2,4,5-TP (Silvex)
Purdue University Water Works
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.
24
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 12 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 12 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2015-06-10 | 540591RS28-1502 | ND |
| 2015-06-10 | 540590RS28-1502 | ND |
| 2015-06-10 | 540589RS28-1502 | ND |
| 2015-06-10 | 540588RS28-1502 | ND |
| 2015-06-10 | 540586RS28-1502 | ND |
| 2015-06-10 | 540587RS28-1502 | ND |
| 2015-09-30 | 549696RS28-1503 | ND |
| 2015-09-30 | 549695RS28-1503 | ND |
| 2015-09-30 | 549964RS28-1503 | ND |
| 2015-09-30 | 549699RS28-1503 | ND |
| 2015-09-30 | 549698RS28-1503 | ND |
| 2015-09-30 | 549697RS28-1503 | ND |
| 2018-06-21 | 639122 | ND |
| 2018-06-21 | 639121 | ND |
| 2018-06-21 | 639120 | ND |
| 2018-06-21 | 639119 | ND |
| 2018-06-21 | 639118 | ND |
| 2018-06-21 | 639117 | ND |
| 2018-08-13 | 643444 | ND |
| 2018-08-13 | 643443 | ND |
| 2018-08-13 | 643442 | ND |
| 2018-08-13 | 643441 | ND |
| 2018-08-13 | 643440 | ND |
| 2018-08-13 | 643439 | ND |