2,4,5-TP (Silvex)
Nashville, Town of
NOTE: Nashville, Town of purchases water from City of Rocky Mount which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by City of Rocky Mount.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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
NOTE: Nashville, Town of purchases water from City of Rocky Mount which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by City of Rocky Mount.
| Date | Lab ID | Result |
|---|---|---|
| 2019-06-11 | 37729_19-24433 | ND |
| 2019-06-27 | 37729_19-27227A | ND |
| 2019-06-27 | 37729_19-27227 | ND |
| 2019-08-12 | 37729_19-34935 | ND |
| 2019-08-12 | 37729_19-34939 | ND |
| 2020-05-12 | 8146-051220-E01S | ND |
| 2020-06-19 | 8146-061920-E02S | ND |
| 2020-07-07 | 8146B-070720-E01S | ND |
| 2020-07-14 | 8146-071420-E02S | ND |
| 2020-11-23 | 8146-112320-E01S | ND |
| 2021-01-26 | 8146-012621-E01S | ND |
| 2021-04-06 | 8146-040621-E01S | ND |
| 2021-09-07 | 8146-090721-E01S | ND |
| 2021-10-28 | 8146-102821-E01S | ND |
| 2022-02-10 | 8146-021022-E01S | ND |
| 2022-06-02 | 8146-060222-E01S | ND |
| 2022-12-07 | 8146-120722-E01S | ND |
| 2023-04-10 | 8146A-041023-E02S | ND |
| 2023-06-14 | 8146-061423-E01S | ND |
| 2023-08-07 | 8146-080723-E02S | ND |
| 2023-09-07 | 8146-090723-E01S | ND |
| 2023-10-04 | 8146-100423-E01S | ND |
| 2023-10-04 | 8146-100423-E02S | ND |