p-Dichlorobenzene
Myrtle Springs 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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2018-06-28 | Q1825924020 | ND |
| 2018-06-28 | Q1825924022 | ND |
| 2018-06-28 | Q1825924017 | ND |
| 2019-08-26 | Q1959383002 | ND |
| 2019-08-26 | Q1959383004 | ND |
| 2019-08-26 | Q1959383006 | ND |
| 2020-03-23 | Q2012172009 | ND |
| 2020-05-21 | Q2020401006 | ND |
| 2020-08-12 | Q2032124004 | ND |
| 2020-08-12 | Q2032124006 | ND |
| 2020-08-12 | Q2032124008 | ND |
| 2020-08-12 | Q2032124019 | ND |
| 2020-11-20 | Q2046941001 | ND |
| 2021-06-29 | Q2116915007 | ND |
| 2021-06-29 | Q2116915013 | ND |
| 2021-06-29 | Q2116915011 | ND |
| 2021-06-29 | Q2116915009 | ND |
| 2022-06-09 | Q2216228001 | ND |
| 2022-06-09 | Q2216228003 | ND |
| 2022-06-09 | Q2216228005 | ND |
| 2022-06-09 | Q2216228007 | ND |
| 2023-04-19 | Q2314546005 | ND |
| 2023-04-19 | Q2314546007 | ND |
| 2023-04-19 | Q2314546009 | ND |
| 2023-04-19 | Q2314546011 | ND |
| 2023-09-06 | Q2338438003 | ND |
| 2023-12-06 | Q2352167001 | ND |