1,2,4-Trichlorobenzene
Shangri La Subdivision
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-11-12 | Q1845459020 | ND |
| 2018-11-12 | Q1845459022 | ND |
| 2018-11-12 | Q1845459008 | ND |
| 2019-06-19 | Q1937663005 | ND |
| 2019-06-19 | Q1937663007 | ND |
| 2019-06-19 | Q1937663009 | ND |
| 2020-06-25 | Q2025622001 | ND |
| 2020-06-25 | Q2025622003 | ND |
| 2020-06-25 | Q2025622005 | ND |
| 2021-06-16 | Q2115844002 | ND |
| 2021-06-16 | Q2115844006 | ND |
| 2021-06-16 | Q2115844004 | ND |
| 2022-03-22 | Q2209179008 | ND |
| 2022-03-22 | Q2209179010 | ND |
| 2022-03-22 | Q2209179012 | ND |
| 2023-02-21 | Q2307017001 | ND |
| 2023-12-04 | Q2351630001 | ND |
| 2023-12-04 | Q2351630003 | ND |