p-Dichlorobenzene
Golden State Water Company - Barstow
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 15 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 14 | 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 |
|---|---|---|
| 2014-02-11 | 2706-034-0749 | ND |
| 2014-02-11 | 2706-033-0716 | ND |
| 2014-02-11 | 2706-019-0801 | ND |
| 2014-02-11 | 2706-017-0732 | ND |
| 2014-02-11 | 2706-014-0700 | ND |
| 2014-02-12 | 2706-013-0843 | ND |
| 2014-02-12 | 2706-008-0804 | ND |
| 2014-02-12 | 2706-009-0747 | ND |
| 2014-02-12 | 2706-011-0730 | ND |
| 2014-02-12 | 2706-012-0717 | ND |
| 2014-02-18 | 2706-020-0936 | ND |
| 2014-02-18 | 2706-021-0911 | ND |
| 2014-02-18 | 2706-003-0750 | ND |
| 2014-02-18 | 2706-002-0817 | ND |
| 2014-02-18 | 2706-001-0841 | ND |
| 2017-02-21 | 9590-018-1409 | ND |
| 2018-05-14 | 9590-002-1031 | ND |
| 2018-05-14 | 9590-033-0841 | ND |
| 2018-05-14 | 9590-021-1003 | ND |
| 2018-05-14 | 9590-017-1330 | ND |
| 2018-05-14 | 9590-014-0827 | ND |
| 2018-05-14 | 9590-013-1245 | ND |
| 2018-05-14 | 9590-012-1259 | ND |
| 2018-05-14 | 9590-008-1315 | ND |
| 2018-05-14 | 9590-005-0723 | ND |
| 2018-05-14 | 9590-003-1040 | ND |
| 2018-05-14 | 9590-001-1025 | ND |
| 2018-05-30 | 9590-034-1200 | ND |
| 2018-05-30 | 9590-020-1050 | ND |
| 2018-05-30 | 9590-019-1225 | ND |
| 2019-04-15 | 9590-011-1303 | ND |
| 2019-08-05 | 9590-009-1155 | ND |