1,2,4-Trichlorobenzene
Gonzales County Water Supply Corporation
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
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 | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2014-02-20 | AC43865 | ND |
2014-06-05 | AC56103 | ND |
2014-09-05 | AC66060 | ND |
2015-02-04 | AC79291 | ND |
2015-02-04 | AC79275 | ND |
2015-02-04 | AC79273 | ND |
2015-02-04 | AC79281 | ND |
2015-07-22 | AD00644 | ND |
2016-01-19 | AD18620 | ND |
2016-01-19 | AD18652 | ND |
2016-09-09 | AD49182 | ND |
2017-03-13 | AD75502 | ND |
2017-03-13 | AD75498 | ND |
2017-03-13 | AD75500 | ND |
2018-02-08 | AE13037 | ND |
2018-03-12 | AE17864 | ND |
2018-03-12 | AE17882 | ND |
2018-03-12 | AE17842 | ND |
2019-01-09 | AE49237 | ND |
2019-01-09 | AE49241 | ND |