2,4,5-TP (Silvex)
Acton MUD
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 | ND | 17 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 18 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-04-16 | Q1412086033 | ND |
2014-04-16 | Q1412086018 | ND |
2014-04-16 | Q1412086019 | ND |
2014-04-16 | Q1412086020 | ND |
2014-04-16 | Q1412086021 | ND |
2014-04-16 | Q1412086022 | ND |
2014-04-16 | Q1412086023 | ND |
2014-04-16 | Q1412086024 | ND |
2014-04-16 | Q1412086031 | ND |
2014-04-16 | Q1412086032 | ND |
2014-04-17 | Q1412419024 | ND |
2014-04-17 | Q1412419023 | ND |
2014-04-17 | Q1412419022 | ND |
2014-04-17 | Q1412419021 | ND |
2014-04-17 | Q1412419020 | ND |
2014-04-17 | Q1412419019 | ND |
2014-04-17 | Q1412419018 | ND |
2015-02-09 | Q1504919052 | ND |
2016-03-16 | Q1610933012 | ND |
2016-05-31 | Q1621309012 | ND |
2016-07-28 | Q1630951010 | ND |
2016-11-30 | Q1652001006 | ND |
2017-08-31 | Q1740574056 | ND |
2017-08-31 | Q1740574021 | ND |
2017-08-31 | Q1740574020 | ND |
2017-08-31 | Q1740574055 | ND |
2017-08-31 | Q1740574019 | ND |
2017-08-31 | Q1740574054 | ND |
2017-08-31 | Q1740574018 | ND |
2017-08-31 | Q1740574053 | ND |
2017-10-05 | Q1749124057 | ND |
2017-10-05 | Q1749124007 | ND |
2017-10-05 | Q1749124008 | ND |
2017-10-05 | Q1749124039 | ND |
2017-10-05 | Q1749124040 | ND |
2017-10-05 | Q1749124009 | ND |
2017-10-05 | Q1749124041 | ND |
2017-10-18 | Q1753761019 | ND |
2017-10-18 | Q1753761005 | ND |
2017-10-18 | Q1753761018 | ND |
2018-03-28 | Q1812936038 | ND |
2019-03-26 | Q1912275002 | ND |