2,4,5-TP (Silvex)
Eastern Bartholomew Water
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 | ND | 8 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 4 | 0 | ND |
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 |
---|---|---|
2015-02-17 | 15011768001RS28- | ND |
2015-02-17 | 15021555001RS28- | ND |
2015-04-13 | 15041407001RS28- | ND |
2015-04-13 | 15041409001RS28- | ND |
2015-08-18 | 15082249RS28-150 | ND |
2015-08-18 | 15082251RS28-150 | ND |
2015-11-10 | 15111137001RS28- | ND |
2015-11-10 | 15111152001RS28- | ND |
2018-06-19 | 18062293RS28-180 | ND |
2018-06-19 | 18062294RS28-180 | ND |
2018-09-25 | 18092872RS28-180 | ND |
2018-09-25 | 18092874RS28-180 | ND |