1,2,4-Trichlorobenzene
Newtown Artesian Water Company
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 | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-07-26 | L7056979-1 | ND |
| 2018-07-26 | L7056979-2 | ND |
| 2018-07-26 | L7056979-3 | ND |
| 2019-06-17 | 9008627-01 | ND |
| 2019-06-17 | 9008628-01 | ND |
| 2020-05-01 | 22195046.00 | ND |
| 2020-05-01 | 22195067.00 | ND |
| 2020-05-01 | 22195088.00 | ND |
| 2020-05-08 | 22195109.00 | ND |
| 2020-05-08 | 22195130.00 | ND |
| 2021-04-05 | 24041229.00 | ND |
| 2021-04-06 | 24041250.00 | ND |
| 2022-04-05 | 26444741.00 | ND |
| 2023-04-03 | 28502934.00 | ND |
| 2023-04-04 | 28681638.00 | ND |