2,4,5-TP (Silvex)
City of Fort Worth
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2014-03-14 | Q1408426002 | ND |
| 2014-04-23 | Q1412967008 | ND |
| 2015-01-28 | Q1503441013 | ND |
| 2016-02-17 | Q1607005001 | ND |
| 2016-02-17 | Q1607005038 | ND |
| 2016-02-17 | Q1607005037 | ND |
| 2016-04-20 | Q1615700005 | ND |
| 2016-06-13 | Q1623857005 | ND |
| 2017-02-22 | Q1707727003 | ND |
| 2018-01-24 | Q1802705015 | ND |
| 2019-01-23 | Q1903345006 | ND |
| 2019-04-24 | Q1916570002 | ND |
| 2019-05-22 | Q1927658007 | ND |
| 2019-05-22 | Q1927658014 | ND |
| 2019-06-17 | Q1936867006 | ND |
| 2019-07-24 | Q1947967026 | ND |
| 2019-10-23 | Q1973436021 | ND |