1,2,4-Trichlorobenzene
North Slope Borough - Anaktuvuk Pass
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 | 3 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-07-29 | VO*F1407236-01A | ND |
| 2015-03-18 | VO*3210051 | ND |
| 2015-05-04 | VO*3236239 | ND |
| 2015-09-21 | VO*3329341 | ND |
| 2015-10-13 | VO*3341327 | ND |
| 2016-01-05 | VO*3383217 | ND |
| 2016-04-13 | VO*3431589 | ND |
| 2016-07-13 | VO*3496942 | ND |
| 2017-08-11 | VO*3758268 | ND |
| 2018-12-31 | 4164494 | ND |
| 2019-02-20 | 4206706 | ND |