p-Dichlorobenzene
Columbus Public Water System
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 | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-02-01 | 18-11908-01C | ND |
| 2018-02-01 | 18-11908-02C | ND |
| 2019-02-05 | 19-12453-01C | ND |
| 2019-02-05 | 19-12453-02C | ND |
| 2020-02-11 | 20-13191-02B | ND |
| 2020-02-11 | 20-13191-03B | ND |
| 2020-06-02 | 20-21667-03B | ND |
| 2021-02-02 | 21-12408-01B | ND |
| 2021-02-02 | 21-12408-02B | ND |
| 2022-02-08 | 22-13013-01C | ND |
| 2022-02-08 | 22-13013-02C | ND |
| 2023-03-08 | 2308389-01B | ND |
| 2023-03-08 | 2308389-03B | ND |
| 2023-06-20 | 2321840-01B | ND |