p-Dichlorobenzene
Horsham Water&sewer 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 | 8 | 0 | ND |
| 2019 | ND | 13 | 0 | ND |
| 2020 | ND | 23 | 0 | ND |
| 2021 | ND | 18 | 0 | ND |
| 2022 | ND | 18 | 0 | ND |
| 2023 | ND | 15 | 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 |
|---|---|---|
| 2018-01-30 | AF74813 | ND |
| 2018-01-30 | AF74814 | ND |
| 2018-02-13 | AF75932 | ND |
| 2018-03-23 | AF79016 | ND |
| 2018-06-22 | AF86999 | ND |
| 2018-08-30 | AF94269 | ND |
| 2018-10-03 | AF96985 | ND |
| 2018-12-27 | AG04620 | ND |
| 2019-02-11 | AG07773 | ND |
| 2019-02-11 | AG07771 | ND |
| 2019-02-11 | AG07775 | ND |
| 2019-02-11 | AG07772 | ND |
| 2019-02-27 | AG09179 | ND |
| 2019-04-11 | AG13046 | ND |
| 2019-04-11 | AG13047 | ND |
| 2019-05-09 | AG16016 | ND |
| 2019-05-09 | AG16019 | ND |
| 2019-05-23 | AG16891 | ND |
| 2019-08-21 | AG28299 | ND |
| 2019-09-18 | AG31925 | ND |
| 2019-09-18 | AG31924 | ND |
| 2020-01-16 | 21502658.00 | ND |
| 2020-01-16 | 21502637.00 | ND |
| 2020-01-16 | 21502616.00 | ND |
| 2020-01-16 | 21502595.00 | ND |
| 2020-03-12 | 21846181.00 | ND |
| 2020-03-12 | 21846160.00 | ND |
| 2020-03-12 | 21846139.00 | ND |
| 2020-03-12 | 21846118.00 | ND |
| 2020-03-12 | 21846097.00 | ND |
| 2020-04-08 | 22021659.00 | ND |
| 2020-04-08 | 22021617.00 | ND |
| 2020-04-08 | 22021596.00 | ND |
| 2020-04-08 | 22021638.00 | ND |
| 2020-05-20 | 22214501.00 | ND |
| 2020-05-20 | 22214480.00 | ND |
| 2020-07-22 | 22607035.00 | ND |
| 2020-07-22 | 22607014.00 | ND |
| 2020-07-22 | 22607056.00 | ND |
| 2020-07-22 | 22606993.00 | ND |
| 2020-10-21 | 23181842.00 | ND |
| 2020-10-21 | 23181821.00 | ND |
| 2020-10-21 | 23181779.00 | ND |
| 2020-10-21 | 23181800.00 | ND |
| 2021-01-06 | 23888199.00 | ND |
| 2021-01-06 | 23888178.00 | ND |
| 2021-01-06 | 23888136.00 | ND |
| 2021-01-06 | 23888157.00 | ND |
| 2021-05-13 | 24438523.00 | ND |
| 2021-05-13 | 24438502.00 | ND |
| 2021-05-13 | 24438481.00 | ND |
| 2021-05-13 | 24438460.00 | ND |
| 2021-07-08 | 24828064.00 | ND |
| 2021-07-21 | 24828169.00 | ND |
| 2021-07-21 | 24828232.00 | ND |
| 2021-07-21 | 24828211.00 | ND |
| 2021-07-21 | 24828190.00 | ND |
| 2021-07-29 | 25022382.00 | ND |
| 2021-09-29 | 25220227.00 | ND |
| 2021-10-07 | 25403887.00 | ND |
| 2021-10-13 | 25403922.00 | ND |
| 2021-10-27 | 25403932.00 | ND |
| 2022-01-05 | 26117087.00 | ND |
| 2022-01-12 | 26117045.00 | ND |
| 2022-01-12 | 26117066.00 | ND |
| 2022-02-10 | 26117144.00 | ND |
| 2022-02-17 | 26117108.00 | ND |
| 2022-02-24 | 26117121.00 | ND |
| 2022-04-06 | 26463501.00 | ND |
| 2022-04-20 | 26463543.00 | ND |
| 2022-04-20 | 26463564.00 | ND |
| 2022-04-20 | 26463522.00 | ND |
| 2022-07-07 | 27037097.00 | ND |
| 2022-07-13 | 27037076.00 | ND |
| 2022-07-13 | 27037055.00 | ND |
| 2022-07-14 | 27037034.00 | ND |
| 2022-11-02 | 27822988.00 | ND |
| 2022-11-09 | 27822925.00 | ND |
| 2022-11-10 | 27822946.00 | ND |
| 2022-11-10 | 27822967.00 | ND |
| 2023-01-18 | 28172699.00 | ND |
| 2023-01-19 | 28172678.00 | ND |
| 2023-01-26 | 28172720.00 | ND |
| 2023-01-26 | 28172741.00 | ND |
| 2023-04-12 | 28702130.00 | ND |
| 2023-04-26 | 28702172.00 | ND |
| 2023-04-26 | 28702193.00 | ND |
| 2023-04-26 | 28702109.00 | ND |
| 2023-04-26 | 28702151.00 | ND |
| 2023-07-27 | 29301885.00 | ND |
| 2023-07-27 | 29301864.00 | ND |
| 2023-07-27 | 29301906.00 | ND |
| 2023-10-19 | 29886664.00 | ND |
| 2023-10-19 | 29886643.00 | ND |
| 2023-10-19 | 29886622.00 | ND |