Are the Herbicides That We Use in Aquatic Systems Considered PFAS?

Abstract

In the environmental science community, there has been increasing concern and emphasis on a relatively new designation of molecules called per- and polyfluoroalkyl substances, also known as PFAS. These compounds are colloquially referred to as “forever chemicals” due to their potential persistence in the environment. Recent concerns have arisen regarding aquatic herbicides and whether they are classified as PFAS. The purpose of this publication is to provide information on aquatic herbicides and their classification as PFAS, enabling all stakeholders involved with aquatic environments to gain a deeper understanding of the herbicides used in their water bodies. Written by Eli C. Russell and Joseph H. Bisesi, and published by the UF/IFAS Department of Agronomy, September 2026.