1,2,4-Trichlorobenzene
Mountain Water & Sanitation District
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 | 2 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 5 | 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 | Result |
---|---|
2014-01-15 | ND |
2014-02-12 | ND |
2015-03-30 | ND |
2015-05-13 | ND |
2015-05-19 | ND |
2015-06-10 | ND |
2016-05-12 | ND |
2016-06-07 | ND |
2016-08-18 | ND |
2018-05-15 | ND |
2018-05-15 | ND |
2018-05-15 | ND |
2018-05-15 | ND |
2018-08-21 | ND |
2019-04-24 | ND |
2019-05-02 | ND |
2019-11-12 | ND |
2019-11-12 | ND |