p-Dichlorobenzene
Hyannis Water System
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 10 | 0 | ND |
| 2015 | ND | 10 | 0 | ND |
| 2016 | ND | 9 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 9 | 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 |
|---|---|
| 2014-02-11 | ND |
| 2014-04-08 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-10-15 | ND |
| 2015-01-13 | ND |
| 2015-04-21 | ND |
| 2015-07-14 | ND |
| 2015-07-14 | ND |
| 2015-07-14 | ND |
| 2015-07-14 | ND |
| 2015-07-14 | ND |
| 2015-07-14 | ND |
| 2015-07-14 | ND |
| 2015-11-03 | ND |
| 2016-01-14 | ND |
| 2016-04-13 | ND |
| 2016-06-08 | ND |
| 2016-06-29 | ND |
| 2016-07-19 | ND |
| 2016-07-19 | ND |
| 2016-07-19 | ND |
| 2016-07-19 | ND |
| 2016-10-11 | ND |
| 2017-01-19 | ND |
| 2017-04-19 | ND |
| 2017-04-19 | ND |
| 2017-07-12 | ND |
| 2017-07-12 | ND |
| 2017-07-12 | ND |
| 2017-10-18 | ND |
| 2018-01-09 | ND |
| 2018-05-03 | ND |
| 2018-07-17 | ND |
| 2018-07-17 | ND |
| 2018-07-17 | ND |
| 2018-10-23 | ND |
| 2019-01-09 | ND |
| 2019-04-11 | ND |
| 2019-05-08 | ND |
| 2019-05-08 | ND |
| 2019-08-09 | ND |
| 2019-08-09 | ND |
| 2019-08-09 | ND |
| 2019-10-08 | ND |
| 2019-10-08 | ND |