1,2,4-Trichlorobenzene
Riverland Terrace Nonprofit Water Corporation
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2017-06-30 | VE170600341-001 | ND |
| 2017-12-12 | V1757701 | ND |
| 2018-03-21 | V1812049 | ND |
| 2018-06-28 | VE180600271-001 | ND |
| 2018-09-26 | VE180900242-001 | ND |
| 2018-12-21 | VE181200215-001 | ND |
| 2018-12-21 | V1862524 | ND |
| 2019-03-29 | VE190300400-001 | ND |
| 2019-06-27 | VE190600369-001 | ND |
| 2019-09-25 | VE190900258-001 | ND |
| 2019-12-24 | VE191200231-002 | ND |