1,2,4-Trichlorobenzene
Okarche Rural Water District Inc.
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 | 21 | 0 | ND |
| 2015 | ND | 21 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-02-24 | 039507.001 | ND |
| 2014-03-25 | 039953.005 | ND |
| 2014-03-25 | 039953.004 | ND |
| 2014-03-25 | 039953.003 | ND |
| 2014-03-25 | 039953.002 | ND |
| 2014-03-25 | 039953.001 | ND |
| 2014-05-15 | 043119.001 | ND |
| 2014-05-15 | 043119.002 | ND |
| 2014-05-15 | 043119.003 | ND |
| 2014-05-15 | 043119.004 | ND |
| 2014-05-15 | 043119.005 | ND |
| 2014-12-01 | 049790.005 | ND |
| 2014-12-01 | 049790.004 | ND |
| 2014-12-01 | 049790.003 | ND |
| 2014-12-01 | 049790.002 | ND |
| 2014-12-01 | 049790.001 | ND |
| 2014-12-08 | 051648.005 | ND |
| 2014-12-08 | 051648.004 | ND |
| 2014-12-08 | 051648.003 | ND |
| 2014-12-08 | 051648.002 | ND |
| 2014-12-08 | 051648.001 | ND |
| 2015-02-04 | 052989.001 | ND |
| 2015-03-17 | 054546.005 | ND |
| 2015-03-17 | 054546.004 | ND |
| 2015-03-17 | 054546.003 | ND |
| 2015-03-17 | 054546.002 | ND |
| 2015-03-17 | 054546.001 | ND |
| 2015-07-09 | 059179.005 | ND |
| 2015-07-09 | 059179.004 | ND |
| 2015-07-09 | 059179.003 | ND |
| 2015-07-09 | 059179.002 | ND |
| 2015-07-09 | 059179.001 | ND |
| 2015-09-16 | 062700.005 | ND |
| 2015-09-16 | 062700.001 | ND |
| 2015-09-16 | 062700.002 | ND |
| 2015-09-16 | 062700.003 | ND |
| 2015-09-16 | 062700.004 | ND |
| 2015-12-16 | 066320.005 | ND |
| 2015-12-16 | 066320.004 | ND |
| 2015-12-16 | 066320.003 | ND |
| 2015-12-16 | 066320.002 | ND |
| 2015-12-16 | 066320.001 | ND |
| 2016-03-23 | SDWA-1015703-00 | ND |
| 2017-06-22 | SDWA-1166324-03 | ND |