Liners play a key role in preventing seepage and contamination in stormwater capture systems by creating a durable, impermeable barrier that keeps stored water contained. In ponds or tanks, liners prevent stormwater from seeping into the surrounding soil, which is especially important in areas with permeable or porous ground. This containment helps ensure that the water remains available for use, whether for irrigation or other non-potable applications.
Liners made from materials like reinforced polyethylene (RPE) are designed to resist damage from UV exposure, chemicals, and environmental stress, maintaining their integrity over time. Their smooth surface also reduces the potential for algae, bacteria, or other contaminants to grow, helping maintain the water quality. By sealing off the storage area, liners effectively prevent the infiltration of soil, debris, or pollutants that could compromise the harvested water.