1,2,4-Trichlorobenzene
Columbus Public Water System
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 | 3 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 3 | 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 |
---|---|---|
2014-04-14 | 14-14643-01B | ND |
2014-04-14 | 14-14643-02B | ND |
2014-06-09 | 14-17579-03B | ND |
2015-05-04 | 15-15632-03 | ND |
2015-05-04 | 15-15632-07 | ND |
2016-05-02 | 16-16287-02C | ND |
2016-05-02 | 16-16287-03B | ND |
2017-02-08 | 17-12280-02C | ND |
2017-02-08 | 17-12280-01C | ND |
2017-06-08 | 17-20232-03B | ND |
2018-02-01 | 18-11908-01C | ND |
2018-02-01 | 18-11908-02C | ND |
2019-02-05 | 19-12453-01C | ND |
2019-02-05 | 19-12453-02C | ND |