p-Dichlorobenzene
North Texas Municipal Water District Wylie Water Treatment Plant
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 |
|---|---|---|---|---|
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-09-17 | Q1836833014 | ND |
| 2018-09-17 | Q1836833016 | ND |
| 2018-09-17 | Q1836833012 | ND |
| 2019-01-15 | Q1902044002 | ND |
| 2019-08-02 | Q1950721001 | ND |
| 2019-08-02 | Q1950721003 | ND |
| 2020-05-19 | Q2020083001 | ND |
| 2020-09-10 | Q2036102001 | ND |
| 2020-09-10 | Q2036102003 | ND |
| 2021-01-28 | Q2102310004 | ND |
| 2021-09-23 | Q2126118004 | ND |
| 2021-09-23 | Q2126118006 | ND |
| 2022-03-22 | Q2209138012 | ND |
| 2022-09-15 | Q2227685002 | ND |
| 2022-09-15 | Q2227685004 | ND |
| 2023-02-22 | Q2307413004 | ND |
| 2023-08-22 | Q2335430005 | ND |
| 2023-08-22 | Q2335430007 | ND |