1,2,4-Trichlorobenzene
City of Willis
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 | ND | 1 | 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 |
---|---|---|
2014-01-22 | AC39831 | ND |
2015-07-20 | AD00177 | ND |
2015-07-20 | AD00179 | ND |
2015-10-07 | AD09803 | ND |
2016-05-10 | AD36139 | ND |
2016-05-10 | AD36111 | ND |
2016-05-10 | AD36113 | ND |
2017-02-28 | AD72494 | ND |
2017-02-28 | AD72450 | ND |
2017-02-28 | AD72480 | ND |
2018-03-20 | AE19046 | ND |
2018-03-20 | AE19084 | ND |
2018-07-05 | AE32438 | ND |
2019-05-09 | AE65699 | ND |
2019-05-09 | AE65701 | ND |
2019-05-09 | AE65703 | ND |