p-Dichlorobenzene
Tyler County Water Supply Corporation
p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.
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 | ND | 4 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 6 ppb
The EWG Health Guideline of 6 ppb for p-dichlorobenzene 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.
EPA Maximum Contaminant
Level (MCL) 75 ppb
The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-12-16 | AC75118 | ND |
| 2014-12-16 | AC75114 | ND |
| 2014-12-16 | AC75108 | ND |
| 2014-12-29 | AC75829 | ND |
| 2015-09-02 | AD05443 | ND |
| 2015-09-02 | AD05447 | ND |
| 2015-09-02 | AD05455 | ND |
| 2015-09-02 | AD05439 | ND |
| 2015-09-02 | AD05453 | ND |
| 2015-09-02 | AD05441 | ND |
| 2016-03-28 | AD30749 | ND |
| 2016-03-28 | AD30751 | ND |
| 2016-06-20 | AD41167 | ND |
| 2016-06-20 | AD41179 | ND |
| 2016-06-20 | AD41177 | ND |
| 2016-06-20 | AD41149 | ND |
| 2016-06-20 | AD41183 | ND |
| 2016-09-15 | AD49756 | ND |
| 2017-09-13 | AD96055 | ND |
| 2017-09-13 | AD96009 | ND |
| 2017-09-13 | AD95999 | ND |
| 2017-11-09 | AE04349 | ND |
| 2017-11-09 | AE04369 | ND |
| 2017-11-09 | AE04351 | ND |
| 2018-03-27 | AE20431 | ND |
| 2018-03-27 | AE20427 | ND |
| 2018-03-27 | AE20429 | ND |
| 2018-03-27 | AE20435 | ND |
| 2018-03-27 | AE20433 | ND |
| 2019-03-05 | AE57142 | ND |
| 2019-05-22 | AE67693 | ND |
| 2019-05-22 | AE67697 | ND |
| 2019-05-22 | AE67695 | ND |
| 2019-11-26 | AE90633 | ND |