2,4,5-TP (Silvex)
South Saint Paul
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.
13
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 | ND | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-08-26 | 14H2315-01 | ND |
| 2014-12-02 | 14L0044-04 | ND |
| 2015-10-26 | 15J1364-02 | ND |
| 2016-07-18 | 3495869 | ND |
| 2016-10-11 | 3563213 | ND |
| 2017-07-10 | 17G0315-01 | ND |
| 2017-10-10 | 17J0471-01 | ND |
| 2018-01-03 | 18A0012-01 | ND |
| 2018-05-10 | 18E0851-02 | ND |
| 2018-05-10 | 18E0851-03 | ND |
| 2018-08-24 | 18H2147-01 | ND |
| 2018-10-18 | 18J0909-01 | ND |
| 2019-01-14 | 19A0377-01 | ND |