1,2,4-Trichlorobenzene
Warrior River Water Authority
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2014-09-19 | 140919010-1 | ND |
| 2014-12-08 | 141208046-1 | ND |
| 2015-09-18 | 150918029-2 | ND |
| 2015-09-18 | 150918029-3 | ND |
| 2015-09-18 | 150918029-1 | ND |
| 2015-11-23 | 151123010-2 | ND |
| 2015-11-23 | 151123010-1 | ND |
| 2016-09-22 | 160922009-1 | ND |
| 2016-11-07 | 161107039-1 | ND |
| 2017-09-19 | 170919017-1 | ND |
| 2017-10-02 | 171002024-1 | ND |
| 2018-02-26 | 180226025-1 | ND |
| 2018-07-31 | 180731030-002 | ND |
| 2018-07-31 | 180731030-001 | ND |
| 2018-10-15 | 18100467-001A | ND |
| 2019-09-03 | 20119714001_IVOC | ND |
| 2019-11-04 | 20128690001_IVOC | ND |