2,4,5-TP (Silvex)
Hilltop Ridge Apartments Phase Two
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 | ND | 6 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 6 | 0 | ND |
2018 | ND | 6 | 0 | ND |
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 |
---|---|---|
2015-12-08 | 312747RS28-1504 | ND |
2015-12-08 | 312748RS28-1504 | ND |
2015-12-08 | 312749RS28-1504 | ND |
2015-12-08 | 312750RS28-1504 | ND |
2015-12-08 | 312751RS28-1504 | ND |
2015-12-08 | 312746RS28-1504 | ND |
2017-10-26 | 3807929-04 | ND |
2017-10-26 | 3807929-06 | ND |
2017-10-26 | 3807929-05 | ND |
2017-10-26 | 3807917-03 | ND |
2017-10-26 | 3807917-02 | ND |
2017-10-26 | 3807917-01 | ND |
2018-10-26 | 3807917-2843 | ND |
2018-10-26 | 3807917-2845 | ND |
2018-10-26 | 3807917-2847 | ND |
2018-10-26 | 3807929-2821 | ND |
2018-10-26 | 3807929-2829 | ND |
2018-10-26 | 3807929-2831 | ND |