1,2,4-Trichlorobenzene
Lakehaven Utility District
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 | 10 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-05-15 | ND | |
| 2018-06-19 | ND | |
| 2018-07-10 | ND | |
| 2018-07-10 | ND | |
| 2019-06-05 | ND | |
| 2019-06-05 | ND | |
| 2019-06-12 | ND | |
| 2019-06-12 | ND | |
| 2019-07-23 | ND | |
| 2019-07-31 | ND | |
| 2019-08-27 | ND | |
| 2019-09-03 | ND | |
| 2019-09-04 | ND | |
| 2019-10-30 | ND | |
| 2021-05-25 | 4122783 | ND |
| 2021-05-25 | 4122783 | ND |
| 2021-05-25 | 4122783 | ND |
| 2021-07-13 | 4149400 | ND |
| 2021-07-13 | 4149400 | ND |
| 2021-09-14 | 4178936 | ND |
| 2022-01-25 | 4234480 | ND |
| 2022-01-25 | 4248102 | ND |