p-Dichlorobenzene
Littleton Water Department
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 | 7 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 9 | 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 | Result |
|---|---|
| 2018-04-11 | ND |
| 2018-05-01 | ND |
| 2018-05-01 | ND |
| 2018-05-01 | ND |
| 2018-05-07 | ND |
| 2018-05-07 | ND |
| 2018-06-19 | ND |
| 2019-05-01 | ND |
| 2019-05-01 | ND |
| 2019-05-01 | ND |
| 2019-05-01 | ND |
| 2019-05-30 | ND |
| 2019-06-05 | ND |
| 2019-06-17 | ND |
| 2020-05-14 | ND |
| 2020-05-14 | ND |
| 2020-05-26 | ND |
| 2020-05-26 | ND |
| 2020-05-26 | ND |
| 2020-05-26 | ND |
| 2020-06-16 | ND |
| 2021-04-05 | ND |
| 2021-04-05 | ND |
| 2021-04-05 | ND |
| 2021-04-05 | ND |
| 2021-04-05 | ND |
| 2021-04-12 | ND |
| 2021-06-09 | ND |
| 2021-07-26 | ND |
| 2021-10-21 | ND |
| 2022-02-16 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2022-05-18 | ND |
| 2023-05-25 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-06-16 | ND |
| 2023-07-20 | ND |
| 2023-10-04 | ND |