2,4,5-TP (Silvex)
Waterbury 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.
20
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 | 5 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-09-25 | RWA200405008SOC2 | ND |
| 2014-10-07 | RWA200405696SOCR | ND |
| 2014-10-07 | RWA200405697SOCR | ND |
| 2014-10-07 | RWA200405698SOCR | ND |
| 2014-11-13 | 20096SOC2 | ND |
| 2015-11-05 | RWA200428304SOCR | ND |
| 2015-11-05 | RWA200428305SOCR | ND |
| 2015-11-05 | RWA200428306SOCR | ND |
| 2016-10-13 | RWA200452356SOCR | ND |
| 2016-10-13 | RWA200452355SOCR | ND |
| 2016-10-13 | RWA200452354SOCR | ND |
| 2017-09-27 | 200478156SOC2 | ND |
| 2017-09-27 | 200478147SOCR | ND |
| 2017-09-27 | 200478150SOCR | ND |
| 2017-09-27 | 200478153SOCR | ND |
| 2018-10-17 | RWA200509564SOCR | ND |
| 2018-10-17 | RWA200509566SOCR | ND |
| 2018-10-17 | RWA200509568SOCR | ND |
| 2018-10-18 | RWA200509712SOC2 | ND |
| 2019-01-15 | RWA200518766SOC2 | ND |