1,2,4-Trichlorobenzene
East Cocalico Township
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 | 16 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 16 | 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 |
|---|---|---|
| 2018-04-27 | 8045051-02RE | ND |
| 2018-04-27 | 8045051-08 | ND |
| 2018-04-27 | 8045051-11 | ND |
| 2018-04-27 | 8045051-10 | ND |
| 2019-04-29 | 9041601-06 | ND |
| 2019-04-29 | 9041601-08 | ND |
| 2019-04-29 | 9041601-09 | ND |
| 2019-04-29 | 9041601-02 | ND |
| 2020-05-01 | 22369761.00 | ND |
| 2020-05-01 | 22369740.00 | ND |
| 2020-05-01 | 22369717.00 | ND |
| 2020-05-01 | 22369694.00 | ND |
| 2020-05-01 | 22369671.00 | ND |
| 2020-05-01 | 22369648.00 | ND |
| 2020-05-01 | 22369625.00 | ND |
| 2020-05-01 | 22369602.00 | ND |
| 2020-05-01 | 22369579.00 | ND |
| 2020-05-01 | 22369534.00 | ND |
| 2020-05-01 | 22369556.00 | ND |
| 2020-05-11 | 22369502.00 | ND |
| 2020-09-25 | 23142973.00 | ND |
| 2020-10-22 | 23322762.00 | ND |
| 2020-10-29 | 23322720.00 | ND |
| 2020-11-20 | 23497276.00 | ND |
| 2021-03-10 | 24203655.00 | ND |
| 2021-04-08 | 24393847.00 | ND |
| 2021-04-08 | 24393826.00 | ND |
| 2021-04-08 | 24393797.00 | ND |
| 2021-04-08 | 24393874.00 | ND |
| 2021-07-14 | 24979171.00 | ND |
| 2022-04-08 | 26607716.00 | ND |
| 2022-04-08 | 26607761.00 | ND |
| 2022-04-08 | 26607740.00 | ND |
| 2022-04-08 | 26607689.00 | ND |
| 2023-01-11 | 28310388.00 | ND |
| 2023-01-11 | 28310361.00 | ND |
| 2023-01-11 | 28310433.00 | ND |
| 2023-01-11 | 28310412.00 | ND |
| 2023-04-12 | 28858472.00 | ND |
| 2023-04-12 | 28858474.00 | ND |
| 2023-04-12 | 28858471.00 | ND |
| 2023-04-12 | 28858473.00 | ND |
| 2023-07-12 | 29454828.00 | ND |
| 2023-09-13 | 29847883.00 | ND |
| 2023-09-13 | 29847885.00 | ND |
| 2023-09-13 | 29847888.00 | ND |
| 2023-09-13 | 29847886.00 | ND |
| 2023-09-13 | 29847887.00 | ND |
| 2023-09-13 | 29847884.00 | ND |
| 2023-10-25 | 30031825.00 | ND |