1,2,4-Trichlorobenzene
Averydale Mutual 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 | 5 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-02-06 | CA1910023_004_004-201802061330 | ND |
| 2018-02-20 | CA1910023_004_004-201802201400 | ND |
| 2018-08-21 | CA1910023_001_001-201808211318 | ND |
| 2018-08-21 | CA1910023_006_006-201808211324 | ND |
| 2018-08-21 | CA1910023_003_003-201808211241 | ND |
| 2019-02-19 | CA1910023_004_004-201902191302 | ND |
| 2019-08-20 | CA1910023_006_006-201908201426 | ND |
| 2019-08-20 | CA1910023_003_003-201908201400 | ND |
| 2019-08-20 | CA1910023_001_001-201908201422 | ND |
| 2020-02-18 | CA1910023_004_004-202002181305 | ND |
| 2020-08-18 | CA1910023_003_003-202008181300 | ND |
| 2020-08-18 | CA1910023_006_006-202008181334 | ND |
| 2020-08-18 | CA1910023_001_001-202008181317 | ND |
| 2021-02-16 | CA1910023_004_004-202102161355 | ND |
| 2021-08-17 | CA1910023_001_001-202108171450 | ND |
| 2021-08-17 | CA1910023_006_006-202108171454 | ND |
| 2021-08-17 | CA1910023_003_003-202108171430 | ND |
| 2022-02-22 | CA1910023_004_004-202202221258 | ND |
| 2022-08-16 | CA1910023_006_006-202208161254 | ND |
| 2022-08-16 | CA1910023_003_003-202208161240 | ND |
| 2022-08-16 | CA1910023_001_001-202208161250 | ND |
| 2023-02-21 | CA1910023_004_004-202302211250 | ND |
| 2023-08-15 | CA1910023_001_001-202308151400 | ND |
| 2023-08-15 | CA1910023_003_003-202308151340 | ND |
| 2023-08-15 | CA1910023_006_006-202308151405 | ND |