2,4,5-TP (Silvex)

Bluewell Psd

NOTE: Bluewell Psd purchases water from Green Valley Glenwood Psd Glenwood which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by Green Valley Glenwood Psd Glenwood.

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	N/A	0	N/A
2015	N/A	0	N/A
2016	ND	1	ND
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	ND	2	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
2016-01-13	1601B47-03A	ND
2016-05-03	16050344-01A	ND
2019-01-17	441341	ND
2019-04-04	448405	ND