2,4,5-TP (Silvex)
Fayette Water Supply Corporation West
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 | 3 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-03-06 | AE17076 | ND |
| 2018-03-06 | AE17086 | ND |
| 2018-04-24 | AE23797 | ND |
| 2020-02-12 | AE98219 | ND |
| 2020-02-12 | AE98220 | ND |
| 2020-04-13 | AF06411 | ND |
| 2021-03-08 | AF45790 | ND |
| 2021-04-28 | AF51539 | ND |
| 2023-03-09 | AG32470 | ND |
| 2023-03-09 | AG32471 | ND |
| 2023-04-04 | AG35441 | ND |