Small Diameter Effluent Systems
Channel: PublicResourceOrg
Date: 2010-10-20

Small Diameter Effluent Systems - National Small Flows Clearinghouse   - Product WWVTPE04 - A small diameter effluent sewer (SDES) collects effluent from septic tanks at each service connection and transports it by gravity to a treatment plant or a conventional sewer. Synonyms include small diameter gravity sewers, septic tank effluent drains, and small bore sewers. The volume of septic tanks is often 1,000 gallons, but varies widely.