2,4,5-TP (Silvex)
Evansville Water Utility
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.
24
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-02-11 | 248371RS28-1401 | ND |
| 2014-05-12 | 257018RS28-1402 | ND |
| 2014-08-11 | 264644RS28-1403 | ND |
| 2014-11-05 | 275518RS525-1404 | ND |
| 2015-02-09 | 281783RS28-1501 | ND |
| 2015-05-05 | 289172RS28-1502 | ND |
| 2015-08-06 | 298387RS28-1503 | ND |
| 2015-11-09 | 305569RS28-1504 | ND |
| 2016-05-09 | 318417RS28-1602 | ND |
| 2016-08-08 | 328655RS28-1603 | ND |
| 2016-11-07 | 337133RS28-1604 | ND |
| 2017-02-07 | 347019RS28-1701 | ND |
| 2017-05-01 | 355245RS28-1702 | ND |
| 2017-08-01 | 367935RS28-1703 | ND |
| 2017-11-02 | 376314RS28-1704 | ND |
| 2017-11-02 | 37631401RS28-170 | ND |
| 2018-05-02 | 394371RS28-1802 | ND |
| 2018-08-01 | 408248RS28-1803 | ND |
| 2018-11-01 | 418312RS28-1804 | ND |
| 2019-02-11 | 429247RS28-1901 | ND |
| 2019-05-07 | 439621RS28-1902 | ND |
| 2019-08-01 | 46066601RS28-190 | ND |
| 2019-08-01 | 460666RS28-1903 | ND |
| 2019-11-04 | 471006RS28-1904 | ND |