1,2,4-Trichlorobenzene
Dogwood Hills
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 | N/A | 0 | 0 | N/A |
2015 | ND | 3 | 0 | ND |
2016 | ND | 4 | 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 |
---|---|---|
2015-08-19 | AD04695 | ND |
2015-09-28 | AD08768 | ND |
2015-09-28 | AD08738 | ND |
2016-03-30 | AD31166 | ND |
2016-03-30 | AD31190 | ND |
2016-03-30 | AD31164 | ND |
2016-06-15 | AD40760 | ND |
2017-09-08 | AD95455 | ND |
2017-09-08 | AD95449 | ND |
2017-09-08 | AD95445 | ND |
2018-03-20 | AE19092 | ND |
2018-03-20 | AE19094 | ND |
2018-03-20 | AE19086 | ND |
2019-11-07 | AE88911 | ND |
2019-11-07 | AE88915 | ND |
2019-11-07 | AE88909 | ND |