1,2,4-Trichlorobenzene
Fort Sam Houston
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2015-03-23 | AC85623 | ND |
| 2016-02-25 | AD25793 | ND |
| 2016-09-28 | AD51718 | ND |
| 2016-12-15 | AD62394 | ND |
| 2017-01-30 | AD67573 | ND |
| 2017-01-30 | AD67575 | ND |
| 2017-04-24 | AD80717 | ND |
| 2017-04-24 | AD80715 | ND |
| 2017-07-07 | AD88708 | ND |
| 2017-10-10 | AE00129 | ND |
| 2018-01-18 | AE09245 | ND |
| 2018-04-20 | AE23481 | ND |
| 2018-04-20 | AE23471 | ND |
| 2019-01-24 | AE51287 | ND |
| 2019-01-24 | AE51285 | ND |
| 2019-01-24 | AE51269 | ND |