2,4,5-TP (Silvex)
Cape Fear Public Utility Authority - New Hanover County
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 | 2 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 6 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-01-15 | 201401160704 | ND |
2014-04-10 | 201404120236 | ND |
2015-09-23 | ND | |
2015-09-29 | ND | |
2015-11-12 | ND | |
2015-11-16 | ND | |
2016-07-14 | 3494005 | ND |
2016-10-13 | 3564823 | ND |
2017-01-17 | 3622895 | ND |
2017-04-10 | 3671290 | ND |
2018-08-02 | 92394444001SOC | ND |
2018-08-02 | 92394441001SOC | ND |
2018-10-16 | 4091751 | ND |
2018-10-16 | 4091759 | ND |
2018-11-07 | 4114200 | ND |
2018-11-07 | 4114205 | ND |
2019-07-25 | 4365272 | ND |
2019-09-12 | 4419231 | ND |
2019-10-01 | 4443584 | ND |
2019-10-01 | 4441727 | ND |