p-Dichlorobenzene
Upper Hanover 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 | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 9 | 0 | ND |
| 2021 | ND | 10 | 0 | ND |
| 2022 | ND | 13 | 0 | ND |
| 2023 | ND | 7 | 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 | 8001978-01 | ND |
| 2018-04-25 | 8008140-01 | ND |
| 2018-07-17 | 8017906-01 | ND |
| 2018-07-25 | 8019752-01 | ND |
| 2018-07-25 | 8019752-02 | ND |
| 2018-10-10 | 8028641-01 | ND |
| 2019-01-23 | 8038660-01 | ND |
| 2019-05-07 | 9009685-01 | ND |
| 2019-08-21 | 8038658-01 | ND |
| 2019-09-24 | 9034252-01 | ND |
| 2019-12-11 | 9033962-01 | ND |
| 2020-03-18 | 21847894.00 | ND |
| 2020-03-20 | 21847924.00 | ND |
| 2020-03-20 | 21847923.00 | ND |
| 2020-04-28 | 22024165.00 | ND |
| 2020-04-28 | 22024164.00 | ND |
| 2020-06-24 | 22417299.00 | ND |
| 2020-07-01 | 22417300.00 | ND |
| 2020-10-06 | 23183409.00 | ND |
| 2020-11-20 | 23362966.00 | ND |
| 2021-03-16 | 24061092.00 | ND |
| 2021-03-19 | 24061093.00 | ND |
| 2021-04-21 | 24248443.00 | ND |
| 2021-04-30 | 24248595.00 | ND |
| 2021-07-06 | 24829854.00 | ND |
| 2021-07-09 | 24830007.00 | ND |
| 2021-10-05 | 25405588.00 | ND |
| 2021-10-29 | 25405745.00 | ND |
| 2021-12-29 | 25765023.00 | ND |
| 2021-12-29 | 25765002.00 | ND |
| 2022-02-01 | 25943610.00 | ND |
| 2022-02-01 | 25943609.00 | ND |
| 2022-02-01 | 25943611.00 | ND |
| 2022-02-23 | 26118541.00 | ND |
| 2022-02-23 | 26118542.00 | ND |
| 2022-05-05 | 26649360.00 | ND |
| 2022-05-06 | 26649361.00 | ND |
| 2022-06-02 | 26649538.00 | ND |
| 2022-06-03 | 26649539.00 | ND |
| 2022-07-07 | 27037979.00 | ND |
| 2022-07-08 | 27037980.00 | ND |
| 2022-12-01 | 27999408.00 | ND |
| 2022-12-02 | 27999409.00 | ND |
| 2023-01-04 | 28173527.00 | ND |
| 2023-04-10 | 28703157.00 | ND |
| 2023-04-11 | 28703156.00 | ND |
| 2023-04-11 | 28703155.00 | ND |
| 2023-07-03 | 29302588.00 | ND |
| 2023-10-03 | 29700862.00 | ND |
| 2023-11-28 | 30246499.00 | ND |