1,2,4-Trichlorobenzene
Myoma Dunes 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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-11-19 | CA3310051_007_007-201811191011 | ND |
| 2018-11-19 | CA3310051_008_008-201811191033 | ND |
| 2019-11-18 | CA3310051_011_011-201911180951 | ND |
| 2019-11-22 | CA3310051_010_010-201911220939 | ND |
| 2020-08-24 | CA3310051_009_009-202008241030 | ND |
| 2021-08-23 | CA3310051_008_008-202108230835 | ND |
| 2021-08-23 | CA3310051_007_007-202108230903 | ND |
| 2022-08-19 | CA3310051_011_011-202208190752 | ND |
| 2022-08-19 | CA3310051_010_010-202208190715 | ND |
| 2023-08-22 | CA3310051_009_009-202308220650 | ND |