2,4,5-TP (Silvex)
Lexington & Joseph Harp Correctional Institution
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.
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 | ND | 1 | 0 | ND |
2019 | ND | 30 | 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 |
---|---|---|
2018-02-27 | SDWA-1240279-00 | ND |
2019-01-15 | SDWA-1340143-00 | ND |
2019-01-15 | SDWA-1340142-00 | ND |
2019-01-15 | SDWA-1340141-00 | ND |
2019-01-15 | SDWA-1340140-00 | ND |
2019-01-15 | SDWA-1340139-00 | ND |
2019-01-15 | SDWA-1340138-00 | ND |
2019-02-26 | SDWA-1342977-00 | ND |
2019-02-26 | SDWA-1342976-00 | ND |
2019-02-26 | SDWA-1342975-00 | ND |
2019-02-26 | SDWA-1342974-00 | ND |
2019-02-26 | SDWA-1342973-00 | ND |
2019-02-26 | SDWA-1342972-00 | ND |
2019-05-06 | SDWA-1367731-00 | ND |
2019-05-06 | SDWA-1367733-00 | ND |
2019-05-06 | SDWA-1367732-00 | ND |
2019-05-06 | SDWA-1367730-00 | ND |
2019-05-06 | SDWA-1367729-00 | ND |
2019-05-06 | SDWA-1367728-00 | ND |
2019-08-13 | SDWA-1402245-00 | ND |
2019-08-13 | SDWA-1402244-00 | ND |
2019-08-13 | SDWA-1402243-00 | ND |
2019-08-13 | SDWA-1402242-00 | ND |
2019-08-13 | SDWA-1402241-00 | ND |
2019-08-13 | SDWA-1402240-00 | ND |
2019-11-06 | SDWA-1433599-00 | ND |
2019-11-06 | SDWA-1433604-00 | ND |
2019-11-06 | SDWA-1433603-00 | ND |
2019-11-06 | SDWA-1433602-00 | ND |
2019-11-06 | SDWA-1433601-00 | ND |
2019-11-06 | SDWA-1433600-00 | ND |