1,2,4-Trichlorobenzene
Onalaska Water Supply Corporation
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 | 6 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2014-01-21 | AC39512 | ND |
2014-06-19 | AC57483 | ND |
2015-04-23 | AC89410 | ND |
2015-04-23 | AC89428 | ND |
2015-04-23 | AC89416 | ND |
2015-08-10 | AD03271 | ND |
2015-09-10 | AD06574 | ND |
2015-10-06 | AD09631 | ND |
2016-01-20 | AD18982 | ND |
2016-01-20 | AD18942 | ND |
2016-01-20 | AD18960 | ND |
2016-01-20 | AD18984 | ND |
2017-03-21 | AD76077 | ND |
2017-03-21 | AD76073 | ND |
2017-03-21 | AD76071 | ND |
2018-02-15 | AE14067 | ND |
2018-02-15 | AE14113 | ND |
2018-02-15 | AE14109 | ND |
2018-02-15 | AE14073 | ND |
2019-11-19 | AE89803 | ND |
2019-11-19 | AE89807 | ND |
2019-11-19 | AE89801 | ND |