1,2,4-Trichlorobenzene
Aqua Pa Uwchlan
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 | 6 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2014-02-06 | AE22430 | ND |
| 2014-02-14 | AE22387 | ND |
| 2014-02-14 | AE22385 | ND |
| 2014-02-21 | AE23943 | ND |
| 2014-02-21 | AE23946 | ND |
| 2014-04-23 | AE29861 | ND |
| 2015-02-03 | 12395449 | ND |
| 2015-02-03 | 12395491 | ND |
| 2015-02-03 | 12395512 | ND |
| 2015-02-03 | 12395533 | ND |
| 2015-02-04 | 12395428 | ND |
| 2015-02-04 | 12395470 | ND |
| 2016-01-22 | 13746273 | ND |
| 2016-01-22 | 13746252 | ND |
| 2016-01-22 | 13746210 | ND |
| 2016-01-22 | 13746231 | ND |
| 2016-02-10 | 13864177 | ND |
| 2016-02-10 | 13864198 | ND |
| 2017-03-28 | 15787971 | ND |
| 2017-03-28 | 15787950 | ND |
| 2017-04-19 | 15928757 | ND |
| 2017-04-19 | 15928778 | ND |
| 2017-04-21 | 15928736 | ND |
| 2017-06-21 | 16249801 | ND |
| 2018-01-29 | AF74449 | ND |
| 2018-01-31 | AF73819 | ND |
| 2018-02-26 | AF76934 | ND |
| 2018-02-26 | AF76935 | ND |
| 2018-03-13 | AF77984 | ND |
| 2018-03-13 | AF77985 | ND |
| 2019-03-06 | AG10267 | ND |
| 2019-03-06 | AG10268 | ND |
| 2019-03-06 | AG10266 | ND |
| 2019-03-12 | AG10439 | ND |
| 2019-03-12 | AG10441 | ND |
| 2019-03-27 | AG11746 | ND |
| 2019-11-07 | AG37520 | ND |