p-Dichlorobenzene
Liberty City Water Supply Corporation
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 | 3 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 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 |
|---|---|---|
| 2014-06-16 | Q1421358001 | ND |
| 2014-06-30 | Q1424517004 | ND |
| 2014-06-30 | Q1424517002 | ND |
| 2015-04-14 | Q1513785002 | ND |
| 2015-04-14 | Q1513785012 | ND |
| 2015-04-14 | Q1513785009 | ND |
| 2015-05-05 | Q1516377002 | ND |
| 2016-05-12 | Q1619065010 | ND |
| 2016-05-12 | Q1619065007 | ND |
| 2016-05-12 | Q1619065005 | ND |
| 2016-05-12 | Q1619065004 | ND |
| 2017-03-28 | Q1712865022 | ND |
| 2017-03-28 | Q1712865004 | ND |
| 2017-03-28 | Q1712865021 | ND |
| 2017-03-28 | Q1712865002 | ND |
| 2018-06-14 | Q1823909012 | ND |
| 2018-06-14 | Q1823909006 | ND |
| 2018-06-14 | Q1823909010 | ND |
| 2018-06-14 | Q1823909009 | ND |
| 2019-03-28 | Q1912649008 | ND |
| 2019-03-28 | Q1912649013 | ND |
| 2019-03-28 | Q1912649012 | ND |
| 2019-03-28 | Q1912649009 | ND |