Chromium (hexavalent)
City of Farmers Branch
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).
16
Samples
0
Samples exceeding legal limit (MCL)
16
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.355 ppb | 8 | 8 | 0.277 ppb - 0.435 ppb |
| 2014 | 0.416 ppb | 8 | 8 | 0.275 ppb - 0.694 ppb |
| 2015 | 0.309 ppb | 6 | 6 | 0.132 ppb - 0.440 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 | Lab ID | Result |
|---|---|---|
| 2013-07-22 | 3G30012-01 | 0.435 ppb |
| 2013-07-22 | 3G30012-02 | 0.367 ppb |
| 2013-07-22 | 3G30012-03 | 0.426 ppb |
| 2013-07-22 | 3G30012-04 | 0.296 ppb |
| 2013-10-24 | 3J31010-02A | 0.337 ppb |
| 2013-10-24 | 3J31010-01A | 0.396 ppb |
| 2013-10-24 | 3J31010-04A | 0.277 ppb |
| 2013-10-24 | 3J31010-03A | 0.306 ppb |
| 2014-01-27 | 4B04013-02 | 0.403 ppb |
| 2014-01-27 | 4B04013-03 | 0.376 ppb |
| 2014-01-27 | 4B04013-01 | 0.329 ppb |
| 2014-01-29 | 4B04018-01 | 0.478 ppb |
| 2014-04-21 | 4D29010-01 | 0.694 ppb |
| 2014-04-21 | 4D29010-02 | 0.275 ppb |
| 2014-04-21 | 4D29010-03 | 0.364 ppb |
| 2014-04-21 | 4D29010-04 | 0.410 ppb |