2,4,5-TP (Silvex)
Murray City Water System
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 | 3 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 31 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 33 | 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 | Result |
---|---|
2014-02-07 | ND |
2014-06-27 | ND |
2014-09-29 | ND |
2016-04-20 | ND |
2016-05-09 | ND |
2016-06-06 | ND |
2016-06-06 | ND |
2016-06-08 | ND |
2016-06-08 | ND |
2016-06-09 | ND |
2016-06-09 | ND |
2016-06-13 | ND |
2016-06-14 | ND |
2016-06-15 | ND |
2016-06-17 | ND |
2016-07-14 | ND |
2016-07-14 | ND |
2016-07-14 | ND |
2016-08-17 | ND |
2016-08-17 | ND |
2016-08-17 | ND |
2016-08-19 | ND |
2016-08-19 | ND |
2016-08-19 | ND |
2016-08-23 | ND |
2016-08-23 | ND |
2016-08-23 | ND |
2016-08-24 | ND |
2016-08-24 | ND |
2016-08-24 | ND |
2016-09-29 | ND |
2016-09-29 | ND |
2016-09-29 | ND |
2016-11-29 | ND |
2017-02-08 | ND |
2017-04-28 | ND |
2019-03-08 | ND |
2019-03-08 | ND |
2019-05-13 | ND |
2019-05-13 | ND |
2019-05-22 | ND |
2019-05-30 | ND |
2019-05-30 | ND |
2019-06-05 | ND |
2019-06-05 | ND |
2019-06-12 | ND |
2019-06-12 | ND |
2019-06-13 | ND |
2019-06-13 | ND |
2019-06-19 | ND |
2019-06-19 | ND |
2019-06-21 | ND |
2019-06-21 | ND |
2019-07-23 | ND |
2019-07-23 | ND |
2019-07-26 | ND |
2019-07-26 | ND |
2019-07-26 | ND |
2019-07-29 | ND |
2019-07-29 | ND |
2019-07-29 | ND |
2019-09-16 | ND |
2019-09-16 | ND |
2019-09-16 | ND |
2019-09-16 | ND |
2019-09-18 | ND |
2019-09-18 | ND |
2019-09-20 | ND |
2019-11-06 | ND |