1,2,4-Trichlorobenzene
Harris County MUD 200 Cranbrook
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 | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-05-30 | AC55683 | ND |
| 2014-05-30 | AC55681 | ND |
| 2014-07-24 | AC60877 | ND |
| 2015-01-22 | AC77359 | ND |
| 2015-01-22 | AC77365 | ND |
| 2015-01-22 | AC77363 | ND |
| 2016-02-11 | AD23399 | ND |
| 2016-02-11 | AD23397 | ND |
| 2016-02-11 | AD23409 | ND |
| 2017-02-09 | AD69990 | ND |
| 2017-02-09 | AD69944 | ND |
| 2017-02-09 | AD69988 | ND |
| 2018-02-14 | AE14119 | ND |
| 2018-08-20 | AE37625 | ND |
| 2018-08-20 | AE37619 | ND |
| 2019-02-04 | AE52714 | ND |
| 2019-02-04 | AE52702 | ND |
| 2019-02-04 | AE52696 | ND |