p-Dichlorobenzene
Port Sulphur Water District
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 | 4 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 4 | 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 | 35371297001 | ND |
| 2018-01-30 | 35371297001 | ND |
| 2019-02-05 | 35446733001 | ND |
| 2019-02-05 | 35446733001 | ND |
| 2019-05-30 | 35472024001 | ND |
| 2019-05-30 | 35472024001 | ND |
| 2020-03-10 | 35536681001 | ND |
| 2020-03-18 | 35538502001 | ND |
| 2020-11-18 | 35593410001 | ND |
| 2021-03-01 | 35615732001 | ND |
| 2021-03-01 | 35615734001 | ND |
| 2021-09-13 | 35663084001 | ND |
| 2021-10-26 | 35673864001 | ND |
| 2022-01-13 | 35690764001 | ND |
| 2023-02-01 | 35777177001 | ND |
| 2023-10-03 | 35831861001 | ND |
| 2023-10-05 | 35832714001 | ND |
| 2023-10-11 | 35834155001 | ND |