2,4,5-TP (Silvex)
Lakeside WD
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.
18
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 | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2014-12-15 | 9588-016-1300 | ND |
| 2014-12-15 | 9588-009-1300 | ND |
| 2014-12-15 | 9588-002-1300 | ND |
| 2015-12-14 | 9588-002-0800 | ND |
| 2015-12-14 | 9588-009-0900 | ND |
| 2015-12-14 | 9588-016-0830 | ND |
| 2016-12-19 | 5867-002-1100 | ND |
| 2016-12-19 | 5867-016-1100 | ND |
| 2016-12-19 | 5867-009-1100 | ND |
| 2017-12-18 | 9588-009-1130 | ND |
| 2017-12-18 | 9588-016-1200 | ND |
| 2017-12-18 | 9588-002-1100 | ND |
| 2018-11-26 | 9588-009-1430 | ND |
| 2018-11-26 | 9588-016-1430 | ND |
| 2018-11-26 | 9588-002-1430 | ND |
| 2019-12-17 | 9588-009-0915 | ND |
| 2019-12-17 | 9588-016-1041 | ND |
| 2019-12-18 | 9588-002-0826 | ND |