1,2,4-Trichlorobenzene
City of West
NOTE: City of West purchases water from City of Waco which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Waco.
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 | 3 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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: City of West purchases water from City of Waco which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Waco.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-19 | AE33959 | ND |
| 2018-07-19 | AE33981 | ND |
| 2019-07-23 | AE75565 | ND |
| 2019-07-23 | AE75567 | ND |
| 2020-02-05 | AE97085 | ND |
| 2020-08-04 | AF21834 | ND |
| 2020-08-04 | AF21836 | ND |
| 2021-07-21 | AF62957 | ND |
| 2021-07-21 | AF62959 | ND |
| 2022-07-06 | AG03334 | ND |
| 2022-07-06 | AG03338 | ND |
| 2023-08-02 | AG51088 | ND |
| 2023-08-02 | AG51114 | ND |