2,4,5-TP (Silvex)
University of Connecticut - Main Campus
NOTE: University of Connecticut - Main Campus purchases water from Connecticut Water Company - Northern Region-Western System which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by Connecticut Water Company - Northern Region-Western 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 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 1 | 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
NOTE: University of Connecticut - Main Campus purchases water from Connecticut Water Company - Northern Region-Western System which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by Connecticut Water Company - Northern Region-Western System.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-31 | BZ82691SOCR | ND |
| 2018-01-31 | BZ82950SOC2 | ND |
| 2018-06-28 | CA80715SOC2 | ND |
| 2018-07-26 | CA99050 | ND |
| 2019-01-09 | SOC 200518249 | ND |
| 2019-01-10 | SOCR 200518412 | ND |
| 2019-01-10 | SOCR 200489130 | ND |
| 2019-03-11 | SOC 200524185 | ND |
| 2020-01-15 | SOCR 200563111 | ND |
| 2021-03-05 | SOCR 200608709 | ND |
| 2022-01-31 | CK26558 | ND |
| 2022-02-01 | CK27434 | ND |
| 2022-02-28 | CK76167 | ND |
| 2022-04-18 | CL11075 | ND |
| 2022-08-26 | CM16197 | ND |
| 2022-08-26 | CM16200 | ND |
| 2022-09-07 | CM25593 | ND |
| 2022-09-08 | CM25670 | ND |
| 2022-09-20 | CM37292 | ND |
| 2022-09-20 | CM37296 | ND |
| 2022-10-04 | CM49624 | ND |
| 2022-10-04 | CM49621 | ND |
| 2022-10-06 | CM51510 | ND |
| 2022-10-06 | CM51504 | ND |
| 2022-10-06 | CM50872 | ND |
| 2022-11-03 | CM76536 | ND |
| 2023-01-18 | CN25096 | ND |