2,4,5-TP (Silvex)
Eastern Pines Water Corp
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.
32
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 | ND | 14 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 14 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-02-05 | 8116-020514-E02S | ND |
| 2014-05-06 | 8116-050614-E02S | ND |
| 2014-05-06 | 8116-050614-E06S | ND |
| 2014-06-03 | 8116-060314-E08S | ND |
| 2014-06-04 | 8116-060414-E05S | ND |
| 2014-06-04 | 8116-060414-E09S | ND |
| 2014-06-09 | 8116-060914-E07S | ND |
| 2014-08-12 | 8116-081214-E08S | ND |
| 2014-08-13 | 8116-081314-E06S | ND |
| 2014-08-25 | 8116-082514-E05S | ND |
| 2014-08-25 | 8116-082514-E10S | ND |
| 2014-08-27 | 8116-082714-E09S | ND |
| 2014-09-03 | 8116-090314-E07S | ND |
| 2014-10-06 | 8116-100614-E10S | ND |
| 2016-05-11 | 8116-051116-E03S | ND |
| 2016-12-05 | 8116-120516-E03S | ND |
| 2017-01-06 | 8116-010617-E02S | ND |
| 2017-05-18 | 8116-051817-E02S | ND |
| 2017-05-18 | 8116-051817-E05S | ND |
| 2017-05-18 | 8116-051817-E06S | ND |
| 2017-05-18 | 8116-051817-E08S | ND |
| 2017-05-18 | 8116-051817-E09S | ND |
| 2017-09-27 | 8116-092717-E07S | ND |
| 2017-09-27 | 8116-092717-E10S | ND |
| 2017-10-23 | 8116-102317-E10S | ND |
| 2017-12-13 | 8116-121317-E05S | ND |
| 2017-12-13 | 8116-121317-E06S | ND |
| 2017-12-13 | 8116-121317-E07S | ND |
| 2017-12-13 | 8116-121317-E08S | ND |
| 2017-12-13 | 8116-121317-E09S | ND |
| 2019-06-13 | 8116-061319-E03S | ND |
| 2019-08-15 | 8116-081519-E03S | ND |