2,4,5-TP (Silvex)
Coon Rapids
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2015-06-03 | 15F0264-02 | ND |
| 2015-06-03 | 15F0264-03 | ND |
| 2015-06-03 | 15F0264-04 | ND |
| 2015-06-03 | 15F0264-01 | ND |
| 2015-08-10 | 15H0594-03 | ND |
| 2015-08-10 | 15H0594-04 | ND |
| 2015-08-10 | 15H0595-01 | ND |
| 2015-08-10 | 15H0595-02 | ND |
| 2016-08-04 | 3513461 | ND |
| 2016-08-04 | 3513429 | ND |
| 2016-08-04 | 3513412 | ND |
| 2016-08-04 | 3513343 | ND |
| 2016-08-04 | 3513260 | ND |
| 2016-10-11 | 3563145 | ND |
| 2016-10-11 | 3563065 | ND |
| 2016-10-11 | 3563178 | ND |
| 2017-07-25 | 17G1723-03 | ND |
| 2017-07-25 | 17G1723-02 | ND |
| 2017-07-25 | 17G1719-02 | ND |
| 2017-07-25 | 17G1719-01 | ND |
| 2017-12-12 | 17L0466-01 | ND |
| 2017-12-12 | 17L0466-02 | ND |
| 2018-05-15 | 18E1223-01 | ND |
| 2018-05-15 | 18E1223-02 | ND |