p-Dichlorobenzene
Utrwd Regional Water Treatment Plant
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 | 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 |
|---|---|---|
| 2014-07-22 | Q1429878002 | ND |
| 2014-07-22 | Q1429878004 | ND |
| 2015-09-16 | Q1536495003 | ND |
| 2015-09-21 | Q1536819003 | ND |
| 2016-09-01 | Q1635093002 | ND |
| 2016-09-02 | Q1635676002 | ND |
| 2017-09-07 | Q1742147002 | ND |
| 2017-09-26 | Q1746575006 | ND |
| 2018-09-13 | Q1836570001 | ND |
| 2018-09-25 | Q1838256005 | ND |
| 2019-09-26 | Q1969362002 | ND |
| 2019-09-27 | Q1970279005 | ND |