1,2,4-Trichlorobenzene
City of Colton
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 3 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 12 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 2 | 0 | ND |
2019 | ND | 10 | 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 |
---|---|---|
2014-02-19 | 3761-030-0740 | ND |
2014-05-08 | 3761-030-0740 | ND |
2014-08-19 | 3761-030-0930 | ND |
2015-08-20 | 3761-010-0640 | ND |
2016-06-13 | 3761-016-1030 | ND |
2016-09-07 | 3761-008-0800 | ND |
2016-09-07 | 3761-024-1325 | ND |
2016-09-07 | 3761-021-0845 | ND |
2016-09-07 | 3761-011-0810 | ND |
2016-09-07 | 3761-017-0705 | ND |
2016-09-07 | 3761-030-0900 | ND |
2016-09-07 | 3761-016-0925 | ND |
2016-09-07 | 3761-015-0745 | ND |
2016-09-07 | 3761-014-0730 | ND |
2016-09-07 | 3761-010-1535 | ND |
2016-12-14 | 3761-023-1020 | ND |
2018-06-12 | 3761-023-1000 | ND |
2018-09-06 | 3761-012-1330 | ND |
2019-07-30 | 3761-017-0830 | ND |
2019-09-12 | 3761-030-0955 | ND |
2019-09-12 | 3761-017-1040 | ND |
2019-09-12 | 3761-021-1100 | ND |
2019-09-12 | 3761-016-1020 | ND |
2019-09-12 | 3761-011-1320 | ND |
2019-09-16 | 3761-023-0000 | ND |
2019-09-16 | 3761-015-0000 | ND |
2019-09-16 | 3761-010-0000 | ND |
2019-09-16 | 3761-012-0000 | ND |