1,2,4-Trichlorobenzene
Bella Vista City Water System
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 | 15 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 16 | 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 |
|---|---|---|
| 2014-01-14 | 14A0502-05(4V) | ND |
| 2014-01-14 | 14A0499-01(4V) | ND |
| 2014-01-14 | 14A0499-03(4V) | ND |
| 2014-01-14 | 14A0499-05(4V) | ND |
| 2014-01-14 | 14A0501-01(4V) | ND |
| 2014-01-14 | 14A0501-03(4V) | ND |
| 2014-01-14 | 14A0501-05(4V) | ND |
| 2014-01-14 | 14A0502-01(4V) | ND |
| 2014-01-14 | 14A0502-03(4V) | ND |
| 2014-01-15 | 14A0578-07(4V) | ND |
| 2014-01-15 | 14A0578-05(4V) | ND |
| 2014-01-15 | 14A0578-03(4V) | ND |
| 2014-01-15 | 14A0578-01(4V) | ND |
| 2014-01-15 | 14A0577-03(4V) | ND |
| 2014-01-15 | 14A0577-01(4V) | ND |
| 2017-02-21 | 17B0651-11(4V) | ND |
| 2017-02-21 | 17B0651-13(4V) | ND |
| 2017-02-21 | 17B0651-09(4V) | ND |
| 2017-02-21 | 17B0650-01(4V) | ND |
| 2017-02-21 | 17B0650-03(4V) | ND |
| 2017-02-21 | 17B0650-05(4V) | ND |
| 2017-02-21 | 17B0650-07(4V) | ND |
| 2017-02-21 | 17B0650-09(4V) | ND |
| 2017-02-21 | 17B0650-11(4V) | ND |
| 2017-02-21 | 17B0650-13(4V) | ND |
| 2017-02-21 | 17B0651-01(4V) | ND |
| 2017-02-21 | 17B0651-03(4V) | ND |
| 2017-02-21 | 17B0651-05(4V) | ND |
| 2017-02-21 | 17B0651-07(4V) | ND |
| 2017-02-23 | 17B0697-01(4V) | ND |
| 2017-04-12 | 17D0474-01(4V) | ND |
| 2018-02-20 | 18B0525-01(4V) | ND |
| 2019-01-15 | 19A0391-01(4V) | ND |
| 2019-01-15 | 19A0391-02(4V) | ND |