1,2,4-Trichlorobenzene
Bellefontaine City PWS
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 | 1 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-09-05 | A140217250 | ND |
| 2015-07-01 | A150232046 | ND |
| 2015-09-04 | A150136714 | ND |
| 2015-11-06 | A150310724 | ND |
| 2015-12-08 | A150332017 | ND |
| 2016-01-06 | A160332099 | ND |
| 2016-06-01 | A160399278 | ND |
| 2016-07-01 | A160331874 | ND |
| 2017-07-07 | A170504754 | ND |
| 2018-07-06 | A180614035 | ND |
| 2019-08-16 | 9H02870-01 | ND |