2,4,5-TP (Silvex)
Bladen County Water Dist-West Bladen
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 | 11 | 0 | ND |
2015 | ND | 7 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 8 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-01-02 | 8527-010214-E05S | ND |
2014-01-02 | 8527-010214-E04S | ND |
2014-04-02 | 8527-040214-E11S | ND |
2014-05-07 | 8527-050714-E04S | ND |
2014-05-07 | 8527-050714-E05S | ND |
2014-07-02 | 8527-070214-E11S | ND |
2014-07-02 | 8527-070214-L06S | ND |
2014-09-03 | 8527-090314-E08S | ND |
2014-10-01 | 8527-100114-E08S | ND |
2014-10-01 | 8527-100114-L06S | ND |
2014-12-03 | 8527-120314-E05S | ND |
2015-01-21 | ND | |
2015-01-21 | ND | |
2015-02-04 | ND | |
2015-04-01 | ND | |
2015-05-06 | ND | |
2015-08-05 | ND | |
2015-10-01 | ND | |
2016-02-03 | 8527-020316-E05S | ND |
2017-01-04 | 8527-010417-E04S | ND |
2017-02-01 | 8527-020117-E05S | ND |
2017-04-05 | 8527-040517-E11S | ND |
2017-07-05 | 8527-070517-E11S | ND |
2017-07-05 | 8527-070517-L06S | ND |
2017-09-05 | 8527-090517-E08S | ND |
2017-10-03 | 8527-100317-E08S | ND |
2017-10-03 | 8527-100317-L06S | ND |
2018-01-03 | 8527-010318-E09S | ND |
2018-02-07 | 8527-020718-E05S | ND |
2018-04-10 | 8527-041018-E09S | ND |
2019-02-06 | 8527-020619-E05S | ND |