2,4,5-TP (Silvex)
North 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.
22
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 10 | 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 |
|---|---|---|
| 2015-05-05 | 15E0221-03 | ND |
| 2015-05-05 | 15E0221-04 | ND |
| 2015-05-05 | 15E0230-01 | ND |
| 2015-05-05 | 15E0221-02 | ND |
| 2015-09-02 | 15I0124-01 | ND |
| 2015-09-02 | 15I0124-02 | ND |
| 2015-09-02 | 15I0124-03 | ND |
| 2015-09-02 | 15I0124-04 | ND |
| 2016-08-04 | 3513488 | ND |
| 2016-08-04 | 3513398 | ND |
| 2016-08-04 | 3513386 | ND |
| 2016-08-04 | 3513308 | ND |
| 2018-04-11 | 18D0458-01 | ND |
| 2018-04-11 | 18D0458-02 | ND |
| 2018-04-11 | 18D0458-03 | ND |
| 2018-04-11 | 18D0458-04 | ND |
| 2018-04-11 | 18D0461-01 | ND |
| 2018-08-22 | 18H1818-01 | ND |
| 2018-08-22 | 18H1818-02 | ND |
| 2018-08-22 | 18H1818-03 | ND |
| 2018-08-22 | 18H1818-04 | ND |
| 2018-08-22 | 18H1827-01 | ND |