2,4,5-TP (Silvex)
Roswell Municipal Water System
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.
26
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 | 13 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 13 | 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 |
|---|---|---|
| 2014-02-12 | 1402577-005A | ND |
| 2014-02-12 | 1402572-005A | ND |
| 2014-02-12 | 1402578-005A | ND |
| 2014-02-12 | 1402580-005A | ND |
| 2014-02-12 | 1402579-005A | ND |
| 2014-02-12 | 1402573-005A | ND |
| 2014-02-12 | 1402576-005A | ND |
| 2014-03-05 | 1403368-005A | ND |
| 2014-03-05 | 1403365-005A | ND |
| 2014-03-05 | 1403364-005A | ND |
| 2014-03-05 | 1403366-005A | ND |
| 2014-03-05 | 1403367-005A | ND |
| 2014-03-05 | 1403329-005A | ND |
| 2017-07-11 | 2017020127 | ND |
| 2017-07-11 | 2017020126 | ND |
| 2017-07-11 | 2017020125 | ND |
| 2017-07-11 | 2017020128 | ND |
| 2017-08-08 | 2017023140 | ND |
| 2017-08-08 | 2017023141 | ND |
| 2017-08-08 | 2017023142 | ND |
| 2017-08-08 | 2017023143 | ND |
| 2017-10-10 | 2017029408 | ND |
| 2017-10-10 | 2017029407 | ND |
| 2017-10-10 | 2017029409 | ND |
| 2017-10-10 | 2017029405 | ND |
| 2017-10-10 | 2017029406 | ND |