1,2,4-Trichlorobenzene
North Slope Borough - Point Hope
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 | 1 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-10-07 | VO*F1410079-01B | ND |
2015-03-31 | VO*3219731 | ND |
2015-04-14 | VO*3226007 | ND |
2015-07-21 | VO*3286530 | ND |
2015-10-22 | VO*3349853 | ND |
2016-07-31 | VO*3513446 | ND |
2017-09-19 | VO*3784355 | ND |
2018-01-11 | VO*3855925 | ND |
2018-07-26 | VO*4009253 | ND |
2019-01-22 | 4184995 | ND |