2,4,5-TP (Silvex)
City of Santa Fe Water 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.
15
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 | 7 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-04-10 | 2014011959 | ND |
| 2014-06-11 | 2014019060 | ND |
| 2014-07-01 | 2014021157 | ND |
| 2014-07-01 | 2014021158 | ND |
| 2014-08-26 | 2014027732 | ND |
| 2014-09-30 | 2014031203 | ND |
| 2014-09-30 | 2014031202 | ND |
| 2016-09-28 | 2016028732 | ND |
| 2017-02-09 | 1702573-005 | ND |
| 2017-02-13 | 1702764-005 | ND |
| 2017-02-13 | 1702761-002 | ND |
| 2017-11-08 | 1711574-005 | ND |
| 2017-11-08 | 1711572-005 | ND |
| 2017-11-15 | 1711978-005 | ND |
| 2017-11-15 | 1711981-005 | ND |