1,2,4-Trichlorobenzene
Lauradale S/d
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 |
|---|---|---|---|---|
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-09-30 | 37729_14-29715 | ND |
| 2014-12-29 | 37729_14-38988 | ND |
| 2015-03-29 | ND | |
| 2015-06-29 | ND | |
| 2015-09-30 | ND | |
| 2016-12-27 | 37729_16-44918 | ND |
| 2016-12-27 | 37729_16-44920 | ND |
| 2016-12-27 | 37729_16-44921 | ND |
| 2017-12-21 | 37729_17-48592 | ND |
| 2018-12-30 | 37729_18-54333 | ND |
| 2019-12-30 | 37729_19-55334 | ND |
| 2019-12-30 | 37729_19-55338 | ND |
| 2019-12-31 | 37729_19-55412 | ND |