2,4,5-TP (Silvex)
Lakehaven Utility 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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 13 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 3 | 0 | ND |
2019 | ND | 7 | 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 |
---|---|---|
2014-05-13 | 97552 | ND |
2014-05-13 | 97552 | ND |
2014-05-13 | 97551 | ND |
2014-05-13 | 97550 | ND |
2014-05-13 | 97550 | ND |
2014-05-13 | 97550 | ND |
2014-06-03 | 98432 | ND |
2014-06-03 | 98432 | ND |
2014-07-22 | 00835 | ND |
2014-07-22 | 00834 | ND |
2014-08-05 | 50008 | ND |
2014-08-05 | 50007 | ND |
2014-08-05 | 50006 | ND |
2018-06-19 | ND | |
2018-08-08 | ND | |
2018-08-29 | ND | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-12 | ND | |
2019-06-12 | ND | |
2019-07-31 | ND | |
2019-08-06 | ND | |
2019-09-04 | ND |