1,2,4-Trichlorobenzene
City of Pampa
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 | 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 |
|---|---|---|
| 2014-06-25 | Q1423571003 | ND |
| 2014-06-25 | Q1423571002 | ND |
| 2015-05-26 | Q1519314008 | ND |
| 2015-05-26 | Q1519314011 | ND |
| 2015-12-01 | Q1547330001 | ND |
| 2016-03-15 | Q1610754008 | ND |
| 2016-03-15 | Q1610754006 | ND |
| 2016-03-15 | Q1610754001 | ND |
| 2017-01-31 | Q1704451002 | ND |
| 2017-04-26 | Q1716946013 | ND |
| 2017-04-26 | Q1716946011 | ND |
| 2018-02-05 | Q1804320013 | ND |
| 2018-02-05 | Q1804320008 | ND |
| 2018-04-18 | Q1816136004 | ND |
| 2019-02-13 | Q1906860003 | ND |
| 2019-02-13 | Q1906860005 | ND |
| 2019-05-15 | Q1925442002 | ND |