1,2,4-Trichlorobenzene
St. George Fire District 1
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-03-17 | 1403-04597-001 | ND |
2014-06-11 | 1406-10952-001 | ND |
2014-09-16 | 1409-19160-001 | ND |
2014-12-18 | BH56691 | ND |
2015-03-18 | 1503-04692-001 | ND |
2015-06-22 | 1506-12183-001 | ND |
2015-09-24 | 1509-20810-001 | ND |
2015-12-08 | 1512-26141-001 | ND |
2016-08-17 | 1608-18319-001 | ND |
2016-11-09 | 1611-25836-001 | ND |
2017-09-19 | 1709-22348-001 | ND |
2018-09-17 | 1809-23821-001 | ND |