2,4,5-TP (Silvex)
Torrington Water Company
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.
17
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 |
|---|---|---|---|---|
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-05-06 | E405431-2SOC | ND |
| 2014-05-06 | E405431-1SOC | ND |
| 2015-05-05 | E505330-2SOC | ND |
| 2015-05-05 | E505330-1SOC | ND |
| 2015-05-18 | E505G82-1SOC | ND |
| 2016-05-10 | E605C46-1SOC | ND |
| 2016-05-10 | E605B58-2SOC | ND |
| 2016-05-10 | E605B58-1SOC | ND |
| 2016-08-09 | E608A65-1SOC | ND |
| 2017-05-09 | D7E0894-02SOCR | ND |
| 2017-05-09 | D7E0894-01SOCR | ND |
| 2018-05-08 | D8E0876-02SOCR | ND |
| 2018-05-08 | D8E0876-01SOCR | ND |
| 2019-05-14 | D9E1449-01SOC | ND |
| 2019-05-14 | D9E1476-02SOCR | ND |
| 2019-05-14 | D9E1476-01SOCR | ND |
| 2019-08-13 | D9H1460-01SOC | ND |