p-Dichlorobenzene
Collegeville Trappe Joint Public Works Department
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 | 28 | 0 | ND |
| 2019 | ND | 28 | 0 | ND |
| 2020 | ND | 40 | 0 | ND |
| 2021 | ND | 40 | 0 | ND |
| 2022 | ND | 40 | 0 | ND |
| 2023 | ND | 39 | 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 |
|---|---|---|
| 2018-01-22 | 20180311 | ND |
| 2018-01-22 | 20180312 | ND |
| 2018-01-22 | 20180313 | ND |
| 2018-01-22 | 20180314 | ND |
| 2018-01-22 | 20180315 | ND |
| 2018-01-22 | 20180316 | ND |
| 2018-01-22 | 20180317 | ND |
| 2018-04-18 | 20181575 | ND |
| 2018-04-18 | 20181576 | ND |
| 2018-04-18 | 20181577 | ND |
| 2018-04-18 | 20181578 | ND |
| 2018-04-18 | 20181579 | ND |
| 2018-04-18 | 20181580 | ND |
| 2018-04-18 | 20181581 | ND |
| 2018-07-16 | 20182718 | ND |
| 2018-07-16 | 20182719 | ND |
| 2018-07-16 | 20182720 | ND |
| 2018-07-16 | 20182721 | ND |
| 2018-07-16 | 20182722 | ND |
| 2018-07-16 | 20182723 | ND |
| 2018-07-16 | 20182724 | ND |
| 2018-10-15 | 20183946 | ND |
| 2018-10-15 | 20183947 | ND |
| 2018-10-15 | 20183948 | ND |
| 2018-10-15 | 20183949 | ND |
| 2018-10-15 | 20183950 | ND |
| 2018-10-15 | 20183951 | ND |
| 2018-10-15 | 20183952 | ND |
| 2019-01-23 | 20190306 | ND |
| 2019-01-23 | 20190307 | ND |
| 2019-01-23 | 20190308 | ND |
| 2019-01-23 | 20190309 | ND |
| 2019-01-23 | 20190310 | ND |
| 2019-01-23 | 20190311 | ND |
| 2019-01-23 | 20190312 | ND |
| 2019-04-15 | 20191439 | ND |
| 2019-04-15 | 20191440 | ND |
| 2019-04-15 | 20191441 | ND |
| 2019-04-15 | 20191442 | ND |
| 2019-04-15 | 20191443 | ND |
| 2019-04-15 | 20191444 | ND |
| 2019-04-15 | 20191445 | ND |
| 2019-07-15 | 20192706 | ND |
| 2019-07-15 | 20192707 | ND |
| 2019-07-15 | 20192708 | ND |
| 2019-07-15 | 20192709 | ND |
| 2019-07-15 | 20192710 | ND |
| 2019-07-15 | 20192711 | ND |
| 2019-07-15 | 20192712 | ND |
| 2019-10-21 | 20194150 | ND |
| 2019-10-21 | 20194151 | ND |
| 2019-10-21 | 20194152 | ND |
| 2019-10-21 | 20194153 | ND |
| 2019-10-21 | 20194154 | ND |
| 2019-10-21 | 20194155 | ND |
| 2019-10-21 | 20194156 | ND |
| 2020-01-20 | 21500896.00 | ND |
| 2020-01-20 | 21500917.00 | ND |
| 2020-01-20 | 21500938.00 | ND |
| 2020-01-20 | 21500959.00 | ND |
| 2020-01-20 | 21500980.00 | ND |
| 2020-01-20 | 21501001.00 | ND |
| 2020-03-02 | 21845018.00 | ND |
| 2020-03-02 | 21845039.00 | ND |
| 2020-03-02 | 21845060.00 | ND |
| 2020-03-02 | 21845081.00 | ND |
| 2020-05-18 | 22213319.00 | ND |
| 2020-05-18 | 22213340.00 | ND |
