1,2,4-Trichlorobenzene
West Gregg Special Utility District
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 | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-07-02 | Q1425583001 | ND |
| 2015-04-29 | Q1515717015 | ND |
| 2015-04-29 | Q1515717012 | ND |
| 2015-04-29 | Q1515717011 | ND |
| 2016-10-25 | Q1645489004 | ND |
| 2016-10-25 | Q1645489017 | ND |
| 2016-10-25 | Q1645489001 | ND |
| 2016-10-25 | Q1645489014 | ND |
| 2017-08-09 | Q1734186005 | ND |
| 2017-08-09 | Q1734186003 | ND |
| 2017-08-09 | Q1734186002 | ND |
| 2018-09-13 | Q1836486004 | ND |
| 2018-09-13 | Q1836486002 | ND |
| 2018-12-05 | Q1849734003 | ND |
| 2019-02-14 | Q1906942010 | ND |
| 2019-02-14 | Q1906942006 | ND |
| 2019-03-28 | Q1912650001 | ND |
| 2019-03-28 | Q1912650003 | ND |