1,2,4-Trichlorobenzene
Kennett Square Municipal Water Works
NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by Chester Water Authority.
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 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
NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by Chester Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-09 | 2287664001 | ND |
| 2018-05-15 | 8012319-01 | ND |
| 2018-07-12 | 8020049-01 | ND |
| 2019-07-10 | 3044796001 | ND |
| 2020-02-03 | 21499835.00 | ND |
| 2020-05-01 | 22019648.00 | ND |
| 2020-07-01 | 22412566.00 | ND |
| 2021-04-09 | 24244237.00 | ND |
| 2021-07-28 | 24825579.00 | ND |
| 2022-04-29 | 26461072.00 | ND |
| 2022-08-09 | 27230357.00 | ND |
| 2022-11-08 | 27819897.00 | ND |
| 2023-07-12 | 29299086.00 | ND |
| 2023-11-08 | 30068032.00 | ND |
| 2023-11-15 | 30068573.00 | ND |