WA97-SE1-14-10653-25561 | 0.184 ppb |
| 2014-05-30 | WA97-SE1-14-10653-25560 | 0.201 ppb |
| 2014-05-30 | WA97-SE1-14-10653-25562 | 0.170 ppb |
| 2014-05-30 | WA97-SE1-14-10653-25559 | 0.179 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47039 | 0.146 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47042 | 0.188 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47048 | 0.201 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47046 | 0.143 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47045 | 0.150 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47044 | 0.190 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47047 | 0.154 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47041 | 0.151 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47040 | 0.154 ppb |
| 2014-10-13 | WA97-SE1-14-20788-47043 | 0.182 ppb |
| 2015-01-12 | WA97-SE2-15-01353-3194 | 0.199 ppb |
| 2015-01-12 | WA97-SE2-15-01353-3195 | 0.203 ppb |
| 2015-01-12 | WA97-SE2-15-01353-3192 | 0.175 ppb |
| 2015-01-12 | WA97-SE2-15-01353-3193 | 0.206 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44654 | 0.140 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44655 | 0.159 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44651 | 0.160 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44649 | 0.136 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44658 | 0.140 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44657 | 0.156 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44652 | 0.180 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44653 | 0.175 ppb |
| 2015-09-14 | WA97-SE2-15-20060-44650 | 0.152 ppb |