2,4,5-TP (Silvex)
New Britain Water Department
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 | 6 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-04-16 | SOCR 200492175 | ND |
| 2018-04-16 | SOCR 200492173 | ND |
| 2018-04-16 | SOCR 200492174 | ND |
| 2018-04-16 | SOCR 200492172 | ND |
| 2019-04-25 | SOCR 200529602 | ND |
| 2019-04-25 | SOCR 200529605 | ND |
| 2019-04-25 | SOCR 200529603 | ND |
| 2019-04-25 | SOCR 200529604 | ND |
| 2020-04-22 | SOCR 200573261 | ND |
| 2020-04-22 | SOCR 200573264 | ND |
| 2020-04-22 | SOCR 200573262 | ND |
| 2020-04-22 | SOCR 200573263 | ND |
| 2020-05-12 | SOC 200575348 | ND |
| 2020-09-16 | SOC 200590476 | ND |
| 2021-04-20 | SOCR 200613887 | ND |
| 2021-04-20 | SOCR 200613886 | ND |
| 2021-04-20 | SOCR 200613885 | ND |
| 2021-04-20 | SOCR 200613884 | ND |
| 2021-09-28 | 300069325 300069326 | ND |
| 2022-04-20 | H300172353 300172354 | ND |
| 2022-04-20 | H300172362 300172363 | ND |
| 2022-04-20 | H300172356 300172357 | ND |
| 2022-04-20 | H300172359 300172360 | ND |
| 2022-05-24 | S300188084 300188129 | ND |
| 2022-09-19 | S300245682 300245683 | ND |
| 2023-04-17 | H300334377 300334378 | ND |
| 2023-04-17 | H300334386 300334387 | ND |
| 2023-04-17 | H300334380 300334381 | ND |
| 2023-04-17 | H300334383 300334384 | ND |
| 2023-05-22 | S300354391 300354392 | ND |