2,4,5-TP (Silvex)
Somerset Water Service
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 | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 2 | 0 | ND |
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 |
---|---|---|
2014-02-10 | 11823-01 | ND |
2014-05-12 | 15974-01 | ND |
2014-09-08 | 22561-01 | ND |
2014-12-09 | 26986-01 | ND |
2015-03-13 | 13476-01 | ND |
2015-06-08 | 17864-01 | ND |
2015-09-08 | 23270-01 | ND |
2015-12-08 | 28175-01 | ND |
2016-03-14 | 13788-01 | ND |
2016-06-13 | 18844-01 | ND |
2016-09-12 | 25331-01 | ND |
2016-12-12 | 30933-01 | ND |
2017-03-13 | 14596-01 | ND |
2017-09-13 | 27790-01 | ND |