1,2,4-Trichlorobenzene
Weatherford
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
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 | 8 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 8 | 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 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene 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 hormone disruption.
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-21 | 038699.002 | ND |
| 2014-01-21 | 038699.001 | ND |
| 2014-04-15 | 042218.002 | ND |
| 2014-04-15 | 042218.001 | ND |
| 2014-07-16 | 045612.002 | ND |
| 2014-07-16 | 045612.001 | ND |
| 2014-10-15 | 049105.002 | ND |
| 2014-10-15 | 049105.001 | ND |
| 2015-01-08 | 052222.002 | ND |
| 2015-01-08 | 052222.001 | ND |
| 2015-05-18 | 054870.002 | ND |
| 2015-05-18 | 054870.001 | ND |
| 2015-07-27 | 059251.004 | ND |
| 2015-07-27 | 059251.003 | ND |
| 2015-10-07 | 063874.002 | ND |
| 2015-10-07 | 063874.001 | ND |
| 2016-02-23 | 068161.002 | ND |
| 2016-02-23 | 068161.001 | ND |
| 2016-06-07 | SDWA-1038326-00 | ND |
| 2016-06-07 | SDWA-1038321-00 | ND |
| 2016-07-27 | SDWA-1051026-00 | ND |
| 2016-07-27 | SDWA-1051022-00 | ND |
| 2016-11-28 | SDWA-1101468-00 | ND |
| 2016-11-28 | SDWA-1101466-00 | ND |
| 2017-12-27 | SDWA-1226062-00 | ND |
| 2017-12-27 | SDWA-1226060-00 | ND |
| 2018-02-13 | SDWA-1237680-00 | ND |
| 2018-02-13 | SDWA-1237675-00 | ND |
| 2019-02-13 | SDWA-1350503-00 | ND |
| 2019-02-13 | SDWA-1350508-00 | ND |