2,4,5-TP (Silvex)
Saint Louis Park
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.
17
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 | 8 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-03-19 | 14C0822-02 | ND |
| 2014-03-19 | 14C0822-01 | ND |
| 2014-05-29 | 14E3051-01 | ND |
| 2014-05-29 | 14E3051-03 | ND |
| 2014-05-29 | 14E3056-01 | ND |
| 2014-05-29 | 14E3056-02 | ND |
| 2014-08-26 | 14H2348-01 | ND |
| 2014-08-26 | 14H2348-02 | ND |
| 2016-02-17 | 16B0917-01 | ND |
| 2016-02-17 | 16B0917-04 | ND |
| 2016-02-17 | 16B0917-03 | ND |
| 2016-02-17 | 16B0917-02 | ND |
| 2016-05-17 | 3451162 | ND |
| 2016-05-17 | 3451167 | ND |
| 2017-08-01 | 17H0065-01 | ND |
| 2017-11-01 | 17K0059-03 | ND |
| 2018-04-10 | 18D0389-01 | ND |