p-Dichlorobenzene
North Wales Water Authority
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 | 14 | 0 | ND |
| 2017 | ND | 13 | 0 | ND |
| 2018 | ND | 13 | 0 | ND |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2014-03-04 | 20140745 | ND |
| 2014-03-17 | 20140959 | ND |
| 2014-03-17 | 20140958 | ND |
| 2014-03-17 | 20140966 | ND |
| 2014-03-17 | 20140965 | ND |
| 2014-03-17 | 20140964 | ND |
| 2014-03-17 | 20140963 | ND |
| 2014-03-17 | 20140962 | ND |
| 2014-03-17 | 20140961 | ND |
| 2014-03-17 | 20140960 | ND |
| 2014-06-10 | 20141963 | ND |
| 2014-08-05 | 20142640 | ND |
| 2015-03-10 | 12516862 | ND |
| 2015-03-16 | 12516757 | ND |
| 2015-03-16 | 12516841 | ND |
| 2015-03-16 | 12516820 | ND |
| 2015-03-16 | 12516799 | ND |
| 2015-03-16 | 12516778 | ND |
| 2015-03-16 | 12516736 | ND |
| 2015-03-16 | 12516715 | ND |
| 2015-03-16 | 12516694 | ND |
| 2015-03-16 | 12516673 | ND |
| 2015-07-06 | 13014444 | ND |
| 2015-09-14 | 13265884 | ND |
| 2015-12-01 | 13634667 | ND |
| 2016-03-07 | 13987492 | ND |
| 2016-03-14 | 13987429 | ND |
| 2016-03-14 | 13987471 | ND |
| 2016-03-14 | 13987450 | ND |
| 2016-03-14 | 13987408 | ND |
| 2016-03-14 | 13987387 | ND |
| 2016-03-14 | 13987366 | ND |
| 2016-03-14 | 13987345 | ND |
| 2016-03-14 | 13987324 | ND |
| 2016-03-14 | 13987303 | ND |
| 2016-06-07 | 14407373 | ND |
| 2016-06-29 | 14407400 | ND |
| 2016-09-06 | 14909849 | ND |
| 2016-12-06 | 15374017 | ND |
| 2017-03-16 | 15797860 | ND |
| 2017-05-01 | 16096366 | ND |
| 2017-05-01 | 16096345 | ND |
| 2017-05-01 | 16096282 | ND |
| 2017-05-01 | 16096450 | ND |
| 2017-05-01 | 16096303 | ND |
| 2017-05-01 | 16096429 | ND |
| 2017-05-01 | 16096408 | ND |
| 2017-05-01 | 16096324 | ND |
| 2017-05-01 | 16096387 | ND |
| 2017-06-06 | 16259051 | ND |
| 2017-09-05 | 16728651 | ND |
| 2017-12-05 | 17163813 | ND |
| 2018-03-12 | 20180936 | ND |
| 2018-03-12 | 20180937 | ND |
| 2018-03-12 | 20180935 | ND |
| 2018-03-12 | 20180938 | ND |
| 2018-03-12 | 20180934 | ND |
| 2018-03-12 | 20180939 | ND |
| 2018-03-12 | 20180933 | ND |
| 2018-03-12 | 20180940 | ND |
| 2018-03-12 | 20180932 | ND |
| 2018-03-13 | 20180956 | ND |
| 2018-06-05 | 20182148 | ND |
| 2018-09-04 | 20183373 | ND |
| 2018-12-18 | 20184775 | ND |
| 2019-03-05 | 20190857 | ND |
| 2019-03-12 | 20190961 | ND |
| 2019-03-12 | 20190960 | ND |
| 2019-03-12 | 20190962 | ND |
| 2019-03-12 | 20190959 | ND |
| 2019-03-12 | 20190963 | ND |
| 2019-03-12 | 20190958 | ND |
| 2019-03-12 | 20190964 | ND |
| 2019-03-12 | 20190957 | ND |
| 2019-03-12 | 20190956 | ND |
| 2019-09-03 | 20193443 | ND |
| 2019-12-03 | 20194748 | ND |