2,4,5-TP (Silvex)
Midland-lonaconing
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 | 2 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 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 |
---|---|---|
2014-05-05 | 0010018_02_00489 | ND |
2014-05-05 | 0010018_03_00489 | ND |
2015-05-11 | E15003488001 | ND |
2015-05-11 | E15003488004 | ND |
2015-05-11 | E15003488006 | ND |
2016-04-26 | E16004054001 | ND |
2016-04-26 | E16004054003 | ND |
2016-04-26 | E16004054005 | ND |
2017-04-26 | E17004256001 | ND |
2017-04-26 | E17004256005 | ND |
2017-04-26 | E17004256007 | ND |
2018-04-25 | E18003853005 | ND |
2018-04-25 | E18003853003 | ND |
2018-04-25 | E18003855001 | ND |