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 |
|---|---|---|---|---|
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-04-11 | 39073401 | ND |
| 2018-04-11 | 39072901 | ND |
| 2018-04-11 | 39074201 | ND |
| 2018-04-11 | 39073001 | ND |
| 2019-04-08 | 43660501 | ND |
| 2019-04-08 | 43660601 | ND |
| 2019-04-08 | 43659301 | ND |
| 2019-04-23 | 43659401 | ND |
| 2020-04-02 | 22016193.00 | ND |
| 2020-04-02 | 22016077.00 | ND |
| 2020-04-02 | 22016149.00 | ND |
| 2020-04-02 | 22016172.00 | ND |
| 2020-04-02 | 22016128.00 | ND |
| 2021-04-01 | 24241266.00 | ND |
| 2021-04-01 | 24241287.00 | ND |
| 2021-04-01 | 24241310.00 | ND |
| 2021-08-05 | 25016531.00 | ND |
| 2021-10-14 | 25398544.00 | ND |
| 2021-11-11 | 25582456.00 | ND |
| 2022-02-09 | 26111852.00 | ND |
| 2022-04-14 | 26458192.00 | ND |
| 2022-04-14 | 26458179.00 | ND |
| 2022-04-14 | 26458215.00 | ND |
| 2022-05-12 | 26641730.00 | ND |
| 2023-04-19 | 28695815.00 | ND |
| 2023-04-19 | 28695883.00 | ND |
| 2023-04-19 | 28695794.00 | ND |
| 2023-04-19 | 28695836.00 | ND |
| 2023-04-19 | 28695857.00 | ND |