1,2,4-Trichlorobenzene
Amawalk-shenorock 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 | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2014-03-10 | 420-75590-3 POC | ND |
| 2014-03-10 | 420-75590-4 POC | ND |
| 2014-03-10 | 420-75590-1 POC | ND |
| 2014-03-10 | 420-75590-2 POC | ND |
| 2016-03-09 | 420-101678-2 POC | ND |
| 2016-03-09 | 420-101678-1 POC | ND |
| 2016-03-09 | 420-101678-3 POC | ND |
| 2016-03-09 | 420-101678-4 POC | ND |
| 2017-02-28 | 420-117562-2-POC | ND |
| 2017-02-28 | 420-117562-4-POC | ND |
| 2017-02-28 | 420-117562-3-POC | ND |
| 2017-02-28 | 420-117562-1-POC | ND |
| 2018-02-12 | 420-132804-2-POC | ND |
| 2018-02-12 | 420-132804-3-POC | ND |
| 2018-02-12 | 420-132804-1-POC | ND |
| 2018-02-12 | 420-132804-4-POC | ND |
| 2019-02-27 | 420-150071-1 POC | ND |
| 2019-02-27 | 420-150071-4 POC | ND |
| 2019-02-27 | 420-150071-3 POC | ND |
| 2019-02-27 | 420-150071-2 POC | ND |