2,4,5-TP (Silvex)
Pawtucket
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.
32
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 | 16 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 16 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-01-27 | 1401232-01_PE21 | ND |
| 2014-04-07 | 1402198-02_PE21 | ND |
| 2014-04-07 | 1402198-01_PE21 | ND |
| 2014-04-07 | 1402198-06_PE21 | ND |
| 2014-04-07 | 1402198-05_PE21 | ND |
| 2014-04-07 | 1402198-04_PE21 | ND |
| 2014-04-07 | 1402198-03_PE21 | ND |
| 2014-04-07 | 1402198-07_PE21 | ND |
| 2014-07-14 | 1403738-01_PE21 | ND |
| 2014-10-06 | 1405270-01_PE21 | ND |
| 2014-10-06 | 1405270-07_PE21 | ND |
| 2014-10-06 | 1405270-06_PE21 | ND |
| 2014-10-06 | 1405270-05_PE21 | ND |
| 2014-10-06 | 1405270-04_PE21 | ND |
| 2014-10-06 | 1405270-03_PE21 | ND |
| 2014-10-06 | 1405270-02_PE21 | ND |
| 2017-02-01 | 1701096-01_PE21 | ND |
| 2017-04-17 | 1701862-05_PE21 | ND |
| 2017-04-17 | 1701862-08_PE21 | ND |
| 2017-04-17 | 1701862-04_PE21 | ND |
| 2017-04-17 | 1701862-03_PE21 | ND |
| 2017-04-17 | 1701862-01_PE21 | ND |
| 2017-04-17 | 1701862-02_PE21 | ND |
| 2017-04-17 | 1701862-06_PE21 | ND |
| 2017-07-14 | 1703211-01_PE21 | ND |
| 2017-10-03 | 1704572-06_PE21 | ND |
| 2017-10-03 | 1704572-05_PE21 | ND |
| 2017-10-03 | 1704572-04_PE21 | ND |
| 2017-10-03 | 1704572-03_PE21 | ND |
| 2017-10-03 | 1704572-02_PE21 | ND |
| 2017-10-03 | 1704572-01_PE21 | ND |
| 2017-11-01 | 1704846-01_PE21 | ND |