1,2,4-Trichlorobenzene
Warrington Twp Water&sew Dept
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 | 9 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-01-27 | L4861062-1 | ND |
| 2014-01-27 | L4861067-1 | ND |
| 2014-01-27 | L4861062-3 | ND |
| 2014-01-27 | L4861062-4 | ND |
| 2014-01-27 | L4861062-5 | ND |
| 2014-03-13 | L4940517-1 | ND |
| 2014-03-13 | L4940517-2 | ND |
| 2014-06-12 | L5059467-1 | ND |
| 2014-09-19 | L5205522-1 | ND |
| 2015-01-27 | 12274256 | ND |
| 2015-01-27 | 12274202 | ND |
| 2015-01-27 | 12274148 | ND |
| 2015-01-27 | 12274310 | ND |
| 2015-01-27 | 12274094 | ND |
| 2016-02-05 | 13857845 | ND |
| 2016-02-05 | 13857899 | ND |
| 2016-02-05 | 13857953 | ND |
| 2016-02-05 | 13858007 | ND |
| 2017-01-12 | 15502127 | ND |
| 2017-01-12 | 15502179 | ND |
| 2017-01-12 | 15502231 | ND |
| 2017-12-06 | 17148413 | ND |
| 2018-01-03 | 8011431-02 | ND |
| 2018-01-03 | 8011431-03 | ND |
| 2019-01-02 | 9011290-01 | ND |
| 2019-01-02 | 9011290-02 | ND |