1,2,4-Trichlorobenzene
Rockhouse Mountain
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 | N/A | 0 | 0 | N/A |
2015 | ND | 1 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 2 | 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 |
---|---|---|
2015-12-15 | 1512-01323-001 | ND |
2016-03-16 | 153931.01 | ND |
2016-04-13 | 154811.01 | ND |
2016-09-23 | 160858.01 | ND |
2016-11-30 | 163370.01 | ND |
2017-12-27 | 177414.01 | ND |
2018-12-18 | 1812-01973-001 | ND |
2018-12-27 | 1812-02385-001 | ND |
2019-09-24 | 1909-03140-001 | ND |
2019-09-24 | 1909-03143-001 | ND |
2019-12-16 | 1912-01493-001 | ND |
2019-12-16 | 1912-01498-001 | ND |