2,4,5-TP (Silvex)
Cape Fear Public Utility Authority - Wilmington
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 | 4 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 9 | 0 | ND |
2019 | ND | 9 | 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 |
---|---|---|
2014-02-05 | 201402060612 | ND |
2014-05-07 | 201405090681 | ND |
2014-08-06 | 201408070253 | ND |
2014-11-05 | 201411060235 | ND |
2015-02-12 | ND | |
2015-04-13 | ND | |
2015-05-12 | ND | |
2015-07-08 | ND | |
2015-08-17 | ND | |
2015-08-17 | ND | |
2015-11-12 | ND | |
2015-11-16 | ND | |
2016-04-07 | 3427045 | ND |
2016-11-01 | 3577048 | ND |
2016-11-01 | 3577060 | ND |
2017-01-17 | 3622926 | ND |
2017-01-17 | 3622932 | ND |
2018-02-13 | 3871684 | ND |
2018-04-30 | 3925326 | ND |
2018-05-09 | 3932361 | ND |
2018-07-10 | 92391593001SOC | ND |
2018-07-12 | 92391890001SOC | ND |
2018-08-02 | 92394426001SOC | ND |
2018-11-07 | 4114204 | ND |
2018-11-07 | 4114582 | ND |
2018-12-17 | 4152240 | ND |
2019-02-05 | 4189337 | ND |
2019-05-07 | 4286100 | ND |
2019-08-06 | 4377268 | ND |
2019-09-16 | 4424754 | ND |
2019-09-23 | 4434024 | ND |
2019-09-26 | 37729_19-41714 | ND |
2019-10-01 | 4441898 | ND |
2019-10-01 | 4443206 | ND |
2019-10-01 | 4443223 | ND |