2,4,5-TP (Silvex)
Alamogordo Domestic 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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 10 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 5 | 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 |
---|---|---|
2014-02-18 | 1402852-002A | ND |
2014-02-18 | 1402856-002A | ND |
2014-02-18 | 1402855-002A | ND |
2014-02-18 | 1402844-005A | ND |
2014-02-18 | 1402848-005A | ND |
2014-04-08 | 1404485-001A | ND |
2014-04-08 | 1404487-001A | ND |
2014-04-08 | 1404484-001A | ND |
2014-04-08 | 1404488-001A | ND |
2014-04-08 | 1404489-001A | ND |
2017-02-14 | 1702738-005 | ND |
2017-02-14 | 1702739-005 | ND |
2017-04-19 | 1704A01-005 | ND |
2017-04-19 | 1704A04-005 | ND |
2017-04-19 | 1704A02-005 | ND |