2,4,5-TP (Silvex)
Dolgeville
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 | ND | 1 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 4 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-24 | D8J3289-01-SOC | ND |
| 2019-02-12 | 7079592-SOC | ND |
| 2019-09-05 | 795756-SOC | ND |
| 2019-12-02 | 801760-SOC | ND |
| 2020-02-19 | 70122489-SOC | ND |
| 2021-09-29 | 210929112-001-SOC | ND |
| 2022-02-09 | 220209098-001-SOC | ND |
| 2022-06-15 | 220215095-SOC | ND |
| 2022-08-10 | 220810108-SOC | ND |
| 2022-11-09 | 221109112-001-SOC | ND |
| 2023-02-21 | C079507-SOC | ND |
| 2023-05-16 | C080814-02-SOC | ND |
| 2023-08-08 | 70266776001-SOC | ND |
| 2023-12-07 | 70280460001-SOC | ND |