1,2,4-Trichlorobenzene
Grissom Farm 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 | 1 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-10-06 | C412066-01 | ND |
| 2016-12-08 | CZ16827-01 | ND |
| 2017-01-13 | CZ18798-01 | ND |
| 2017-04-10 | CA02942-01 | ND |
| 2017-07-07 | CA07743-01 | ND |
| 2017-10-10 | CA13252-01 | ND |
| 2017-10-10 | CA13255-01 | ND |
| 2018-01-24 | CA18287-01 | ND |
| 2018-04-09 | CB03354-01 | ND |
| 2018-07-17 | CB08156-01 | ND |
| 2018-10-16 | CB14344-01 | ND |
| 2019-02-05 | CB18773-01 | ND |
| 2019-04-10 | CC04158-01 | ND |
| 2019-07-30 | CC10583-01 | ND |
| 2019-10-15 | CC15834-01 | ND |