2,4,5-TP (Silvex)
Dona Ana MDWCA
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.
17
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 | 6 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 5 | 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 |
|---|---|---|
| 2014-07-29 | 1408060-005A | ND |
| 2014-07-29 | 1408063-005A | ND |
| 2014-07-29 | 1408057-005A | ND |
| 2014-07-29 | 1408062-005A | ND |
| 2014-07-29 | 1408061-005A | ND |
| 2014-09-03 | 1409282-005A | ND |
| 2017-03-07 | 1703473-001 | ND |
| 2017-03-07 | 1703474-001 | ND |
| 2017-03-07 | 1703472-001 | ND |
| 2017-03-07 | 1703471-001 | ND |
| 2017-10-03 | 1710331-001 | ND |
| 2018-01-09 | 1801603-005 | ND |
| 2018-01-09 | 1801604-005 | ND |
| 2018-01-09 | 1801605-002 | ND |
| 2018-01-16 | 1801921-005 | ND |
| 2019-07-09 | 1907439-005 | ND |
| 2019-10-21 | 1910C28-002 | ND |