1,2,4-Trichlorobenzene
Thomas Cove
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 | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | 0.160 ppb | 5 | 2 | ND - 0.400 ppb |
2019 | ND | 6 | 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 |
---|---|---|
2014-09-30 | L5153605-1 VOC | ND |
2014-10-21 | L5242402-1 VOC | ND |
2015-03-26 | L5486345-VOC | ND |
2015-05-04 | L5530433-1-VOC | ND |
2016-09-23 | L6372290-1 VOC | ND |
2016-09-23 | L6372174-1 VOC | ND |
2017-02-17 | L6635059-1 VOC | ND |
2017-02-17 | L6568639-1 VOC | ND |
2018-03-28 | 8030875-01 VOC | 0.400 ppb |
2018-03-28 | 8030880-01 VOC | 0.400 ppb |
2018-07-06 | 8071605-01 VOC | ND |
2018-07-06 | 8071604-01 VOC | ND |
2018-10-04 | 8101778-01 VOC | ND |
2019-01-08 | 8124644-01 SUVO | ND |
2019-01-23 | 8124645-01 SUVO | ND |
2019-04-09 | 9042041-01 SUVO | ND |
2019-04-09 | 9042040-01 SUVO | ND |
2019-06-25 | 9055333-01 VOC | ND |
2019-06-25 | 9055337-01 VOC | ND |