2,4,5-TP (Silvex)
Far West Water & Sewer Inc
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 | 10 | 0 | ND |
2016 | ND | 10 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2015-05-18 | 550-45037-1 | ND |
2015-05-18 | 550-45036-1 | ND |
2015-05-18 | 550-45035-1 | ND |
2015-05-25 | 550-45319-1 | ND |
2015-05-25 | 550-45318-1 | ND |
2015-11-16 | 550-54480-1 | ND |
2015-11-16 | 550-54479-1 | ND |
2015-11-30 | 550-55075-1S | ND |
2015-11-30 | 550-55074-1S | ND |
2015-12-06 | 550-55507-1 | ND |
2016-01-18 | 550-57438-1 | ND |
2016-01-18 | 550-57423-1 | ND |
2016-01-25 | 550-57775-1T | ND |
2016-01-25 | 550-57774-1T | ND |
2016-02-22 | 550-59253-1T | ND |
2016-08-08 | 550-67724-1 | ND |
2016-08-08 | 550-67722-1 | ND |
2016-08-29 | 550-68785-1 | ND |
2016-08-29 | 550-68784-1S | ND |
2016-09-05 | 550-69042-1 | ND |