2,4,5-TP (Silvex)
Upper Saucon Township Water Supply
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 | 5 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 6 | 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 |
---|---|---|
2014-04-09 | 14040108-01 | ND |
2014-04-09 | 14040116-01 | ND |
2014-08-05 | 14040122-01 | ND |
2014-08-05 | 14040123-01 | ND |
2014-12-17 | 14100700-01 | ND |
2015-01-21 | 12322867 | ND |
2015-04-24 | 12924583 | ND |
2015-08-05 | 13172922 | ND |
2017-04-05 | 15986844 | ND |
2017-04-19 | 15986978 | ND |
2017-04-19 | 15987006 | ND |
2017-07-05 | 16459936 | ND |
2017-07-19 | 16614818 | ND |
2017-07-19 | 16614846 | ND |