p-Dichlorobenzene
Monona Waterworks
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 | 5 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-09-02 | 154323001 | ND |
| 2014-09-02 | 154276001 | ND |
| 2014-09-05 | 155135001 | ND |
| 2014-09-25 | 159907001 | ND |
| 2014-12-12 | 172471001 | ND |
| 2015-01-30 | 177607001 | ND |
| 2015-06-16 | 199937001 | ND |
| 2015-07-14 | 205376001 | ND |
| 2015-07-14 | 205378001 | ND |
| 2015-11-17 | 228870001 | ND |
| 2016-02-01 | 237611001 | ND |
| 2016-04-06 | 247252001 | ND |
| 2016-07-07 | 264567001 | ND |
| 2016-09-28 | 280796001 | ND |
| 2016-10-20 | 285154001 | ND |
| 2017-03-30 | 306799001 | ND |
| 2017-04-13 | 309656001 | ND |
| 2017-04-13 | 309655001 | ND |
| 2017-04-13 | 309654001 | ND |
| 2017-09-22 | 344258001 | ND |
| 2018-07-11 | 393604001 | ND |
| 2018-09-25 | 410134001 | ND |
| 2019-04-24 | 442084001 | ND |
| 2019-09-05 | 467810001 | ND |