2,4,5-TP (Silvex)
Craven County Water System
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.
27
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 10 | 0 | ND |
| 2017 | ND | 11 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2016-09-23 | 7981-092316-W02S | ND |
| 2016-09-23 | 7981-092316-W03S | ND |
| 2016-09-23 | 7981-092316-W04S | ND |
| 2016-09-23 | 7981-092316-W05S | ND |
| 2016-09-23 | 7981-092316-W01S | ND |
| 2016-10-21 | 7981-102116-W01S | ND |
| 2016-10-21 | 7981-102116-W02S | ND |
| 2016-10-21 | 7981-102116-W03S | ND |
| 2016-10-21 | 7981-102116-W04S | ND |
| 2016-10-21 | 7981-102116-W05S | ND |
| 2017-05-24 | 7981-052417-W04S | ND |
| 2017-05-24 | 7981-052417-W05S | ND |
| 2017-05-24 | 7981-052417-W03S | ND |
| 2017-05-24 | 7981-052417-W02S | ND |
| 2017-05-24 | 7981-052417-W01S | ND |
| 2017-08-11 | 7981-081117-W01S | ND |
| 2017-08-11 | 7981-081117-W02S | ND |
| 2017-08-11 | 7981-081117-W03S | ND |
| 2017-08-11 | 7981-081117-W04S | ND |
| 2017-08-11 | 7981-081117-W05S | ND |
| 2017-12-12 | 7981-121217-EP1S | ND |
| 2018-02-28 | 7981-022818-EP1S | ND |
| 2018-06-19 | 7981-061918-EP1S | ND |
| 2018-08-15 | 7981-081518-EP1S | ND |
| 2018-11-27 | 7981-112718-EP1S | ND |
| 2019-03-21 | 7981-032119-EP1S | ND |
| 2019-05-09 | 7981-050919-EP1S | ND |