2,4,5-TP (Silvex)
Byron
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.
13
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 | ND | 2 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 1 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-01-14 | 1401536-001A | ND |
2014-06-11 | 1406697-001A | ND |
2015-01-13 | 1501547-001C | ND |
2015-01-13 | 1501547-004C | ND |
2015-06-16 | 1506D79-001C | ND |
2015-06-16 | 1506D79-004C | ND |
2017-02-08 | 34692001 | ND |
2018-02-13 | 38202501 | ND |
2018-02-13 | 38202701 | ND |
2018-04-23 | 38901501 | ND |
2018-04-24 | 38901601 | ND |
2018-08-06 | 18H0264-01_02 | ND |
2019-05-29 | 44353901 | ND |