1,2,4-Trichlorobenzene
Emerald Lake
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 | 5 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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 |
---|---|---|
2014-07-16 | 133667.02 | ND |
2014-10-15 | 136900.03 | ND |
2014-10-15 | 136900.05 | ND |
2014-10-15 | 136900.02 | ND |
2014-10-15 | 136900.01 | ND |
2015-10-19 | 149265.01 | ND |
2015-10-19 | 149265.02 | ND |
2015-10-19 | 149265.03 | ND |
2016-12-13 | 163860.03 | ND |
2016-12-13 | 163860.02 | ND |
2016-12-13 | 163860.01 | ND |
2017-02-21 | 165820.01 | ND |
2017-10-02 | 174061.01 | ND |
2017-10-02 | 174061.02 | ND |
2018-10-15 | 187909.01 | ND |
2018-10-15 | 187909.02 | ND |
2018-10-15 | 187909.03 | ND |
2019-10-11 | 201688.01 | ND |
2019-10-11 | 201688.02 | ND |
2019-10-11 | 201688.03 | ND |