1,2,4-Trichlorobenzene
Sycamore
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 | 5 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-01-15 | SA40288-01_01 | ND |
| 2014-01-15 | SA40288-02_01 | ND |
| 2014-01-15 | SA40288-03_01 | ND |
| 2015-01-20 | SA50450-01_01 | ND |
| 2015-01-20 | SA50450-02_01 | ND |
| 2015-04-14 | SD50420-01_01 | ND |
| 2015-07-15 | SG50867-01_01 | ND |
| 2015-11-02 | SK50115-01_01 | ND |
| 2016-01-13 | 16A0323-01_01 | ND |
| 2017-01-10 | 17A0270-01_01 | ND |
| 2018-01-22 | 18A0385-01_01 | ND |
| 2018-01-22 | 18A0385-02_01 | ND |
| 2019-01-10 | 19A0280-01_01 | ND |
| 2019-04-30 | 19E0017-01 | ND |
| 2019-04-30 | 19E0017-02 | ND |