2,4,5-TP (Silvex)
Jones County Water System
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 | 2 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 8 | 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 |
|---|---|---|
| 2019-09-12 | 8754-091219-E07S | ND |
| 2019-10-25 | 8754-102519-E07S | ND |
| 2020-03-23 | 8754-032320-E8BS | ND |
| 2020-07-13 | 8754-071320-E8BS | ND |
| 2020-12-10 | 8754-121020-E02S | ND |
| 2020-12-10 | 8754-121020-E1AS | ND |
| 2020-12-10 | 8754-121020-E1BS | ND |
| 2021-02-23 | 8754-022321-E02S | ND |
| 2021-02-23 | 8754-022321-E1AS | ND |
| 2021-02-23 | 8754-022321-E1BS | ND |
| 2021-05-25 | 8754-052521-E1BS | ND |
| 2021-05-25 | 8754-052521-E1AS | ND |
| 2021-05-25 | 8754-052521-E02S | ND |
| 2022-02-28 | 8754-022822-EP1S | ND |
| 2022-05-18 | 8754-051822-EP1S | ND |
| 2022-08-03 | 8754-080322-E04S | ND |
| 2022-08-03 | 8754-080322-E07S | ND |
| 2022-08-03 | 8754-080322-EP1S | ND |
| 2022-11-15 | 8754-111522-EP1S | ND |
| 2022-11-16 | 8754-111622-E04S | ND |
| 2022-11-16 | 8754-111622-E07S | ND |
| 2023-01-25 | 8754-012523-EP1S | ND |
| 2023-06-13 | 8754-061323-E8BS | ND |
| 2023-06-13 | 8754-061323-EP1S | ND |
| 2023-07-25 | 37729_23-40162 | ND |