1,2,4-Trichlorobenzene
Watchtower Bible Tract Society
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 | 7 | 0 | ND |
| 2015 | ND | 7 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-07-09 | 296535-02POCS | ND |
| 2014-07-09 | 296534-02 POCS | ND |
| 2014-07-09 | 296535-06POC | ND |
| 2014-07-09 | 296534-04POCS | ND |
| 2014-07-09 | 296535-08POCS | ND |
| 2014-07-09 | 296535-04POCS | ND |
| 2014-07-09 | 296534-06POCS | ND |
| 2015-07-23 | 307161-04POCS | ND |
| 2015-07-23 | 307162-06 | ND |
| 2015-07-23 | 307161-02POCS | ND |
| 2015-07-23 | 307161-06 | ND |
| 2015-07-23 | 307162-04POCS | ND |
| 2015-07-23 | 307162-08POCS | ND |
| 2015-07-23 | 307162-02PIOCS | ND |
| 2016-07-20 | 317745-02POCS | ND |
| 2016-07-20 | 317744-04POCS | ND |
| 2016-07-20 | 317744-02POCS | ND |
| 2016-07-20 | 317745-06POCS | ND |
| 2016-07-20 | 317744-06POCS | ND |
| 2016-07-20 | 317744-08POCS | ND |
| 2016-07-20 | 317745-04POCS | ND |
| 2018-07-31 | 420-140368-1POCS | ND |
| 2019-08-08 | 420-158308-4POCS | ND |
| 2019-08-08 | 420-158308-1POCS | ND |