1,2,4-Trichlorobenzene
Caroline Utility System
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 | 8 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-02-12 | 11532VOC2 | ND |
| 2014-02-12 | 11532VOC | ND |
| 2014-04-25 | 11553VOC | ND |
| 2014-04-25 | 11553VOC2 | ND |
| 2014-07-10 | 11384VOC | ND |
| 2014-07-10 | 11384VOC2 | ND |
| 2014-11-03 | 12130VOC | ND |
| 2014-11-03 | 12130VOC2 | ND |
| 2015-08-05 | 460141-SUMMIT EN | ND |
| 2015-11-16 | 00215-MID ATLANT | ND |
| 2015-11-16 | 00215-MID ATLANT | ND |
| 2016-03-22 | 13602-01 | ND |
| 2016-05-25 | 13829VOC | ND |
| 2016-05-25 | 13829VOC2 | ND |
| 2016-06-27 | 13927VOC | ND |
| 2017-02-22 | 14842VOC2 | ND |
| 2017-02-22 | 14842VOC | ND |
| 2018-02-27 | PR190VOC | ND |
| 2019-01-29 | PR1575-V | ND |
| 2019-08-01 | E190704242 | ND |