2,4,5-TP (Silvex)
Socorro 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 8 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 1 | 0 | ND |
2017 | ND | 4 | 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 |
---|---|---|
2014-03-19 | 2014009387 | ND |
2014-03-19 | 2014009385 | ND |
2014-03-19 | 2014009388 | ND |
2014-03-19 | 2014009389 | ND |
2014-04-09 | 2014012069 | ND |
2014-04-09 | 2014012070 | ND |
2014-04-09 | 2014012071 | ND |
2014-04-09 | 2014012068 | ND |
2016-08-25 | 1608G20-001A | ND |
2017-03-22 | 1703C17-005 | ND |
2017-03-22 | 1703C16-005 | ND |
2017-03-22 | 1703C14-005 | ND |
2017-03-22 | 1703C15-005 | ND |