p-Dichlorobenzene
Tallula Utility 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 | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | 2.89 ppb | 2 | 2 | 2.68 ppb - 3.09 ppb |
| 2022 | ND | 4 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-06-06 | 180607-010VO | ND |
| 2018-06-06 | 180607-011VO | ND |
| 2019-06-18 | 190619-007VO | ND |
| 2019-06-18 | 190619-008VO | ND |
| 2020-04-22 | 200423-003VO | ND |
| 2020-04-22 | 200423-004VO | ND |
| 2021-08-31 | VO-210901-005 | 2.68 ppb |
| 2021-08-31 | VO-210901-006 | 3.09 ppb |
| 2022-01-25 | VO-220126-006 | ND |
| 2022-01-25 | VO-220126-007 | ND |
| 2022-06-08 | VO-220609-001 | ND |
| 2022-11-28 | VO-221129-025 | ND |