2,4,5-TP (Silvex)
City of Talladega Water and Sewer Board
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.
45
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 | ND | 15 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 12 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2015-04-23 | 1504-00337-1S | ND |
| 2015-05-13 | 1505-00191-1 | ND |
| 2015-05-13 | 1505-00191-2 | ND |
| 2015-05-13 | 1505-00191-4 | ND |
| 2015-05-13 | 1505-00191-3 | ND |
| 2015-05-13 | 1505-00191-7 | ND |
| 2015-05-21 | 1505-00279-1 | ND |
| 2015-08-10 | 1508-00125-1 | ND |
| 2015-09-02 | 1509-00037-1S | ND |
| 2015-11-10 | 1511-00165-3 | ND |
| 2015-11-10 | 1511-00165-5 | ND |
| 2015-11-10 | 1511-00165-4 | ND |
| 2015-11-10 | 1511-00165-2 | ND |
| 2015-11-10 | 1511-00165-1 | ND |
| 2015-11-19 | 1511-00267-1 | ND |
| 2016-02-10 | 1602-00225-11 | ND |
| 2016-05-11 | 1605-00177-8 | ND |
| 2016-05-11 | 1605-00177-11 | ND |
| 2016-08-08 | 1608-00121-11 | ND |
| 2016-11-16 | 1611-00281-1 | ND |
| 2016-11-16 | 1611-00281-5 | ND |
| 2017-02-15 | 1702-00271-003 | ND |
| 2017-02-15 | 1702-00271 | ND |
| 2017-05-10 | 1705-00225-8 | ND |
| 2017-08-16 | 1708-00299-10 | ND |
| 2017-08-16 | 1708-00299-6 | ND |
| 2017-10-11 | 1710-00181-4 | ND |
| 2018-01-10 | 1801-00152-13 | ND |
| 2018-05-16 | 1805-00312-4 | ND |
| 2018-05-16 | 1805-00312-12 | ND |
| 2018-05-16 | 1805-00312-1 | ND |
| 2018-05-16 | 1805-00312-3 | ND |
| 2018-05-16 | 1805-00312-2 | ND |
| 2018-07-11 | 1807-00187-008 | ND |
| 2018-10-10 | 1810-00220-010 | ND |
| 2018-10-10 | 1810-00220-004 | ND |
| 2018-10-10 | 1810-00220-007 | ND |
| 2018-10-10 | 1810-00220-001 | ND |
| 2018-10-10 | 1810-00220-005 | ND |
| 2019-01-16 | 1901-00239-001 | ND |
| 2019-01-16 | 1901-00239-003 | ND |
| 2019-04-10 | 1904-00192-001 | ND |
| 2019-08-13 | 1908-00176-006 | ND |
| 2019-08-13 | 1908-00176-001 | ND |
| 2019-11-13 | 1911-00227-004 | ND |