Healthy soil is essential for filtering water. The soil acts as a natural filter, trapping sediments and pollutants and allowing clean water to pass through. Plants also play an important role in filtering water, as their roots help to break down contaminants and improve the quality of the water.
Soil filters water by trapping sediments and pollutants while allowing clean water to pass through. The size, shape, and composition of the particles in the soil determine how effective it is at filtering water. For example, sand is a very effective filter because it has large pores that can trap sediment and other pollutants. However, sand can also let small particles of pollution through, so it’s not perfect.
Plants also help to filter water by breaking down contaminants with their roots and improving the quality of the water. Some plants even have special structures that help them remove specific pollutants from the water. For example, willow trees are often used to remove heavy metals from contaminated sites.