Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Calif State Polytechnical Univ - Pomona

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021N/A00N/A
2022ND10ND
2023ND30ND

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

Date Lab ID Result
2018-12-04CA1910022_005_005-201812041250ND
2019-12-17CA1910022_005_005-201912171100ND
2020-03-10CA1910022_005_005-202003101035ND
2020-06-09CA1910022_005_005-202006091000ND
2020-12-08CA1910022_005_005-202012081210ND
2022-06-07CA1910022_005_005-202206071035ND
2023-03-07CA1910022_005_005-202303071225ND
2023-06-20CA1910022_005_005-202306201100ND
2023-09-26CA1910022_005_005-202309261135ND