2,4,5-TP (Silvex)
Carmel Water Department
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 | 2 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 8 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 | 2014020479RS28-1 | ND |
| 2014-05-15 | 2014051070RS28-1 | ND |
| 2015-05-14 | 2015051024RS28-1 | ND |
| 2015-05-14 | 2015051021RS28-1 | ND |
| 2015-05-14 | 2015051022RS28-1 | ND |
| 2015-05-14 | 2015051023RS28-1 | ND |
| 2015-08-13 | 2015082057RS28-1 | ND |
| 2015-08-13 | 2015082059RS28-1 | ND |
| 2015-08-13 | 2015082058RS28-1 | ND |
| 2015-08-13 | 2015082055RS28-1 | ND |
| 2018-05-15 | 2018052237RS28-1 | ND |
| 2018-05-15 | 2018052238RS28-1 | ND |
| 2018-05-15 | 2018052239RS28-1 | ND |
| 2018-05-15 | 2018052240RS28-1 | ND |
| 2018-08-13 | 2018082800RS28-1 | ND |
| 2018-08-13 | 2018082804RS28-1 | ND |
| 2018-08-13 | 2018082805RS28-1 | ND |
| 2018-08-13 | 2018082809RS28-1 | ND |