1,2,4-Trichlorobenzene
Altavista, Town 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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-10-01 | E140900867 | ND |
| 2015-10-01 | 00281-REI CONSUL | ND |
| 2016-10-11 | 16101205-14A | ND |
| 2016-10-11 | 16101205-15A | ND |
| 2016-10-11 | 16101205-16A | ND |
| 2017-11-14 | 17112161-10A | ND |
| 2018-10-16 | 18102190-04A | ND |
| 2019-10-14 | 734664003 | ND |
| 2019-10-14 | 734664004 | ND |
| 2019-10-14 | 734664006 | ND |