1,2,4-Trichlorobenzene
City of Corcoran
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 | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-03-25 | 5810-018-1106 | ND |
| 2014-03-25 | 5810-026-1045 | ND |
| 2014-06-16 | 5810-002-0800 | ND |
| 2014-12-22 | 5810-019-0840 | ND |
| 2016-11-10 | 5810-001-0915 | ND |
| 2016-12-14 | 5810-003-0740 | ND |
| 2016-12-14 | 5810-019-0830 | ND |
| 2016-12-28 | 5810-016-0750 | ND |
| 2017-02-13 | 5810-026-0850 | ND |
| 2017-04-19 | 5810-002-0950 | ND |
| 2017-04-19 | 5810-018-0900 | ND |
| 2017-09-06 | 5810-015-0855 | ND |
| 2018-05-18 | 5810-019-1400 | ND |
| 2019-10-09 | 5810-003-0900 | ND |
| 2019-10-14 | 5810-016-0900 | ND |