2,4,5-TP (Silvex)
Mobile Area Water and Sewer
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.
14
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-03-19 | 14C0301-1S | ND |
| 2014-05-05 | 14E0050-2 | ND |
| 2015-03-16 | 15C0200-1S | ND |
| 2015-03-16 | 15C0199-1S | ND |
| 2015-05-18 | 15E0249-1S | ND |
| 2016-03-23 | 1005-032316-2 | ND |
| 2016-03-23 | 16C-0318-SOC-001 | ND |
| 2016-07-19 | 16G0016-1 | ND |
| 2017-03-15 | 17C0233-1 | ND |
| 2017-05-10 | 17E0011-01S | ND |
| 2017-05-10 | 17E011-01 | ND |
| 2018-03-14 | 2072434001A | ND |
| 2019-03-07 | 2097741002_ISOC | ND |
| 2019-05-02 | 20103185002_ISOC | ND |