1,2,4-Trichlorobenzene
Decker Hills
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 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 |
---|---|---|
2014-04-15 | AC50585 | ND |
2015-09-23 | AD08265 | ND |
2015-09-23 | AD08263 | ND |
2015-09-23 | AD08267 | ND |
2015-09-23 | AD08259 | ND |
2016-06-01 | AD38987 | ND |
2016-06-01 | AD38989 | ND |
2016-06-01 | AD38973 | ND |
2016-06-01 | AD38981 | ND |
2017-08-25 | AD94469 | ND |
2017-08-25 | AD94483 | ND |
2017-08-25 | AD94481 | ND |
2017-08-25 | AD94475 | ND |
2018-07-09 | AE32630 | ND |
2018-07-09 | AE32626 | ND |
2018-07-09 | AE32644 | ND |
2018-07-09 | AE32636 | ND |
2019-03-19 | AE59057 | ND |
2019-03-19 | AE59039 | ND |
2019-03-19 | AE59055 | ND |
2019-03-19 | AE59037 | ND |