p-Dichlorobenzene
Purcellville, Town of
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 | 10 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 10 | 0 | ND |
| 2023 | ND | 11 | 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 |
|---|---|---|
| 2018-02-27 | E180100342 | ND |
| 2018-05-23 | E180303850 | ND |
| 2018-05-30 | E180303851 | ND |
| 2018-08-21 | E180601975 | ND |
| 2018-08-28 | E180601971 | ND |
| 2018-08-28 | E180601981 | ND |
| 2018-11-19 | E180901410 | ND |
| 2018-12-11 | E180901404 | ND |
| 2019-02-19 | E181104004 | ND |
| 2019-02-19 | E181104015 | ND |
| 2019-02-19 | E181104016 | ND |
| 2019-03-21 | E190302948 | ND |
| 2019-03-21 | E190302957 | ND |
| 2019-05-29 | E190304839 | ND |
| 2019-05-29 | E190304846 | ND |
| 2019-09-10 | E190900749 | ND |
| 2019-11-25 | E191000255 | ND |
| 2019-12-04 | E191000266 | ND |
| 2020-02-25 | E191203663 | ND |
| 2020-05-20 | E200302298 | ND |
| 2020-06-16 | E200600508 | ND |
| 2020-08-11 | E200601275 | ND |
| 2020-10-19 | E200906213 | ND |
| 2020-11-16 | E200906214 | ND |
| 2021-03-15 | E210100113 | ND |
| 2021-05-17 | E210400628 | ND |
| 2021-05-24 | E210400643 | ND |
| 2021-08-23 | E210701941 | ND |
| 2021-08-23 | E210701945 | ND |
| 2021-08-23 | E210705571 | ND |
| 2021-11-30 | E210901978 | ND |
| 2021-11-30 | E210901979 | ND |
| 2021-11-30 | E211100054 | ND |
| 2022-02-23 | E211206105 | ND |
| 2022-02-23 | E211201665 | ND |
| 2022-02-23 | E211201664 | ND |
| 2022-02-23 | E211201666 | ND |
| 2022-05-23 | E220303695 | ND |
| 2022-05-23 | E220303694 | ND |
| 2022-06-29 | E220607528 | ND |
| 2022-08-22 | E220607516 | ND |
| 2022-11-14 | E220904387 | ND |
| 2022-11-14 | E220904386 | ND |
| 2023-02-13 | E221203953 | ND |
| 2023-05-01 | E230305398 | ND |
| 2023-05-01 | E230305409 | ND |
| 2023-05-01 | E230305414 | ND |
| 2023-05-17 | E230305386 | ND |
| 2023-05-17 | E230305403 | ND |
| 2023-05-17 | E230305420 | ND |
| 2023-05-17 | E230305423 | ND |
| 2023-08-28 | E230603381 | ND |
| 2023-11-01 | E230904714 | ND |
| 2023-12-07 | E230903619 | ND |