1,2,4-Trichlorobenzene
East Valley Water District
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 | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 18 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 17 | 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 |
|---|---|---|
| 2014-02-21 | 3761-036-0745 | ND |
| 2014-07-23 | 3761-028-1130 | ND |
| 2015-03-24 | 3761-036-0745 | ND |
| 2016-01-05 | 3761-036-1003 | ND |
| 2016-03-01 | 3761-033-0753 | ND |
| 2016-03-01 | 3761-053-0820 | ND |
| 2016-03-01 | 3761-015-0744 | ND |
| 2016-03-01 | 3761-032-0806 | ND |
| 2016-03-01 | 3761-031-0841 | ND |
| 2016-03-01 | 3761-024-0855 | ND |
| 2016-03-01 | 3761-016-0829 | ND |
| 2016-03-01 | 3761-021-0915 | ND |
| 2016-03-01 | 3761-017-1000 | ND |
| 2016-03-01 | 3761-020-0924 | ND |
| 2016-03-02 | 3761-055-0913 | ND |
| 2016-03-02 | 3761-046-0811 | ND |
| 2016-03-02 | 3761-042-0747 | ND |
| 2016-03-02 | 3761-039-0821 | ND |
| 2016-03-03 | 3761-023-0900 | ND |
| 2016-03-03 | 3761-047-0505 | ND |
| 2016-03-03 | 3761-019-0823 | ND |
| 2017-01-05 | 3761-036-0820 | ND |
| 2017-12-05 | 3761-028-0850 | ND |
| 2018-01-05 | 3761-036-0752 | ND |
| 2019-01-03 | 3761-036-0830 | ND |
| 2019-03-05 | 3761-033-0735 | ND |
| 2019-03-05 | 3761-017-0807 | ND |
| 2019-03-05 | 3761-032-0750 | ND |
| 2019-03-05 | 3761-020-0818 | ND |
| 2019-03-12 | 3761-021-0808 | ND |
| 2019-03-12 | 3761-023-0754 | ND |
| 2019-03-12 | 3761-042-0729 | ND |
| 2019-03-12 | 3761-024-0820 | ND |
| 2019-03-12 | 3761-047-0753 | ND |
| 2019-03-19 | 3761-015-0734 | ND |
| 2019-03-19 | 3761-053-0751 | ND |
| 2019-03-19 | 3761-031-0759 | ND |
| 2019-03-19 | 3761-019-0825 | ND |
| 2019-03-26 | 3761-055-1014 | ND |
| 2019-03-26 | 3761-039-0955 | ND |
| 2019-06-21 | 3761-046-0810 | ND |