1,2,4-Trichlorobenzene
Southwest Ouachita Waterworks 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 | 8 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 14 | 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 |
|---|---|---|
| 2014-10-20 | AD98783 | ND |
| 2014-10-20 | AD98780 | ND |
| 2014-10-20 | AD98783 | ND |
| 2014-10-20 | AD98782 | ND |
| 2014-10-20 | AD98781 | ND |
| 2014-10-20 | AD98780 | ND |
| 2014-10-20 | AD98781 | ND |
| 2014-10-20 | AD98782 | ND |
| 2015-01-05 | AE00867 | ND |
| 2015-01-05 | AE00867 | ND |
| 2015-07-01 | 35195569004 | ND |
| 2015-07-01 | 35195569006 | ND |
| 2015-07-01 | 35195569006 | ND |
| 2015-07-01 | 35195569004 | ND |
| 2017-06-12 | 35318592003 | ND |
| 2017-06-12 | 35318592002 | ND |
| 2017-06-12 | 35318592001 | ND |
| 2017-06-12 | 35318592001 | ND |
| 2017-06-12 | 35318592002 | ND |
| 2017-06-12 | 35318592003 | ND |
| 2017-10-16 | 35343270001 | ND |
| 2017-10-16 | 35343270004 | ND |
| 2017-10-16 | 35343270003 | ND |
| 2017-10-16 | 35343270002 | ND |
| 2017-10-16 | 35343270001 | ND |
| 2017-10-16 | 35343270004 | ND |
| 2017-10-16 | 35343270003 | ND |
| 2017-10-16 | 35343270002 | ND |