2,4,5-TP (Silvex)
Arizona Water Company - Pinal Valley
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.
40
Samples
0
Samples exceeding legal limit (MCL)
0
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 | N/A | 0 | 0 | N/A |
| 2020 | ND | 20 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 20 | 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 |
|---|---|---|
| 2020-04-27 | 20D2966-01 SOC | ND |
| 2020-04-27 | 20D2968-01 SOC | ND |
| 2020-04-27 | 20D2972-01 SOC | ND |
| 2020-04-27 | 20D2974-01 SOC | ND |
| 2020-04-27 | 20D2975-01 | ND |
| 2020-04-27 | 20D2977-01 SOC | ND |
| 2020-04-27 | 20D2978-01 SOC | ND |
| 2020-04-27 | 20D2982-01 SOC | ND |
| 2020-04-27 | 20D2984-01 | ND |
| 2020-04-27 | 20D2960-01 SOC | ND |
| 2020-10-07 | 20J0914-01 | ND |
| 2020-10-07 | 20J0921-01 | ND |
| 2020-10-07 | 20J0920-01 | ND |
| 2020-10-07 | 20J0919-01 | ND |
| 2020-10-07 | 20J0918-01 | ND |
| 2020-10-07 | 20J0917-01 | ND |
| 2020-10-07 | 20J0916-01 | ND |
| 2020-10-07 | 20J0915-01 | ND |
| 2020-10-07 | 20J0913-01 | ND |
| 2020-10-14 | 20J1695-01 | ND |
| 2023-04-25 | 23D3072-01SOC | ND |
| 2023-04-25 | 23D3093-01SOC | ND |
| 2023-04-25 | 23D3092-01SOC | ND |
| 2023-04-25 | 23D3091-01SOC | ND |
| 2023-04-25 | 23D3090-01SOC | ND |
| 2023-04-25 | 23D3089-01SOC | ND |
| 2023-04-25 | 23D3087-01SOC | ND |
| 2023-04-25 | 23D3086-01SOC | ND |
| 2023-04-25 | 23D3076-01SOC | ND |
| 2023-06-12 | 23F1524-01SOC | ND |
| 2023-07-19 | 23G2542-01 | ND |
| 2023-07-19 | 23G2543-01 | ND |
| 2023-07-24 | 23G3041-01 | ND |
| 2023-07-25 | 23G3232-01 | ND |
| 2023-07-25 | 23G3236-01 | ND |
| 2023-07-25 | 23G3240-01 | ND |
| 2023-07-25 | 23G3242-01 | ND |
| 2023-07-25 | 23G3254-01 | ND |
| 2023-07-25 | 23G3257-01 | ND |
| 2023-07-25 | 23G3259-01 | ND |