p-Dichlorobenzene
City of Hearne
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 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 |
|---|---|---|
| 2018-06-21 | AE31001 | ND |
| 2018-06-21 | AE31005 | ND |
| 2018-06-21 | AE31007 | ND |
| 2018-06-21 | AE30999 | ND |
| 2019-05-16 | AE66869 | ND |
| 2019-05-16 | AE66871 | ND |
| 2019-05-16 | AE66873 | ND |
| 2019-05-16 | AE66875 | ND |
| 2020-04-23 | AF07870 | ND |
| 2020-06-30 | AF17373 | ND |
| 2020-06-30 | AF17375 | ND |
| 2020-06-30 | AF17377 | ND |
| 2021-06-08 | AF56947 | ND |
| 2021-06-08 | AF56967 | ND |
| 2021-06-08 | AF56965 | ND |
| 2021-06-08 | AF56957 | ND |
| 2022-06-22 | AG01932 | ND |
| 2022-06-22 | AG01934 | ND |
| 2022-06-22 | AG01936 | ND |
| 2022-06-22 | AG01938 | ND |
| 2023-06-13 | AG44230 | ND |
| 2023-06-13 | AG44232 | ND |
| 2023-06-13 | AG44234 | ND |
| 2023-07-27 | AG50404 | ND |