p-Dichlorobenzene
Mustang Valley Water Supply Corporation
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 | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-02-20 | Q1806881002 | ND |
| 2018-11-28 | Q1848373003 | ND |
| 2018-11-28 | Q1848373005 | ND |
| 2018-11-28 | Q1848373006 | ND |
| 2018-11-28 | Q1848373008 | ND |
| 2019-03-13 | Q1910654001 | ND |
| 2019-03-13 | Q1910654005 | ND |
| 2019-03-13 | Q1910654009 | ND |
| 2019-03-13 | Q1910654013 | ND |
| 2019-09-11 | Q1964031002 | ND |
| 2020-06-10 | Q2023470003 | ND |
| 2020-08-26 | Q2034243038 | ND |
| 2020-08-26 | Q2034243029 | ND |
| 2020-08-26 | Q2034243019 | ND |
| 2020-08-26 | Q2034243011 | ND |
| 2020-08-26 | Q2034243027 | ND |
| 2021-07-28 | Q2119759001 | ND |
| 2021-07-28 | Q2119759006 | ND |
| 2021-07-28 | Q2119759008 | ND |
| 2021-07-28 | Q2119759010 | ND |
| 2021-07-28 | Q2119759012 | ND |
| 2022-10-12 | Q2230979013 | ND |
| 2022-10-12 | Q2230979019 | ND |
| 2022-10-12 | Q2230979017 | ND |
| 2022-10-12 | Q2230979015 | ND |
| 2022-10-12 | Q2230979002 | ND |
| 2023-07-24 | Q2329212003 | ND |
| 2023-07-24 | Q2329212017 | ND |
| 2023-10-31 | Q2346536005 | ND |
| 2023-10-31 | Q2346536007 | ND |
| 2023-10-31 | Q2346536009 | ND |