1,2,4-Trichlorobenzene
Tuckahoe 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 | 4 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2014-01-15 | 7123-011514-E01V | ND |
| 2016-01-21 | 7123-012116-E02V | ND |
| 2016-04-20 | 7123-042016-E02V | ND |
| 2016-07-27 | 7123-072716-E02V | ND |
| 2016-10-24 | 7123-102416-E02V | ND |
| 2017-01-16 | 7123-011617-E01V | ND |
| 2017-01-16 | 7123-011617-E02V | ND |
| 2017-04-17 | 7123-041717-E02V | ND |
| 2017-07-24 | 7123-072417-E02V | ND |
| 2017-10-25 | 7123-102517-E02V | ND |
| 2018-01-25 | 7123-012518-E02V | ND |
| 2018-07-25 | 7123-072518-E02V | ND |
| 2018-10-03 | 7123-100318-E02V | ND |
| 2019-09-09 | CC09136-01 | ND |
| 2019-10-21 | CC17556-01 | ND |