2,4,5-TP (Silvex)
North Lenoir 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.
51
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 |
|---|---|---|---|---|
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 12 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 12 | 0 | ND |
| 2018 | ND | 10 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-02-10 | 8540-021014-E4AS | ND |
| 2014-05-06 | 8540-050614-E08S | ND |
| 2014-05-06 | 8540-050614-E11S | ND |
| 2014-05-06 | 8540-050614-E09S | ND |
| 2014-05-12 | 8540-051214-E02S | ND |
| 2014-05-12 | 8540-051214-E10S | ND |
| 2014-06-05 | 8540-060514-E4AS | ND |
| 2014-08-06 | 8540-080614-E09S | ND |
| 2014-08-06 | 8540-080614-E10S | ND |
| 2014-08-06 | 8540-080614-E11S | ND |
| 2014-08-07 | 8540-080714-E02S | ND |
| 2014-08-07 | 8540-080714-E08S | ND |
| 2015-01-30 | ND | |
| 2015-01-30 | ND | |
| 2015-01-30 | ND | |
| 2015-04-07 | ND | |
| 2015-04-07 | ND | |
| 2015-04-07 | ND | |
| 2015-07-13 | ND | |
| 2015-07-13 | ND | |
| 2015-07-13 | ND | |
| 2015-10-07 | ND | |
| 2015-10-07 | ND | |
| 2015-10-07 | ND | |
| 2016-08-09 | 8540-080916-E18S | ND |
| 2016-11-07 | 8540-110716-E18S | ND |
| 2017-02-06 | 8540-020617-E4AS | ND |
| 2017-05-08 | 8540-050817-E08S | ND |
| 2017-05-08 | 8540-050817-E15S | ND |
| 2017-05-08 | 8540-050817-E02S | ND |
| 2017-05-10 | 8540-051017-E09S | ND |
| 2017-05-10 | 8540-051017-E11S | ND |
| 2017-06-12 | 8540-061217-E4AS | ND |
| 2017-08-14 | 8540-081417-E02S | ND |
| 2017-08-14 | 8540-081417-E08S | ND |
| 2017-08-14 | 8540-081417-E09S | ND |
| 2017-08-14 | 8540-081417-E11S | ND |
| 2017-08-14 | 8540-081417-E15S | ND |
| 2018-01-11 | 8540-011118-E17S | ND |
| 2018-01-11 | 8540-011118-E16S | ND |
| 2018-04-09 | 8540-040918-E16S | ND |
| 2018-04-09 | 8540-040918-E17S | ND |
| 2018-07-09 | 8540-070918-E12S | ND |
| 2018-07-09 | 8540-070918-E13S | ND |
| 2018-07-16 | 8540-071618-E14S | ND |
| 2018-10-02 | 8540-100218-E12S | ND |
| 2018-10-02 | 8540-100218-E13S | ND |
| 2018-10-02 | 8540-100218-E14S | ND |
| 2019-04-08 | 8540-040819-E02S | ND |
| 2019-08-07 | 8540-080719-E18S | ND |
| 2019-11-04 | 8540-110419-E18S | ND |