2,4,5-TP (Silvex)
City of Edmond - Arcadia Lake
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.
47
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 47 | 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 |
|---|---|---|
| 2019-08-28 | BH29012-17 | ND |
| 2019-08-28 | BH29012-06 | ND |
| 2019-08-28 | BH29012-07 | ND |
| 2019-08-28 | BH29012-08 | ND |
| 2019-08-28 | BH29012-09 | ND |
| 2019-08-28 | BH29012-10 | ND |
| 2019-08-28 | BH29012-11 | ND |
| 2019-08-28 | BH29012-12 | ND |
| 2019-08-28 | BH29012-13 | ND |
| 2019-08-28 | BH29012-14 | ND |
| 2019-08-28 | BH29012-15 | ND |
| 2019-08-28 | BH29012-16 | ND |
| 2019-08-28 | BH29012-05 | ND |
| 2019-08-28 | BH29012-18 | ND |
| 2019-08-28 | BH29012-19 | ND |
| 2019-08-28 | BH29012-20 | ND |
| 2019-08-28 | BH29012-21 | ND |
| 2019-08-28 | BH29012-22 | ND |
| 2019-08-28 | BH29012-23 | ND |
| 2019-08-28 | BH29012-24 | ND |
| 2019-08-28 | BH29012-25 | ND |
| 2019-08-28 | BH29012-26 | ND |
| 2019-08-28 | BH29012-27 | ND |
| 2019-08-28 | BH29012-28 | ND |
| 2019-08-28 | BH29012-04 | ND |
| 2019-08-28 | BH29012-03 | ND |
| 2019-08-28 | BH29012-02 | ND |
| 2019-08-28 | BH29012-01 | ND |
| 2019-10-08 | BJ08028-01 | ND |
| 2019-10-14 | BJ15091-01 | ND |
| 2019-10-14 | BJ15091-02 | ND |
| 2019-10-14 | BJ15091-03 | ND |
| 2019-10-14 | BJ15091-04 | ND |
| 2019-10-14 | BJ15091-05 | ND |
| 2019-10-14 | BJ15091-06 | ND |
| 2019-10-14 | BJ15091-07 | ND |
| 2019-10-14 | BJ15091-08 | ND |
| 2019-10-14 | BJ15091-09 | ND |
| 2019-10-14 | BJ15091-10 | ND |
| 2019-10-14 | BJ15091-11 | ND |
| 2019-10-14 | BJ15091-12 | ND |
| 2019-10-14 | BJ15091-13 | ND |
| 2019-10-14 | BJ15091-14 | ND |
| 2019-10-14 | BJ15091-15 | ND |
| 2019-10-14 | BJ15091-16 | ND |
| 2019-10-14 | BJ15091-17 | ND |
| 2019-12-10 | BL10059-01 | ND |