1,2,4-Trichlorobenzene
Ponca City Mun Water
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 | ND | 4 | 0 | ND |
| 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 |
|---|---|---|
| 2014-02-05 | 4B05145-01 | ND |
| 2014-05-07 | 4E08044-01 | ND |
| 2014-08-05 | 4H06167-01 | ND |
| 2014-11-12 | 4K12153-01 | ND |
| 2015-02-04 | 5B04138-01 | ND |
| 2015-05-06 | 5E06209-01 | ND |
| 2015-08-05 | 5H05195-01 | ND |
| 2015-11-11 | 5K11089-01 | ND |
| 2016-02-10 | 6B10096-01 | ND |
| 2016-05-11 | 6E11133-01 | ND |
| 2016-08-17 | 6H17151-01 | ND |
| 2016-11-16 | 6K16195-01RE1 | ND |
| 2017-02-08 | 7B08205-01 | ND |
| 2017-05-17 | 7E17145-01 | ND |
| 2017-08-09 | 7H09120-01 | ND |
| 2017-11-08 | 7K08137-01 | ND |
| 2018-03-21 | AC21189-01 | ND |
| 2018-06-06 | AF06230-01 | ND |
| 2018-09-26 | AI26132-01 | ND |
| 2018-12-19 | AL19165-01RE1 | ND |
| 2019-03-13 | BC13136-01RE1 | ND |
| 2019-06-19 | BF19144-01 | ND |
| 2019-09-11 | BI11145-01 | ND |
| 2019-12-04 | BL04182-01 | ND |