| 2020-05-18 | 22213361.00 | ND |
| 2020-05-18 | 22213382.00 | ND |
| 2020-05-18 | 22213403.00 | ND |
| 2020-05-18 | 22213424.00 | ND |
| 2020-05-18 | 22213445.00 | ND |
| 2020-06-08 | 22414009.00 | ND |
| 2020-06-08 | 22414030.00 | ND |
| 2020-06-08 | 22414051.00 | ND |
| 2020-08-03 | 22605629.00 | ND |
| 2020-08-03 | 22605650.00 | ND |
| 2020-08-03 | 22605671.00 | ND |
| 2020-08-03 | 22605692.00 | ND |
| 2020-08-03 | 22605713.00 | ND |
| 2020-08-17 | 22797380.00 | ND |
| 2020-08-17 | 22797401.00 | ND |
| 2020-08-17 | 22797422.00 | ND |
| 2020-08-17 | 22797443.00 | ND |
| 2020-08-17 | 22797464.00 | ND |
| 2020-10-19 | 23180749.00 | ND |
| 2020-10-19 | 23180770.00 | ND |
| 2020-10-19 | 23180791.00 | ND |
| 2020-10-19 | 23180812.00 | ND |
| 2020-10-19 | 23180833.00 | ND |
| 2020-10-19 | 23180854.00 | ND |
| 2020-11-02 | 23360569.00 | ND |
| 2020-11-02 | 23360590.00 | ND |
| 2020-11-02 | 23360611.00 | ND |
| 2020-11-02 | 23360632.00 | ND |
| 2021-01-18 | 23711040.00 | ND |
| 2021-01-18 | 23711061.00 | ND |
| 2021-01-18 | 23711082.00 | ND |
| 2021-01-18 | 23711103.00 | ND |
| 2021-01-18 | 23711124.00 | ND |
| 2021-02-03 | 23887120.00 | ND |
| 2021-02-03 | 23887141.00 | ND |
| 2021-02-03 | 23887162.00 | ND |
| 2021-02-03 | 23887183.00 | ND |
| 2021-03-22 | 24058527.00 | ND |
| 2021-04-19 | 24246023.00 | ND |
| 2021-04-19 | 24246044.00 | ND |
| 2021-04-19 | 24246065.00 | ND |
| 2021-04-19 | 24246086.00 | ND |
| 2021-04-19 | 24246107.00 | ND |
| 2021-04-19 | 24246128.00 | ND |
| 2021-05-17 | 24436782.00 | ND |
| 2021-05-17 | 24436803.00 | ND |
| 2021-05-17 | 24436824.00 | ND |
| 2021-05-17 | 24436845.00 | ND |
| 2021-08-02 | 24827171.00 | ND |
| 2021-08-02 | 24827192.00 | ND |
| 2021-08-02 | 24827213.00 | ND |
| 2021-08-02 | 24827234.00 | ND |
| 2021-08-16 | 25021287.00 | ND |
| 2021-08-16 | 25021308.00 | ND |
| 2021-08-16 | 25021329.00 | ND |
| 2021-08-16 | 25021350.00 | ND |
| 2021-08-16 | 25021371.00 | ND |
| 2021-08-16 | 25021392.00 | ND |
| 2021-10-18 | 25402984.00 | ND |
| 2021-10-18 | 25403005.00 | ND |
| 2021-10-18 | 25403026.00 | ND |
| 2021-10-18 | 25403047.00 | ND |
| 2021-10-18 | 25403068.00 | ND |
| 2021-10-18 | 25403089.00 | ND |
| 2021-11-01 | 25586580.00 | ND |
| 2021-11-01 | 25586601.00 | ND |
| 2021-11-01 | 25586622.00 | ND |
| 2021-11-01 | 25586643.00 | ND |
| 2022-01-17 | 25941002.00 | ND |
| 2022-01-17 | 25941023.00 | ND |
| 2022-01-17 | 25941044.00 | ND |
| 2022-01-17 | 25941065.00 | ND |
| 2022-01-17 | 25941086.00 | ND |
| 2022-01-17 | 25941107.00 | ND |
