1,2,4-Trichlorobenzene
North Texas Municipal Water District Wylie Water Treatment Plant
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 | 2 | 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 |
|---|---|---|
| 2014-08-01 | Q1433373008 | ND |
| 2014-08-01 | Q1433373006 | ND |
| 2014-08-01 | Q1433373004 | ND |
| 2015-09-18 | Q1536877003 | ND |
| 2015-09-18 | Q1536877005 | ND |
| 2015-09-18 | Q1536877001 | ND |
| 2016-09-06 | Q1635670001 | ND |
| 2016-09-06 | Q1635670006 | ND |
| 2016-09-06 | Q1635670004 | ND |
| 2017-09-26 | Q1746572004 | ND |
| 2017-09-26 | Q1746572002 | ND |
| 2018-09-17 | Q1836833016 | ND |
| 2018-09-17 | Q1836833014 | ND |
| 2018-09-17 | Q1836833012 | ND |
| 2019-01-15 | Q1902044002 | ND |
| 2019-08-02 | Q1950721001 | ND |
| 2019-08-02 | Q1950721003 | ND |