Chromium (hexavalent)
City of Deer Park
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).
32
Samples
0
Samples exceeding legal limit (MCL)
32
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.0956 ppb | 8 | 8 | 0.0789 ppb - 0.105 ppb |
| 2014 | 0.0703 ppb | 24 | 24 | 0.0571 ppb - 0.0893 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 | Lab ID | Result |
|---|---|---|
| 2013-11-20 | 3K26018-03 | 0.101 ppb |
| 2013-11-20 | 3K26018-04 | 0.0841 ppb |
| 2013-11-20 | 3K26018-02 | 0.105 ppb |
| 2013-11-20 | 3K26018-08 | 0.0985 ppb |
| 2013-11-20 | 3K26018-01 | 0.0789 ppb |
| 2013-11-20 | 3K26018-06 | 0.104 ppb |
| 2013-11-20 | 3K26018-05 | 0.0982 ppb |
| 2013-11-20 | 3K26018-07 | 0.0954 ppb |
| 2014-03-10 | 4C18020-01 | 0.0887 ppb |
| 2014-03-10 | 4C18020-05 | 0.0705 ppb |
| 2014-03-10 | 4C18020-06 | 0.0765 ppb |
| 2014-03-10 | 4C18020-04 | 0.0708 ppb |
| 2014-03-10 | 4C18020-03 | 0.0715 ppb |
| 2014-03-10 | 4C18020-08 | 0.0695 ppb |
| 2014-03-10 | 4C18020-02 | 0.0571 ppb |
| 2014-03-10 | 4C18020-07 | 0.0704 ppb |
| 2014-05-19 | 4E23026-06 | 0.0685 ppb |
| 2014-05-19 | 4E23026-07 | 0.0644 ppb |
| 2014-05-19 | 4E23026-08 | 0.0645 ppb |
| 2014-05-19 | 4E23026-01 | 0.0633 ppb |
| 2014-05-19 | 4E23026-05 | 0.0641 ppb |
| 2014-05-19 | 4E23026-04 | 0.0604 ppb |
| 2014-05-19 | 4E23026-02 | 0.0734 ppb |
| 2014-05-19 | 4E23026-03 | 0.0601 ppb |
| 2014-08-19 | 4H27037-03 | 0.0821 ppb |
| 2014-08-19 | 4H27037-04 | 0.0768 ppb |
| 2014-08-19 | 4H27037-02 | 0.0759 ppb |
| 2014-08-19 | 4H27037-05 | 0.0669 ppb |
| 2014-08-19 | 4H27037-06 | 0.0893 ppb |
| 2014-08-19 | 4H27037-08 | 0.0772 ppb |
| 2014-08-19 | 4H27037-07 | 0.0589 ppb |
| 2014-08-20 | 4H27037-01 | 0.0673 ppb |