2,4,5-TP (Silvex)
Jug Mountain Ranch Subdivision
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 | N/A | 0 | 0 | N/A |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2016-10-18 | S1648027 | ND |
2017-10-24 | S1749857 | ND |
2018-03-29 | S1813633 | ND |
2018-04-20 | S1817532 | ND |
2018-07-08 | S1831748 | ND |
2018-10-07 | S1849957 | ND |
2019-01-20 | S1902935 | ND |
2019-04-10 | S1916137 | ND |
2019-07-21 | S1935523 | ND |
2019-10-15 | S1952206 | ND |