2,4,5-TP (Silvex)
South Toledo Bend Water District
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 | ND | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-04-07 | AD90491 | ND |
2014-04-07 | AD90491 | ND |
2014-08-25 | AD95804 | ND |
2014-08-25 | AD95804 | ND |
2015-03-02 | 35177846005 | ND |
2015-03-02 | 35177846005 | ND |
2015-10-05 | 35210878003 | ND |
2015-10-05 | 35210878003 | ND |
2016-04-11 | 35239164003 | ND |
2016-04-11 | 35239164003 | ND |
2016-11-21 | 35279123009 | ND |
2016-11-21 | 35279123009 | ND |
2017-04-04 | 35304846002 | ND |
2017-04-04 | 35304846002 | ND |
2017-10-16 | 35343117001 | ND |
2017-10-16 | 35343117001 | ND |
2018-02-20 | 35375985001 | ND |
2018-02-20 | 35375985001 | ND |
2018-08-06 | 35409595001 | ND |
2018-08-06 | 35409595001 | ND |
2019-03-12 | 35454722001 | ND |
2019-03-12 | 35454722001 | ND |
2019-08-07 | 35488968001 | ND |
2019-08-07 | 35488968001 | ND |