p-Dichlorobenzene
Markridge Park Subdivision Water System
NOTE: Markridge Park Subdivision Water System purchases water from City of Carencro Water System which is required to test for p-dichlorobenzene. Sample information shown below was taken by City of Carencro Water System.
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 | 0.0450 ppb | 6 | 1 | ND - 0.270 ppb |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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
NOTE: Markridge Park Subdivision Water System purchases water from City of Carencro Water System which is required to test for p-dichlorobenzene. Sample information shown below was taken by City of Carencro Water System.
| Date | Lab ID | Result |
|---|---|---|
| 2019-02-18 | 35449820002 | ND |
| 2019-02-18 | 35449820001 | ND |
| 2019-02-18 | 35449820002 | ND |
| 2019-02-18 | 35449820001 | ND |
| 2020-04-13 | 35543759004 | ND |
| 2020-04-13 | 35543759003 | ND |
| 2020-04-13 | 35543759002 | ND |
| 2020-04-13 | 35543759001 | 0.270 ppb |
| 2020-12-07 | 35597474002 | ND |
| 2020-12-07 | 35597474001 | ND |
| 2021-08-03 | 35653200001 | ND |
| 2021-08-03 | 35653200002 | ND |
| 2021-11-16 | 35678714004 | ND |
| 2021-11-16 | 35678714005 | ND |
| 2022-03-21 | 35705902004 | ND |
| 2022-03-21 | 35705902005 | ND |
| 2023-03-13 | 35786267001 | ND |
| 2023-03-13 | 35786267002 | ND |