Silvex (2,4,5-TP / Fenoprop)

EPA Maximum Contaminant Level (MCL)

0.05 mg/L

Silvex (also known as 2,4,5-TP or Fenoprop) is an organic chemical formerly used as an herbicide to control woody plants and broad-leafed weeds. It was used on rice, turf, sugarcane and lawns until it was banned in 1985.

Silvex arrives in water primarily through residue from its banned herbicidal use.

Health Effects of Silvex

Although it has not been linked to cancer, silvex can lead to liver problems. According to the EPA:

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Some people who drink water containing 2,4,5-TP well in excess of the maximum contaminant level [0.05 milligrams per Liter] for many years could experience liver problems.

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Water Treatment for Silvex

The EPA recommends granular activated carbon (GAC) for the treatment of Silvex.