1,2,4-Trichlorobenzene
Big Bear City CSD
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 | 14 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 6 | 0 | ND |
2018 | ND | 1 | 0 | ND |
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 |
---|---|---|
2014-01-02 | 3761-014-1045 | ND |
2014-06-04 | 3761-004-1125 | ND |
2014-06-04 | 3761-016-1020 | ND |
2014-06-04 | 3761-015-0925 | ND |
2014-06-04 | 3761-014-1030 | ND |
2014-06-04 | 3761-012-1105 | ND |
2014-06-04 | 3761-010-1140 | ND |
2014-06-04 | 3761-009-1135 | ND |
2014-06-04 | 3761-008-1055 | ND |
2014-06-04 | 3761-006-1005 | ND |
2014-06-04 | 3761-005-1130 | ND |
2014-06-04 | 3761-003-0750 | ND |
2014-06-04 | 3761-002-0900 | ND |
2014-06-04 | 3761-001-0840 | ND |
2017-05-31 | 3761-004-1015 | ND |
2017-05-31 | 3761-012-1000 | ND |
2017-05-31 | 3761-010-1040 | ND |
2017-05-31 | 3761-009-1020 | ND |
2017-05-31 | 3761-008-0953 | ND |
2017-05-31 | 3761-005-1020 | ND |
2018-06-12 | 3761-018-0800 | ND |