1,2,4-Trichlorobenzene
Rolling Green First Addition
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 | ND | 6 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2015-06-08 | 15F0520-01 | ND |
| 2015-06-08 | 15F0520-02 | ND |
| 2015-08-13 | 15H0974-01 | ND |
| 2015-08-13 | 15H0974-02 | ND |
| 2015-11-02 | 15K0134-02 | ND |
| 2015-11-02 | 15K0134-03 | ND |
| 2016-03-14 | 3414156 | ND |
| 2016-03-14 | 3414240 | ND |
| 2016-05-03 | 16E0133-01 | ND |
| 2016-05-03 | 16E0133-02 | ND |
| 2017-08-21 | 17H1662-01 | ND |
| 2017-08-21 | 17H1662-02 | ND |
| 2018-07-18 | 18G1275-01 | ND |