p-Dichlorobenzene
Westborough Water Department
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 | 12 | 0 | ND |
| 2015 | ND | 13 | 0 | ND |
| 2016 | ND | 12 | 0 | ND |
| 2017 | ND | 14 | 0 | ND |
| 2018 | ND | 16 | 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 | Result |
|---|---|
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-06-27 | ND |
| 2014-12-16 | ND |
| 2015-04-17 | ND |
| 2015-05-12 | ND |
| 2015-05-12 | ND |
| 2015-05-12 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-04 | ND |
| 2015-06-04 | ND |
| 2015-06-04 | ND |
| 2015-09-17 | ND |
| 2016-05-12 | ND |
| 2016-05-12 | ND |
| 2016-05-12 | ND |
| 2016-05-12 | ND |
| 2016-05-13 | ND |
| 2016-05-13 | ND |
| 2016-05-13 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2017-05-02 | ND |
| 2017-05-02 | ND |
| 2017-05-02 | ND |
| 2017-05-02 | ND |
| 2017-05-02 | ND |
| 2017-05-02 | ND |
| 2017-05-02 | ND |
| 2017-05-16 | ND |
| 2017-05-16 | ND |
| 2017-05-16 | ND |
| 2017-05-16 | ND |
| 2017-05-16 | ND |
| 2017-08-31 | ND |
| 2017-11-14 | ND |
| 2018-03-01 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-20 | ND |
| 2018-06-26 | ND |
| 2018-06-26 | ND |
| 2018-06-26 | ND |
| 2018-06-26 | ND |
| 2018-06-26 | ND |
| 2018-06-26 | ND |
| 2018-09-12 | ND |
| 2019-07-24 | ND |
| 2019-07-24 | ND |
| 2019-07-24 | ND |