2,4,5-TP (Silvex)
City of Baltimore
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.
19
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 | 5 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 5 | 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 |
|---|---|---|
| 2014-01-29 | 0300002_02_00348 | ND |
| 2014-01-29 | 0300002_01_00348 | ND |
| 2015-06-22 | E15004053001 | ND |
| 2015-06-22 | E15004053003 | ND |
| 2015-12-10 | ASH_T | ND |
| 2015-12-10 | PLTS_1 | ND |
| 2015-12-10 | PLT_2 | ND |
| 2016-05-23 | E16004413006 | ND |
| 2016-05-23 | E16004413004 | ND |
| 2016-05-23 | E16004413002 | ND |
| 2017-06-20 | E17005034001 | ND |
| 2017-06-20 | E17005035001 | ND |
| 2018-05-14 | E18004105001 | ND |
| 2018-05-14 | E18004100003 | ND |
| 2018-10-31 | 2347944003 | ND |
| 2018-10-31 | 2347944002 | ND |
| 2018-10-31 | 2347944001 | ND |
| 2019-07-31 | E20000422001 | ND |
| 2019-07-31 | E20000423001 | ND |