1,2,4-Trichlorobenzene
Pennsylvania American Royersford
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 | 9 | 0 | ND |
| 2015 | ND | 10 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 5 | 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 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 |
|---|---|---|
| 2014-04-02 | 25340001 | ND |
| 2014-04-02 | 25341501 | ND |
| 2014-04-03 | 25340301 | ND |
| 2014-04-03 | 25340801 | ND |
| 2014-06-25 | 25340501 | ND |
| 2014-08-06 | 26818001 | ND |
| 2014-08-06 | 26818101 | ND |
| 2014-10-06 | 27103901 | ND |
| 2014-10-06 | 27104001 | ND |
| 2015-01-08 | 12283042 | ND |
| 2015-01-08 | 12283021 | ND |
| 2015-04-09 | 12628862 | ND |
| 2015-04-09 | 12628927 | ND |
| 2015-04-09 | 12628883 | ND |
| 2015-04-09 | 12628904 | ND |
| 2015-07-13 | 13008743 | ND |
| 2015-09-16 | 13260269 | ND |
| 2015-10-06 | 13385309 | ND |
| 2015-10-06 | 13385330 | ND |
| 2016-04-05 | 14097845 | ND |
| 2016-04-05 | 14097866 | ND |
| 2016-04-05 | 14097824 | ND |
| 2016-04-05 | 14097889 | ND |
| 2017-04-11 | 15931657 | ND |
| 2017-04-11 | 15931613 | ND |
| 2017-04-11 | 15931592 | ND |
| 2017-04-11 | 15931571 | ND |
| 2017-04-11 | 15931634 | ND |
| 2018-04-11 | 39073401 | ND |
| 2018-04-11 | 39072901 | ND |
| 2018-04-11 | 39074201 | ND |
| 2018-04-11 | 39073001 | ND |
| 2019-04-08 | 43659301 | ND |
| 2019-04-08 | 43660501 | ND |
| 2019-04-08 | 43660601 | ND |
| 2019-04-23 | 43659401 | ND |