p-Dichlorobenzene
Kennett Square Municipal Water Works
NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for p-dichlorobenzene. Sample information shown below was taken by Chester Water Authority.
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 2 | 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
NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for p-dichlorobenzene. Sample information shown below was taken by Chester Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-09 | 2287664001 | ND |
| 2018-05-15 | 8012319-01 | ND |
| 2018-07-12 | 8020049-01 | ND |
| 2019-07-10 | 3044796001 | ND |
| 2020-02-03 | 21499828.00 | ND |
| 2020-05-01 | 22019655.00 | ND |
| 2020-07-01 | 22412573.00 | ND |
| 2021-04-09 | 24244244.00 | ND |
| 2021-07-28 | 24825591.00 | ND |
| 2022-04-29 | 26461080.00 | ND |
| 2022-08-09 | 27230375.00 | ND |
| 2022-11-08 | 27819905.00 | ND |
| 2023-07-12 | 29299106.00 | ND |
| 2023-11-08 | 30068039.00 | ND |
| 2023-11-15 | 30068566.00 | ND |