1,2,4-Trichlorobenzene
Portland Water Bureau
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 | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-04-08 | BB38036-V | ND |
2014-07-08 | BB42035-V | ND |
2015-03-31 | BB49816-V | ND |
2015-06-17 | BB52444-V | ND |
2016-04-05 | BB61496-V | ND |
2016-08-01 | BB71730-V | ND |
2017-02-22 | BB84114-V | ND |
2017-04-04 | BB87017-V | ND |
2018-03-15 | BC03118-V | ND |
2018-04-03 | BC04117-V | ND |
2019-04-02 | BC21049-V | ND |
2019-07-15 | BC25289-V | ND |