What is one of the main benefits of having a grass filter as a buffer?

Having a grass filter as a buffer primarily serves to trap sediments and nutrients before they reach water bodies. Grass filters have dense root systems that stabilize the soil and create a physical barrier against the movement of pollutants such as nitrogen, phosphorus, and sediments carried by rainwater and runoff. This natural filtration process helps to improve water quality by reducing the amount of harmful substances that can enter streams, rivers, lakes, and other water sources, thus protecting aquatic ecosystems and promoting overall environmental health. The ability of grass filters to absorb and utilize these nutrients also benefits soil health, supporting plant growth in surrounding areas.