p-Dichlorobenzene
Emerald Lake
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 | 5 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-07-16 | 133667.02 | ND |
| 2014-10-15 | 136900.03 | ND |
| 2014-10-15 | 136900.05 | ND |
| 2014-10-15 | 136900.02 | ND |
| 2014-10-15 | 136900.01 | ND |
| 2015-10-19 | 149265.01 | ND |
| 2015-10-19 | 149265.02 | ND |
| 2015-10-19 | 149265.03 | ND |
| 2016-12-13 | 163860.03 | ND |
| 2016-12-13 | 163860.02 | ND |
| 2016-12-13 | 163860.01 | ND |
| 2017-02-21 | 165820.01 | ND |
| 2017-10-02 | 174061.01 | ND |
| 2017-10-02 | 174061.02 | ND |
| 2018-10-15 | 187909.01 | ND |
| 2018-10-15 | 187909.02 | ND |
| 2018-10-15 | 187909.03 | ND |
| 2019-10-11 | 201688.01 | ND |
| 2019-10-11 | 201688.02 | ND |
| 2019-10-11 | 201688.03 | ND |