1,2,4-Trichlorobenzene
Greene County Regional Water System
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 | 3 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-05-21 | 8030-052114-E04V | ND |
| 2014-09-04 | 8030-090414-E12V | ND |
| 2014-09-04 | 8030-090414-E09V | ND |
| 2015-05-13 | ND | |
| 2015-05-13 | ND | |
| 2015-05-13 | ND | |
| 2015-06-04 | ND | |
| 2015-06-04 | ND | |
| 2016-06-07 | 8030-060716-E09V | ND |
| 2016-06-07 | 8030-060716-E12V | ND |
| 2016-09-01 | 8030-090116-E05V | ND |
| 2016-09-01 | 8030-090116-E07V | ND |
| 2016-09-09 | 8030-090916-E03V | ND |
| 2017-05-18 | 8030-051817-E04V | ND |
| 2017-09-01 | 8030-090117-E09V | ND |
| 2017-09-01 | 8030-090117-E12V | ND |
| 2018-06-06 | 8030-060618-E08V | ND |
| 2018-06-06 | 8030-060618-E10V | ND |
| 2018-06-06 | 8030-060618-E11V | ND |
| 2018-09-07 | 8030-090718-E09V | ND |
| 2018-09-07 | 8030-090718-E12V | ND |
| 2019-08-27 | 8030-082719-E05V | ND |
| 2019-08-27 | 8030-082719-E07V | ND |
| 2019-09-23 | 8030-092319-E03V | ND |
| 2019-09-23 | 8030-092319-E09V | ND |
| 2019-09-23 | 8030-092319-E12V | ND |