1,2,4-Trichlorobenzene
Sandwich
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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-04-21 | 1404C24-001A | ND |
| 2015-10-19 | 1510G88-001A | ND |
| 2016-04-21 | 6043467-01 | ND |
| 2016-07-27 | 6074594-01 | ND |
| 2016-07-27 | 6074594-02 | ND |
| 2017-04-05 | 7042225-01 | ND |
| 2017-07-26 | 7075326-01 | ND |
| 2018-04-17 | 8043700-02 | ND |
| 2018-07-17 | 8073837-01 | ND |
| 2019-08-08 | 9081959-01 | ND |
| 2019-08-08 | 9081959-02 | ND |
| 2019-10-17 | 9103869-01 | ND |