1,2,4-Trichlorobenzene
Aqua Pa West Chester
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-02-20 | AE24207 | ND |
| 2014-10-09 | AE52330 | ND |
| 2015-02-05 | 12396960 | ND |
| 2015-03-19 | 12510515 | ND |
| 2015-06-03 | 12876144 | ND |
| 2016-01-07 | 13747763 | ND |
| 2016-09-28 | 14900770 | ND |
| 2016-09-28 | 14900749 | ND |
| 2017-06-21 | 16251165 | ND |
| 2017-09-21 | 16720892 | ND |
| 2017-12-20 | 17155892 | ND |
| 2018-01-29 | AF74444 | ND |
| 2018-02-22 | AF77012 | ND |
| 2018-03-22 | AF78070 | ND |
| 2019-03-06 | AG10280 | ND |
| 2019-03-06 | AG10262 | ND |
| 2019-03-06 | AG10272 | ND |
| 2019-03-07 | AG10725 | ND |