1,2,4-Trichlorobenzene
Thirsty Water Corporation
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 | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-02-03 | 039366.001 | ND |
| 2015-01-26 | 052805.002 | ND |
| 2016-03-29 | SDWA-1015520-00 | ND |
| 2016-09-26 | SDWA-1072981-00 | ND |
| 2016-12-05 | SDWA-1106683-00 | ND |
| 2017-03-14 | SDWA-1136514-00 | ND |
| 2017-04-24 | SDWA-1150929-00 | ND |
| 2017-09-11 | SDWA-1191904-00 | ND |
| 2017-11-27 | SDWA-1214342-00 | ND |
| 2018-01-16 | SDWA-1228181-00 | ND |
| 2018-03-12 | SDWA-1244308-00 | ND |
| 2019-01-29 | SDWA-1340722-00 | ND |