1,2,4-Trichlorobenzene
Valentine, City of
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 | 6 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2014-03-04 | 278521 | ND |
| 2014-03-04 | 278522 | ND |
| 2014-03-04 | 278520 | ND |
| 2014-03-31 | 279146 | ND |
| 2014-03-31 | 279147 | ND |
| 2014-10-27 | 311068 | ND |
| 2015-01-26 | 343372 | ND |
| 2015-01-26 | 343373 | ND |
| 2015-01-26 | 343374 | ND |
| 2016-02-16 | ND | |
| 2016-02-16 | ND | |
| 2016-02-16 | ND | |
| 2017-01-17 | ND | |
| 2017-01-17 | ND | |
| 2017-01-17 | ND | |
| 2017-03-20 | ND | |
| 2017-03-20 | ND | |
| 2017-12-04 | ND | |
| 2018-01-29 | 530783 | ND |
| 2018-01-29 | 530784 | ND |
| 2018-01-29 | 530785 | ND |
| 2019-02-05 | 592393 | ND |
| 2019-02-05 | 592394 | ND |
| 2019-02-05 | 592395 | ND |