2,4,5-TP (Silvex)
Andalusia
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.
36
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 16 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 16 | 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 |
|---|---|---|
| 2015-02-17 | 150218036-3 | ND |
| 2015-02-17 | 150218036-5 | ND |
| 2015-02-17 | 150218036-2 | ND |
| 2015-02-17 | 150218036-1 | ND |
| 2015-02-17 | 150218036-4 | ND |
| 2015-06-29 | 150630013-1 | ND |
| 2015-06-29 | 150630013-2 | ND |
| 2015-06-29 | 150630013-3 | ND |
| 2015-10-01 | 151001030-2 | ND |
| 2015-10-01 | 151001030-7 | ND |
| 2015-10-01 | 151001030-6 | ND |
| 2015-10-01 | 151001030-5 | ND |
| 2015-10-01 | 151001030-4 | ND |
| 2015-10-01 | 151001030-3 | ND |
| 2015-10-01 | 151001030-1 | ND |
| 2015-12-01 | 151202069-1 | ND |
| 2016-01-26 | 160127041-1 | ND |
| 2016-07-14 | 160715001-1 | ND |
| 2018-01-22 | 180122027-4 | ND |
| 2018-01-22 | 180122027-1 | ND |
| 2018-01-22 | 180122027-2 | ND |
| 2018-01-22 | 180122027-3 | ND |
| 2018-01-23 | 180123051-2 | ND |
| 2018-01-23 | 180123051-3 | ND |
| 2018-01-23 | 180123051-4 | ND |
| 2018-01-23 | 180123051-1 | ND |
| 2018-07-25 | 180726037-002 | ND |
| 2018-07-25 | 180726037-004 | ND |
| 2018-07-25 | 180726037-003 | ND |
| 2018-07-25 | 180726037-001 | ND |
| 2018-10-23 | 18100604-004C | ND |
| 2018-10-23 | 18100604-003C | ND |
| 2018-10-23 | 18100604-002C | ND |
| 2018-10-23 | 18100604-001C | ND |
| 2019-02-25 | 19020736-001C | ND |
| 2019-05-22 | 19050741-001A | ND |