2,4,5-TP (Silvex)
Clinton, City of
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
14
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP 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 harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-21 | AD38637 | ND |
| 2014-07-14 | AD42593 | ND |
| 2014-12-02 | AD48738 | ND |
| 2015-03-23 | AD53251 | ND |
| 2015-04-01 | AD53620 | ND |
| 2015-07-30 | AD58892 | ND |
| 2016-05-05 | AD75448 | ND |
| 2017-04-06 | AD92284 | ND |
| 2017-11-21 | AE04131 | ND |
| 2018-04-16 | AE10864 | ND |
| 2019-02-21 | AE26172 | ND |
| 2019-04-16 | AE28863 | ND |
| 2019-08-06 | AE34780 | ND |
| 2019-12-05 | AE41273 | ND |