1,2,4-Trichlorobenzene
Swta - Main 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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 7 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 9 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-01-28 | 14013332-001 | ND |
| 2014-01-28 | 14013329-001 | ND |
| 2014-01-28 | 14013341-001 | ND |
| 2014-01-28 | 14013340-001 | ND |
| 2014-01-28 | 14013343-001 | ND |
| 2014-01-28 | 14013335-001 | ND |
| 2014-01-28 | 14013345-001 | ND |
| 2015-08-11 | 13172039 | ND |
| 2015-08-11 | 13172019 | ND |
| 2015-08-11 | 13172089 | ND |
| 2015-10-16 | 13426057 | ND |
| 2015-11-04 | 13549430 | ND |
| 2016-12-22 | 15415738 | ND |
| 2016-12-22 | 15415717 | ND |
| 2016-12-22 | 15415675 | ND |
| 2016-12-22 | 15415696 | ND |
| 2017-04-18 | 15985812 | ND |
| 2017-04-18 | 15985900 | ND |
| 2017-04-18 | 15986052 | ND |
| 2017-04-18 | 15985864 | ND |
| 2017-04-18 | 15985759 | ND |
| 2017-04-18 | 15986001 | ND |
| 2017-04-18 | 15985950 | ND |
| 2017-09-19 | 16772887 | ND |
| 2017-10-03 | 16922832 | ND |
| 2018-01-09 | 8012152-02 | ND |
| 2018-04-10 | 8042613-02 | ND |
| 2018-04-10 | 8042612-01 | ND |
| 2018-04-10 | 8042612-02 | ND |
| 2018-04-10 | 8042612-03 | ND |
| 2018-04-10 | 8042612-04 | ND |
| 2019-04-23 | 9044997-05 | ND |
| 2019-04-23 | 9044997-01 | ND |
| 2019-04-23 | 9044997-02 | ND |
| 2019-04-23 | 9044997-03 | ND |
| 2019-04-23 | 9044997-04 | ND |