1,2,4-Trichlorobenzene
City of Santa Barbara Water Department
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 | 4 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-10-21 | 9590-042-0758 | ND |
2014-10-21 | 9590-035-0931 | ND |
2014-10-21 | 9590-015-0843 | ND |
2014-10-22 | 9590-004-1014 | ND |
2015-05-12 | 9590-055-0842 | ND |
2015-11-10 | 9590-005-1050 | ND |
2016-11-02 | 9590-031-1120 | ND |
2016-11-02 | 9590-053-1152 | ND |
2017-05-18 | 9590-058-1734 | ND |
2017-11-07 | 9590-004-0955 | ND |
2017-11-14 | 9590-035-0930 | ND |
2017-11-14 | 9590-042-0848 | ND |
2018-07-30 | 9590-058-0815 | ND |
2018-09-25 | 9590-015-0947 | ND |
2018-09-25 | 9590-055-1120 | ND |
2018-09-26 | 9590-004-1131 | ND |
2019-09-04 | 9590-058-1240 | ND |
2019-10-29 | 9590-031-0904 | ND |
2019-10-29 | 9590-004-1034 | ND |
2019-12-05 | 9590-053-1403 | ND |