2,4,5-TP (Silvex)
Beauregard Water Works District #3
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 | 2 | 0 | ND |
2016 | ND | 20 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 22 | 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 |
---|---|---|
2015-03-02 | 35177665002 | ND |
2015-03-02 | 35177665002 | ND |
2016-01-19 | 35225812002 | ND |
2016-01-19 | 35225812001 | ND |
2016-01-19 | 35225812002 | ND |
2016-01-19 | 35225812005 | ND |
2016-01-19 | 35225812004 | ND |
2016-01-19 | 35225812003 | ND |
2016-01-19 | 35225812001 | ND |
2016-01-19 | 35225812005 | ND |
2016-01-19 | 35225812004 | ND |
2016-01-19 | 35225812003 | ND |
2016-02-01 | 35227539001 | ND |
2016-02-01 | 35227539002 | ND |
2016-02-01 | 35227539003 | ND |
2016-02-01 | 35227539004 | ND |
2016-02-01 | 35227539004 | ND |
2016-02-01 | 35227539003 | ND |
2016-02-01 | 35227539002 | ND |
2016-02-01 | 35227539001 | ND |
2016-09-19 | 35266620009 | ND |
2016-09-19 | 35266620009 | ND |
2018-02-27 | 35377534001 | ND |
2018-02-27 | 35377534001 | ND |
2018-03-19 | 35381349005 | ND |
2018-03-19 | 35381349004 | ND |
2018-03-19 | 35381349005 | ND |
2018-03-19 | 35381349004 | ND |
2018-03-19 | 35381349003 | ND |
2018-03-19 | 35381349002 | ND |
2018-03-19 | 35381349001 | ND |
2018-03-19 | 35381349001 | ND |
2018-03-19 | 35381349002 | ND |
2018-03-19 | 35381349003 | ND |
2018-04-16 | 35387317001 | ND |
2018-04-16 | 35387317005 | ND |
2018-04-16 | 35387317004 | ND |
2018-04-16 | 35387317003 | ND |
2018-04-16 | 35387317002 | ND |
2018-04-16 | 35387317001 | ND |
2018-04-16 | 35387317005 | ND |
2018-04-16 | 35387317004 | ND |
2018-04-16 | 35387317003 | ND |
2018-04-16 | 35387317002 | ND |