1,2,4-Trichlorobenzene
City of Watsonville
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 | 15 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 14 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-02-19 | 9590-009-1430 | ND |
2014-03-19 | 9590-004-0800 | ND |
2014-03-19 | 9590-030-0900 | ND |
2014-03-19 | 9590-029-0845 | ND |
2014-03-19 | 9590-016-0900 | ND |
2014-03-19 | 9590-015-0805 | ND |
2014-03-19 | 9590-014-0740 | ND |
2014-03-19 | 9590-013-0835 | ND |
2014-03-19 | 9590-012-0920 | ND |
2014-03-19 | 9590-011-1000 | ND |
2014-03-19 | 9590-010-0915 | ND |
2014-03-19 | 9590-009-1100 | ND |
2014-03-19 | 9590-007-0840 | ND |
2014-03-19 | 9590-006-0800 | ND |
2014-03-19 | 9590-005-0745 | ND |
2017-03-15 | 9590-004-1040 | ND |
2017-03-15 | 9590-030-1100 | ND |
2017-03-15 | 9590-029-0830 | ND |
2017-03-15 | 9590-016-0840 | ND |
2017-03-15 | 9590-015-1010 | ND |
2017-03-15 | 9590-014-0825 | ND |
2017-03-15 | 9590-013-0945 | ND |
2017-03-15 | 9590-012-0935 | ND |
2017-03-15 | 9590-011-1010 | ND |
2017-03-15 | 9590-010-0955 | ND |
2017-03-15 | 9590-009-1030 | ND |
2017-03-15 | 9590-007-1100 | ND |
2017-03-15 | 9590-006-0910 | ND |
2017-03-15 | 9590-005-0905 | ND |