1,2,4-Trichlorobenzene
Brewster Village
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 | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 6 | 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 |
|---|---|---|
| 2014-01-13 | 420-74006-2POC | ND |
| 2014-04-02 | 420-76427-2 | ND |
| 2014-07-14 | 420-79936-3 | ND |
| 2014-10-21 | 420-83444-2POCS | ND |
| 2015-01-09 | 420-86213-1POCS | ND |
| 2015-04-16 | 420-89141-1POCS | ND |
| 2015-04-16 | 420-89141-2 | ND |
| 2015-07-08 | 420-92500-1POCS | ND |
| 2016-01-05 | 420-99275-1 | ND |
| 2016-10-03 | 420-111211-2POCS | ND |
| 2016-10-03 | 420-111211-1POCS | ND |
| 2017-01-04 | 420-115250-3POCS | ND |
| 2017-01-04 | 420-115250-2POCS | ND |
| 2017-04-05 | 420-119066-1POCS | ND |
| 2017-04-05 | 420-119066-2POCS | ND |
| 2017-10-12 | 420-127735-2POCS | ND |
| 2018-01-02 | 420-131297-1POCS | ND |
| 2018-01-02 | 420-131297-2POCS | ND |
| 2018-04-04 | 420-134888-1POCS | ND |
| 2018-07-09 | 420-139308-1POCS | ND |
| 2018-10-01 | 420-143478-4POCS | ND |
| 2018-10-01 | 420-143478-5POCS | ND |
| 2019-01-07 | 420-147820-2POCS | ND |
| 2019-04-01 | 420-151634-3POCS | ND |
| 2019-07-01 | 420-156238-2POCS | ND |
| 2019-10-08 | 420-161523-2 | ND |