p-Dichlorobenzene
Metropolitan Water District of So. Cal.
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 | 5 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2014-10-07 | 4412-026-1000 | ND |
| 2014-10-07 | 4412-020-1120 | ND |
| 2014-10-07 | 4412-013-1020 | ND |
| 2014-10-07 | 4412-005-0840 | ND |
| 2014-10-07 | 4412-003-0819 | ND |
| 2015-01-06 | 4412-020-1055 | ND |
| 2015-01-06 | 4412-026-0820 | ND |
| 2015-01-06 | 4412-003-0810 | ND |
| 2015-01-06 | 4412-013-1015 | ND |
| 2015-01-06 | 4412-005-0845 | ND |
| 2016-04-04 | 4412-003-1015 | ND |
| 2016-04-04 | 4412-026-0920 | ND |
| 2016-04-04 | 4412-005-0730 | ND |
| 2016-04-04 | 4412-020-1030 | ND |
| 2016-04-04 | 4412-013-1020 | ND |
| 2017-07-31 | 4412-003-1000 | ND |
| 2017-07-31 | 4412-005-0905 | ND |
| 2017-07-31 | 4412-013-0900 | ND |
| 2017-08-01 | 4412-026-1110 | ND |
| 2017-08-02 | 4412-020-0835 | ND |
| 2018-10-02 | 4412-013-1010 | ND |
| 2018-10-02 | 4412-020-1020 | ND |
| 2018-10-02 | 4412-003-1046 | ND |
| 2018-10-02 | 4412-005-0742 | ND |
| 2018-10-02 | 4412-026-0950 | ND |
| 2019-01-02 | 4412-003-0910 | ND |
| 2019-01-02 | 4412-020-1040 | ND |
| 2019-01-02 | 4412-026-0737 | ND |
| 2019-01-02 | 4412-005-0715 | ND |
| 2019-01-14 | 4412-013-0825 | ND |
| 2019-10-21 | 9588-005-0745 | ND |
| 2019-10-22 | 9588-020-1315 | ND |