1,2,4-Trichlorobenzene
Desert Sky Dwid
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-18 | 201807190397V | ND |
| 2018-07-18 | 201807190398V | ND |
| 2018-12-04 | 201812050077V | ND |
| 2018-12-18 | 550-115254-1 | ND |
| 2019-02-20 | 201902210316V | ND |
| 2019-02-20 | 201902210317V | ND |
| 2019-04-09 | 201904100042V | ND |
| 2019-05-14 | 201905140180V | ND |
| 2020-12-22 | 20L2598-01VOC | ND |
| 2020-12-29 | 20L2983-02 | ND |
| 2021-10-05 | 202110060114V | ND |
| 2021-10-05 | 202110060115V | ND |
| 2022-10-12 | 380-24177-1 | ND |
| 2022-10-12 | 380-24177-2 | ND |
| 2023-10-05 | 380-65867-1 | ND |
| 2023-10-05 | 380-65867-2 | ND |