1,2,4-Trichlorobenzene
Trumbauersville Municipal Waterworks
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 | 1 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|---|
| 2018-12-23 | 3007776001 | ND |
| 2019-03-31 | 3025257001 | ND |
| 2019-06-30 | 3043361001 | ND |
| 2019-09-18 | 3059109001 | ND |
| 2019-12-31 | 3078526002 | ND |
| 2020-03-31 | 21832491.00 | ND |
| 2020-12-29 | 23522837.00 | ND |
| 2021-09-30 | 25204800.00 | ND |
| 2021-09-30 | 25204823.00 | ND |
| 2022-12-29 | 27984498.00 | ND |
| 2023-05-18 | 29093083.00 | ND |
| 2023-05-26 | 29093085.00 | ND |
| 2023-05-26 | 29093084.00 | ND |
| 2023-08-17 | 29481166.00 | ND |
| 2023-08-23 | 29481167.00 | ND |
| 2023-10-25 | 29872569.00 | ND |
| 2023-11-10 | 30057791.00 | ND |