1,2,4-Trichlorobenzene
Valencia Heights Water Company
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 | 3 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-07-11 | 9588-012-1120 | ND |
| 2014-07-11 | 9588-010-1105 | ND |
| 2014-07-11 | 9588-005-1140 | ND |
| 2015-07-16 | 9588-010-0745 | ND |
| 2015-07-16 | 9588-012-0730 | ND |
| 2016-04-06 | 9588-005-0810 | ND |
| 2016-07-15 | 9588-010-0830 | ND |
| 2016-07-15 | 9588-012-0840 | ND |
| 2017-04-18 | 9588-005-0910 | ND |
| 2017-07-12 | 9588-012-0840 | ND |
| 2017-07-12 | 9588-010-0850 | ND |
| 2018-06-26 | 9588-005-0745 | ND |
| 2018-07-13 | 9588-010-0840 | ND |
| 2018-07-13 | 9588-012-0825 | ND |
| 2019-04-09 | 9588-005-0710 | ND |
| 2019-07-12 | 9588-010-0705 | ND |
| 2019-07-12 | 9588-012-0725 | ND |