2,4,5-TP (Silvex)
Franklin Water Systems 3
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 | 5 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 3 | 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 |
---|---|---|
2016-06-08 | Q1622883003 | ND |
2016-06-08 | Q1622883004 | ND |
2016-09-28 | Q1640760002 | ND |
2016-12-13 | Q1654192001 | ND |
2016-12-13 | Q1654192002 | ND |
2017-03-21 | Q1711955015 | ND |
2017-03-21 | Q1711955016 | ND |
2017-06-07 | AD86941 | ND |
2017-06-21 | Q1725672003 | ND |
2017-07-25 | Q1730588013 | ND |
2017-07-25 | Q1730588014 | ND |
2019-09-11 | Q1963952011 | ND |
2019-09-11 | Q1963952012 | ND |
2019-09-11 | Q1963952013 | ND |