2,4,5-TP (Silvex)
Brooklyn Park
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-05-15 | 18E1224-01 | ND |
| 2018-08-13 | 18H1037-01 | ND |
| 2019-07-22 | 19G1527-03 | ND |
| 2019-10-17 | 19J1046-01 | ND |
| 2020-06-10 | 20F0843-02 | ND |
| 2020-07-24 | 20G1753-01 | ND |
| 2021-04-30 | 21D1962-01 | ND |
| 2021-09-28 | 21I1502-01 | ND |
| 2021-10-27 | 21J1490-01 | ND |
| 2022-02-02 | 22B0150-01 | ND |
| 2023-08-07 | 23H0586-01 | ND |
| 2023-10-11 | 23J0527-01 | ND |