p-Dichlorobenzene
Quarryville Borough
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-01-09 | 1066488001 | ND |
| 2014-04-10 | 2001029001 | ND |
| 2014-07-10 | 2017224001 | ND |
| 2014-10-09 | 2033571001 | ND |
| 2015-02-19 | 12487560 | ND |
| 2015-04-09 | 12722176 | ND |
| 2015-07-09 | 13108333 | ND |
| 2015-10-08 | 13605080 | ND |
| 2016-01-07 | 13843211 | ND |
| 2016-04-07 | 14216705 | ND |
| 2016-07-14 | 14699910 | ND |
| 2016-10-06 | 15194356 | ND |
| 2017-01-09 | 15625150 | ND |
| 2017-04-06 | 16057668 | ND |
| 2017-08-10 | 16691236 | ND |
| 2017-10-06 | 16991871 | ND |
| 2017-11-09 | 17130619 | ND |
| 2018-01-11 | 7121162-01 | ND |
| 2018-04-09 | 8032882-01 | ND |
| 2018-07-10 | 8062555-01 | ND |
| 2018-10-11 | 8093465-01 | ND |
| 2019-01-10 | 8123550-01 | ND |
| 2019-04-11 | 9032840-01 | ND |
| 2019-07-09 | 9063178-01 | ND |
| 2019-10-10 | 9093307-01 | ND |