| 2022-02-07 | 26116014.00 | ND |
| 2022-02-07 | 26116035.00 | ND |
| 2022-02-07 | 26116056.00 | ND |
| 2022-02-07 | 26116077.00 | ND |
| 2022-04-18 | 26462318.00 | ND |
| 2022-04-18 | 26462339.00 | ND |
| 2022-04-18 | 26462360.00 | ND |
| 2022-04-18 | 26462381.00 | ND |
| 2022-04-18 | 26462402.00 | ND |
| 2022-04-18 | 26462423.00 | ND |
| 2022-05-02 | 26646907.00 | ND |
| 2022-05-02 | 26646928.00 | ND |
| 2022-05-02 | 26646949.00 | ND |
| 2022-05-02 | 26646970.00 | ND |
| 2022-07-18 | 27035695.00 | ND |
| 2022-07-18 | 27035716.00 | ND |
| 2022-07-18 | 27035737.00 | ND |
| 2022-07-18 | 27035758.00 | ND |
| 2022-07-18 | 27035779.00 | ND |
| 2022-07-18 | 27035800.00 | ND |
| 2022-08-01 | 27232419.00 | ND |
| 2022-08-01 | 27232440.00 | ND |
| 2022-08-01 | 27232461.00 | ND |
| 2022-08-01 | 27232482.00 | ND |
| 2022-10-17 | 27639853.00 | ND |
| 2022-10-17 | 27639874.00 | ND |
| 2022-10-17 | 27639895.00 | ND |
| 2022-10-17 | 27639916.00 | ND |
| 2022-10-17 | 27639937.00 | ND |
| 2022-10-17 | 27639958.00 | ND |
| 2022-11-07 | 27821391.00 | ND |
| 2022-11-07 | 27821412.00 | ND |
| 2022-11-07 | 27821433.00 | ND |
| 2022-11-07 | 27821454.00 | ND |
| 2023-01-23 | 28171111.00 | ND |
| 2023-01-23 | 28171132.00 | ND |
| 2023-01-23 | 28171153.00 | ND |
| 2023-01-23 | 28171174.00 | ND |
| 2023-02-06 | 28348076.00 | ND |
| 2023-02-06 | 28348097.00 | ND |
| 2023-02-06 | 28348118.00 | ND |
| 2023-02-06 | 28348139.00 | ND |
| 2023-02-06 | 28348160.00 | ND |
| 2023-02-06 | 28348181.00 | ND |
| 2023-04-17 | 28700396.00 | ND |
| 2023-04-17 | 28700417.00 | ND |
| 2023-04-17 | 28700438.00 | ND |
| 2023-04-17 | 28700459.00 | ND |
| 2023-04-17 | 28700480.00 | ND |
| 2023-04-17 | 28700501.00 | ND |
| 2023-05-22 | 28899021.00 | ND |
| 2023-05-22 | 28899022.00 | ND |
| 2023-05-22 | 28899023.00 | ND |
| 2023-05-22 | 28899024.00 | ND |
| 2023-07-24 | 29300395.00 | ND |
| 2023-07-24 | 29300416.00 | ND |
| 2023-07-24 | 29300437.00 | ND |
| 2023-07-24 | 29300458.00 | ND |
| 2023-07-24 | 29300479.00 | ND |
| 2023-07-24 | 29300500.00 | ND |
| 2023-08-07 | 29495522.00 | ND |
| 2023-08-07 | 29495543.00 | ND |
| 2023-08-07 | 29495564.00 | ND |
| 2023-08-07 | 29495585.00 | ND |
| 2023-10-16 | 29885090.00 | ND |
| 2023-10-16 | 29885111.00 | ND |
| 2023-10-16 | 29885132.00 | ND |
| 2023-10-16 | 29885153.00 | ND |
| 2023-10-16 | 29885174.00 | ND |
| 2023-10-16 | 29885195.00 | ND |
| 2023-11-06 | 30069948.00 | ND |
| 2023-11-06 | 30069969.00 | ND |
| 2023-11-06 | 30069990.00 | ND |