1,2,4-Trichlorobenzene
Lone Star Public 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 | 2 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 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 |
---|---|---|
2014-04-10 | AC50150 | ND |
2014-06-05 | AC56101 | ND |
2015-03-18 | AC85015 | ND |
2015-03-18 | AC85019 | ND |
2015-04-22 | AC89236 | ND |
2016-06-02 | AD39187 | ND |
2016-06-02 | AD39193 | ND |
2017-09-07 | AD95164 | ND |
2017-09-07 | AD95162 | ND |
2018-06-28 | AE31997 | ND |
2018-06-28 | AE32003 | ND |
2019-11-05 | AE88484 | ND |
2019-11-05 | AE88468 | ND |