p-Dichlorobenzene
Terra Bella Irrigation District - Tbt
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 2 | 0 | ND |
2017 | ND | 8 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 8 | 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 |
---|---|---|
2014-05-07 | 5810-027-0930 | ND |
2014-05-19 | 5810-028-1150 | ND |
2016-02-05 | 5810-004-1150 | ND |
2016-08-25 | 5810-004-1220 | ND |
2017-09-06 | 5810-013-1230 | ND |
2017-09-06 | 5810-002-1205 | ND |
2017-09-06 | 5810-025-1315 | ND |
2017-09-06 | 5810-020-1155 | ND |
2017-09-06 | 5810-016-1149 | ND |
2017-09-06 | 5810-009-1215 | ND |
2017-09-06 | 5810-014-1251 | ND |
2017-09-07 | 5810-024-1120 | ND |
2018-09-24 | 5810-033-1510 | ND |
2018-09-24 | 5810-027-1445 | ND |
2018-12-27 | 5810-033-1230 | ND |
2018-12-27 | 5810-027-1250 | ND |
2019-02-26 | 5810-027-1318 | ND |
2019-02-26 | 5810-033-1300 | ND |
2019-05-10 | 5810-027-1310 | ND |
2019-05-10 | 5810-033-1328 | ND |
2019-08-29 | 5810-027-1340 | ND |
2019-08-29 | 5810-033-1328 | ND |
2019-11-21 | 5810-027-1338 | ND |
2019-11-21 | 5810-033-1315 | ND |