p-Dichlorobenzene
Dalhart Municipal Water System
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 | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-03-05 | Q1407152006 | ND |
| 2014-06-10 | Q1420648004 | ND |
| 2014-08-05 | Q1434094002 | ND |
| 2014-10-14 | Q1452308002 | ND |
| 2015-03-03 | Q1508194003 | ND |
| 2015-05-13 | Q1517580003 | ND |
| 2015-07-20 | Q1528029001 | ND |
| 2015-11-17 | Q1545218002 | ND |
| 2016-03-08 | Q1609643002 | ND |
| 2016-03-29 | AD30920 | ND |
| 2016-06-07 | Q1623457001 | ND |
| 2016-07-19 | Q1629667001 | ND |
| 2016-10-26 | Q1645666002 | ND |
| 2017-01-23 | Q1703238002 | ND |
| 2017-04-19 | Q1716126002 | ND |
| 2017-08-01 | Q1731742002 | ND |
| 2017-10-26 | Q1755087001 | ND |
| 2018-01-24 | Q1803105002 | ND |
| 2018-04-25 | Q1816869002 | ND |
| 2018-08-07 | Q1831627002 | ND |
| 2018-10-23 | Q1842356001 | ND |
| 2019-01-30 | Q1904802002 | ND |
| 2019-04-16 | Q1915219002 | ND |
| 2019-07-30 | Q1948990001 | ND |
| 2019-10-23 | Q1973428001 | ND |