2,4,5-TP (Silvex)
City of North Platte
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.
18
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 | 8 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-02-12 | 278803 | ND |
| 2014-05-19 | 295517 | ND |
| 2015-02-24 | 343556 | ND |
| 2015-02-24 | 343557 | ND |
| 2015-04-22 | 354044 | ND |
| 2015-05-20 | 357775 | ND |
| 2015-05-20 | 357776 | ND |
| 2015-07-08 | 375068 | ND |
| 2015-10-05 | 375842 | ND |
| 2015-10-28 | 375841 | ND |
| 2017-01-30 | ND | |
| 2017-04-17 | ND | |
| 2018-05-14 | 546338 | ND |
| 2018-08-14 | 560696 | ND |
| 2019-02-11 | 591774 | ND |
| 2019-04-23 | 604869 | ND |
| 2019-07-30 | 621569 | ND |
| 2019-11-12 | 638940 | ND |