p-Dichlorobenzene
Big Flats Water District #2
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-04-04 | R1802920-001POCS | ND |
| 2018-04-04 | R1802920-002POCS | ND |
| 2019-04-03 | R1902904-001POCS | ND |
| 2019-04-03 | R1902904-002POCS | ND |
| 2020-01-08 | 3080420001POC | ND |
| 2020-04-10 | 3096566001POC | ND |
| 2020-04-10 | 3096566002POC | ND |
| 2020-04-10 | 3096566003POC | ND |
| 2020-07-01 | 3112191001POC | ND |
| 2020-10-07 | 3134231001POC | ND |
| 2021-01-13 | 3152400001POC | ND |
| 2021-04-07 | 3168913002POC | ND |
| 2021-04-07 | 3168913001POC | ND |
| 2021-04-07 | 3168913003POC | ND |
| 2021-07-07 | 3187629001 | ND |
| 2021-10-13 | R2110762-001POCS | ND |
| 2022-04-07 | S2D0298-03POCS | ND |
| 2022-04-07 | S2D0298-02POCS | ND |
| 2022-04-07 | S2D0298-01POCS | ND |
| 2023-04-24 | R2303482-001POC | ND |
| 2023-04-24 | R2303482-002POC | ND |
| 2023-07-19 | T3G2236-01POCS | ND |