p-Dichlorobenzene
Two Way Special 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 | 6 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 6 | 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 |
|---|---|---|
| 2018-06-25 | Q1825251009 | ND |
| 2018-06-25 | Q1825251011 | ND |
| 2018-06-25 | Q1825251014 | ND |
| 2018-06-25 | Q1825251017 | ND |
| 2018-06-25 | Q1825251024 | ND |
| 2018-06-25 | Q1825251008 | ND |
| 2019-10-14 | Q1972459011 | ND |
| 2019-10-14 | Q1972459009 | ND |
| 2019-10-14 | Q1972459007 | ND |
| 2019-10-14 | Q1972459005 | ND |
| 2019-10-14 | Q1972459003 | ND |
| 2019-12-11 | Q1979771004 | ND |
| 2020-08-25 | Q2034116003 | ND |
| 2020-10-12 | Q2039772007 | ND |
| 2020-10-12 | Q2039772009 | ND |
| 2020-10-12 | Q2039772011 | ND |
| 2020-10-12 | Q2039772013 | ND |
| 2021-11-09 | Q2131341012 | ND |
| 2021-11-09 | Q2131341022 | ND |
| 2021-11-09 | Q2131341020 | ND |
| 2021-11-09 | Q2131341018 | ND |
| 2021-11-09 | Q2131341016 | ND |
| 2021-11-09 | Q2131341014 | ND |
| 2022-10-11 | Q2230663004 | ND |
| 2022-10-11 | Q2230663006 | ND |
| 2022-10-11 | Q2230663008 | ND |
| 2022-10-11 | Q2230663012 | ND |
| 2022-10-11 | Q2230663014 | ND |
| 2022-12-06 | Q2236335001 | ND |
| 2023-07-24 | Q2329218001 | ND |
| 2023-10-31 | Q2346526005 | ND |
| 2023-10-31 | Q2346526007 | ND |
| 2023-10-31 | Q2346526009 | ND |
| 2023-10-31 | Q2346526011 | ND |