1,2,4-Trichlorobenzene
City of Chesapeake - Northwest River System
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 | 3 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-01-27 | 14*01148-VOC | ND |
2014-12-09 | E140800085 | ND |
2015-04-06 | VA010-DCLS | ND |
2015-08-18 | VA010-DCLS | ND |
2015-10-28 | VA010-DCLS | ND |
2016-04-18 | E160302045 | ND |
2016-11-15 | E161000243 | ND |
2017-04-25 | E170307529 | ND |
2017-11-13 | E170906613 | ND |
2018-06-12 | E180602859 | ND |
2018-11-05 | E181000457 | ND |
2019-05-13 | E190307955 | ND |
2019-11-05 | E191004164 | ND |