1,2,4-Trichlorobenzene
City of Center
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 | 5 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-02-10 | Q1403939004 | ND |
| 2014-06-18 | Q1421946002 | ND |
| 2014-09-17 | Q1445571003 | ND |
| 2014-09-17 | Q1445571005 | ND |
| 2014-11-17 | Q1456397003 | ND |
| 2015-02-12 | Q1505982012 | ND |
| 2015-09-22 | Q1537125002 | ND |
| 2016-02-22 | Q1607423003 | ND |
| 2016-09-23 | Q1640039002 | ND |
| 2017-02-21 | Q1707177001 | ND |
| 2017-08-23 | Q1737790002 | ND |
| 2018-04-30 | Q1817448004 | ND |
| 2018-08-27 | Q1834372003 | ND |
| 2019-05-15 | Q1925671003 | ND |
| 2019-07-17 | Q1946117001 | ND |