Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Rancho Brazos Subdivision

NOTE: Rancho Brazos Subdivision purchases water from Acton MUD which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by 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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND180ND
2021ND10ND
2022ND10ND
2023ND140ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Rancho Brazos Subdivision purchases water from Acton MUD which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by Acton MUD.

Date Lab ID Result
2018-03-28Q1812936038ND
2019-03-26Q1912275002ND
2020-03-04Q2008205053ND
2020-03-04Q2008205054ND
2020-03-04Q2008205055ND
2020-03-04Q2008205056ND
2020-03-04Q2008205057ND
2020-03-04Q2008205058ND
2020-03-04Q2008205059ND
2020-03-04Q2008205060ND
2020-03-25Q2012703011ND
2020-03-25Q2012703012ND
2020-03-25Q2012703013ND
2020-03-25Q2012703037ND
2020-03-25Q2012703038ND
2020-03-25Q2012703039ND
2020-03-25Q2012703040ND
2020-07-29Q2029640017ND
2020-07-29Q2029640016ND
2020-09-17Q2037199006ND
2021-04-01Q2108342011ND
2022-01-27Q2202897006ND
2023-07-26Q2329862007ND
2023-10-18Q2344522048ND
2023-10-18Q2344522062ND
2023-10-18Q2344522050ND
2023-10-18Q2344522049ND
2023-10-18Q2344522030ND
2023-10-18Q2344522009ND
2023-10-18Q2344522008ND
2023-10-18Q2344522001ND
2023-11-14Q2348718014ND
2023-11-14Q2348718015ND
2023-11-14Q2348718016ND
2023-11-14Q2348718017ND
2023-11-14Q2348718027ND