p-Dichlorobenzene
Madison Water Works
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-10-14 | L727671-1 | ND |
| 2014-10-23 | L729555-1 | ND |
| 2015-12-09 | L806002-001 | ND |
| 2015-12-09 | L806002-002 | ND |
| 2016-11-09 | L871807-2 | ND |
| 2016-11-09 | L871807-1 | ND |
| 2017-10-11 | L943310-1 | ND |
| 2017-10-11 | L943310-2 | ND |
| 2018-01-08 | L961798-1 | ND |
| 2018-01-22 | L964821-1 | ND |
| 2018-04-09 | L984270-1 | ND |
| 2018-08-08 | L1016297-01 | ND |
| 2018-11-01 | L1040607-01 | ND |
| 2019-02-20 | L1072415-01 | ND |
| 2019-02-20 | L1072415-01A | ND |