1,2,4-Trichlorobenzene
Covington County 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 |
|---|---|---|---|---|
| 2014 | ND | 5 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-01-06 | 140107003-1 | ND |
| 2014-01-06 | 140107003-2 | ND |
| 2014-01-06 | 140107003-3 | ND |
| 2014-04-07 | 140408063-1 | ND |
| 2014-10-06 | 141006037-1 | ND |
| 2015-10-05 | 151006018-1 | ND |
| 2016-04-04 | 160505095-2 | ND |
| 2016-04-04 | 160505095-1 | ND |
| 2016-10-03 | 161004036-1 | ND |
| 2017-01-05 | 170109014-3 | ND |
| 2017-01-05 | 170109014-1 | ND |
| 2017-01-05 | 170109014-2 | ND |
| 2017-10-02 | V171003029-1 | ND |
| 2018-10-04 | 18100216-001A | ND |
| 2019-01-07 | 19010199-002A | ND |
| 2019-01-07 | 19010199-001A | ND |
| 2019-10-11 | 20126321001_IVOC | ND |