2,4,5-TP (Silvex)
University Of Notre Dame
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.
30
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 | 2 | 0 | ND |
| 2015 | ND | 14 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 14 | 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 |
|---|---|---|
| 2014-09-22 | 325883RS28-1403 | ND |
| 2014-10-27 | 328042RS28-1404 | ND |
| 2015-03-17 | 3207452RS28-1501 | ND |
| 2015-03-17 | 3207443RS28-1501 | ND |
| 2015-03-17 | 3207434RS28-1501 | ND |
| 2015-03-17 | 3207425RS28-1501 | ND |
| 2015-03-17 | 3207398RS28-1501 | ND |
| 2015-03-17 | 3207407RS28-1501 | ND |
| 2015-03-17 | 3207416RS28-1501 | ND |
| 2015-06-19 | 3265313RS28-1502 | ND |
| 2015-06-19 | 3265353RS28-1502 | ND |
| 2015-06-19 | 3265343RS28-1502 | ND |
| 2015-06-19 | 3265333RS28-1502 | ND |
| 2015-06-19 | 3265323RS28-1502 | ND |
| 2015-06-19 | 3265303RS28-1502 | ND |
| 2015-06-19 | 3265363RS28-1502 | ND |
| 2018-04-24 | 18042859RS28-180 | ND |
| 2018-04-24 | 18042858RS28-180 | ND |
| 2018-04-24 | 18042854RS28-180 | ND |
| 2018-04-24 | 18042853RS28-180 | ND |
| 2018-04-24 | 18042852RS28-180 | ND |
| 2018-04-24 | 18042847RS28-180 | ND |
| 2018-04-24 | 18042756RS28-180 | ND |
| 2018-08-14 | 18081646RS28-180 | ND |
| 2018-08-14 | 18081644RS28-180 | ND |
| 2018-08-14 | 18081642RS28-180 | ND |
| 2018-08-14 | 18081641RS28-180 | ND |
| 2018-08-14 | 18081640RS28-180 | ND |
| 2018-08-14 | 18081639RS28-180 | ND |
| 2018-08-15 | 18081645RS28-180 | ND |