2,4,5-TP (Silvex)
East Cocalico Township
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.
50
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 | 23 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 24 | 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 |
|---|---|---|
| 2014-05-23 | 14030666-01 | ND |
| 2014-05-23 | 14030644-01 | ND |
| 2014-05-23 | 14030508-01 | ND |
| 2014-05-23 | 14030500-01 | ND |
| 2014-05-23 | 14030493-01 | ND |
| 2014-05-30 | 14030255-01 | ND |
| 2014-05-30 | 14030502-01 | ND |
| 2014-05-30 | 14030498-01 | ND |
| 2014-05-30 | 14030498-01 | ND |
| 2014-05-30 | 14030491-01 | ND |
| 2014-05-30 | 14030491-01 | ND |
| 2014-05-30 | 14030488-01 | ND |
| 2014-05-30 | 14030255-01 | ND |
| 2014-08-25 | 14030494-01 | ND |
| 2014-08-25 | 14030499-01 | ND |
| 2014-08-25 | 14030501-01 | ND |
| 2014-08-25 | 14030492-01 | ND |
| 2014-08-25 | 14030503-01 | ND |
| 2014-08-25 | 14030513-01 | ND |
| 2014-08-25 | 14030489-01 | ND |
| 2014-08-25 | 14030645-01 | ND |
| 2014-08-25 | 14030667-01 | ND |
| 2014-08-25 | 14030256-01 | ND |
| 2016-01-25 | 13957849 | ND |
| 2016-04-19 | 14216806 | ND |
| 2016-11-10 | 15336693 | ND |
| 2017-03-23 | 15903158 | ND |
| 2017-04-27 | 16220168 | ND |
| 2017-04-27 | 16220195 | ND |
| 2017-04-27 | 16220142 | ND |
| 2017-04-27 | 16220301 | ND |
| 2017-04-28 | 16220248 | ND |
| 2017-04-28 | 16220354 | ND |
| 2017-04-28 | 16220328 | ND |
| 2017-04-28 | 16220380 | ND |
| 2017-04-28 | 16220274 | ND |
| 2017-04-28 | 16220407 | ND |
| 2017-04-28 | 16220222 | ND |
| 2017-08-21 | 16846142 | ND |
| 2017-08-21 | 16846200 | ND |
| 2017-08-21 | 16845939 | ND |
| 2017-08-21 | 16846171 | ND |
| 2017-08-21 | 16846113 | ND |
| 2017-08-21 | 16846084 | ND |
| 2017-08-21 | 16846055 | ND |
| 2017-08-21 | 16846026 | ND |
| 2017-08-21 | 16845997 | ND |
| 2017-08-21 | 16845968 | ND |
| 2017-09-12 | 16846248 | ND |
| 2017-10-30 | 17130703 | ND |