2,4,5-TP (Silvex)
Sanford Water District
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 16 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 18 | 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 |
---|---|---|
2014-06-02 | ND | |
2014-06-02 | ND | |
2014-06-03 | ND | |
2014-06-03 | ND | |
2014-06-04 | ND | |
2014-06-04 | ND | |
2014-06-05 | ND | |
2014-06-05 | ND | |
2014-08-06 | ND | |
2014-08-06 | ND | |
2014-08-11 | ND | |
2014-08-11 | ND | |
2014-08-12 | ND | |
2014-08-12 | ND | |
2014-08-12 | ND | |
2014-08-12 | ND | |
2017-05-30 | 217051122 | ND |
2017-05-30 | 217051125 | ND |
2017-05-30 | 217051144 | ND |
2017-05-30 | 217051147 | ND |
2017-05-31 | 217051230 | ND |
2017-05-31 | 217051227 | ND |
2017-05-31 | 217051224 | ND |
2017-06-14 | 217070613.01 | ND |
2017-06-14 | 217070610.01 | ND |
2017-08-23 | 217081092.01 | ND |
2017-08-23 | 217081088.01 | ND |
2017-08-23 | 217081086.01 | ND |
2017-08-29 | 217081324 | ND |
2017-08-29 | 217081320.01 | ND |
2017-08-29 | 217081328.01 | ND |
2017-08-30 | 217081401.01 | ND |
2017-08-30 | 217081405.01 | ND |
2017-08-30 | 217081409.01 | ND |