1,2,4-Trichlorobenzene
Lake Shawnee Estates
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 | 0.000114 ppb | 5 | 1 | ND - 0.000570 ppb |
| 2016 | ND | 3 | 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 |
|---|---|---|
| 2014-02-20 | 1402M42-04A | ND |
| 2014-04-17 | 14043203-001VOC | ND |
| 2014-05-15 | 1405K73-01A | ND |
| 2014-05-15 | 1405K74-01A | ND |
| 2014-12-10 | 1412I93-01A | ND |
| 2015-01-22 | 00281-REI CONSUL | ND |
| 2015-01-22 | 460150-REI CONSU | ND |
| 2015-04-28 | 460150-REI CONSU | ND |
| 2015-07-28 | 460150-REI CONSU | 0.000570 ppb |
| 2015-10-27 | 460150-REI CONSU | ND |
| 2016-02-11 | 1602I09-02A | ND |
| 2016-02-11 | 1602I09-02A | ND |
| 2016-09-07 | 16090811-01A | ND |
| 2017-08-22 | 17083478-01A | ND |
| 2017-08-22 | 17083478-01A | ND |
| 2018-09-05 | 18I0143-01 | ND |
| 2019-02-25 | 19B1011-02 | ND |
| 2019-08-26 | 19H1209-01 | ND |