CONVEYANCE PIPES - NEW AND UPSIZED

Investing in new and upsized sewers and storm drains can help reduce flooding and sewer overflows and protect water quality. Replacing older pipes with new pipe materials and construction methods that are more durable can improve system reliability. Replacing undersized sewers and storm drains with bigger pipes can help prevent flooding or sewer overflows. Some streets or neighborhoods in Seattle lack public sewers or storm drains. In areas without public sewers, property owners rely on private septic systems to treat wastewater. In areas without storm drains, the risk of flooding is often greater.