Stormwater systems often use many different kinds of filters to remove containments and improve water quality before the water is stored or reused. The type of filter depends on the level of treatment required and the intended use of the water. Common filters include mesh screens or leaf guards, which are used at the initial collection point to block large debris like leaves and twigs. Sediment traps or settling basins allow heavier particles to settle out of the water before it moves on to finer filtration stages.
More advanced filtration may be done via sand filters, gravel filters, or cartridge filters that capture smaller particles and suspended solids. In some cases, biofiltration systems use vegetation and soil to treat stormwater naturally, helping to remove nutrients and organic matter. For applications where higher water quality is needed, such as industrial reuse or groundwater recharge, advanced filters like activated carbon or membrane filters may be used to remove finer pollutants, odors, or chemicals.
