1,2,4-Trichlorobenzene
Gretna, City of
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 | N/A | 0 | 0 | N/A |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 7 | 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 |
|---|---|---|
| 2014-05-27 | 294410 | ND |
| 2014-05-27 | 294411 | ND |
| 2014-08-18 | 310167 | ND |
| 2014-08-18 | 310168 | ND |
| 2014-11-12 | 328547 | ND |
| 2015-05-18 | 353447 | ND |
| 2017-01-30 | ND | |
| 2017-01-30 | ND | |
| 2017-05-22 | ND | |
| 2017-05-22 | ND | |
| 2017-09-18 | ND | |
| 2017-09-18 | ND | |
| 2017-10-16 | ND | |
| 2018-05-29 | 541483 | ND |
| 2018-08-13 | 560229 | ND |
| 2018-08-13 | 560230 | ND |
| 2018-08-13 | 560231 | ND |
| 2018-08-13 | 560232 | ND |
| 2018-08-13 | 560233 | ND |
| 2018-09-17 | 571915 | ND |
| 2019-09-16 | 630397 | ND |