p-Dichlorobenzene
Liberty City 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 | 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 |
|---|---|---|
| 2018-06-14 | Q1823909009 | ND |
| 2018-06-14 | Q1823909010 | ND |
| 2018-06-14 | Q1823909012 | ND |
| 2018-06-14 | Q1823909006 | ND |
| 2019-03-28 | Q1912649008 | ND |
| 2019-03-28 | Q1912649009 | ND |
| 2019-03-28 | Q1912649012 | ND |
| 2019-03-28 | Q1912649013 | ND |
| 2020-10-13 | Q2039989007 | ND |
| 2020-10-13 | Q2039989009 | ND |
| 2020-10-13 | Q2039989011 | ND |
| 2020-10-13 | Q2039989030 | ND |
| 2021-06-24 | Q2116619002 | ND |
| 2021-11-19 | Q2132571004 | ND |
| 2021-11-19 | Q2132571006 | ND |
| 2021-11-19 | Q2132571008 | ND |
| 2022-03-28 | Q2209608003 | ND |
| 2022-10-24 | Q2231971001 | ND |
| 2022-10-24 | Q2231971003 | ND |
| 2022-10-24 | Q2231971005 | ND |
| 2023-02-16 | Q2306532003 | ND |
| 2023-06-14 | Q2322655004 | ND |
| 2023-06-14 | Q2322655006 | ND |
| 2023-06-14 | Q2322655018 | ND |