p-Dichlorobenzene
Gray Water 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 |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-03-31 | ND | |
| 2014-06-30 | ND | |
| 2014-09-30 | ND | |
| 2014-12-29 | ND | |
| 2015-03-31 | K001375001 | ND |
| 2015-06-29 | K012988001 | ND |
| 2015-09-30 | K026741001 | ND |
| 2015-12-31 | K042308001 | ND |
| 2016-03-31 | L001035001 | ND |
| 2016-06-30 | L012374001 | ND |
| 2016-09-22 | L027494001 | ND |
| 2016-12-30 | L042460001 | ND |
| 2017-03-16 | M001246001 | ND |
| 2017-04-18 | 1704126-01 | ND |
| 2017-05-02 | 1700081-01 | ND |
| 2017-09-14 | 1710838-01 | ND |
| 2017-11-14 | 1716829-01 | ND |
| 2018-01-18 | 1801019-01 | ND |
| 2018-04-05 | 1804067-01 | ND |
| 2018-04-10 | 1804-01052-001 | ND |
| 2018-09-19 | 1809-02456-001 | ND |
| 2018-10-19 | 1810-02580-001 | ND |
| 2019-01-11 | 1901-00958-002 | ND |
| 2019-04-16 | 1904-01907-001 | ND |
| 2019-04-23 | 1904-02647-001 | ND |
| 2019-07-10 | 1907-01178-001 | ND |
| 2019-10-16 | 1910-02077-001 | ND |