Wastewater Facilities Master Plan 2024

The City of Sisters, Oregon, owns and operates a conventional gravity wastewater collection system integrated with four existing lift stations, a mechanical screening facility, and three wastewater lagoons to process and store municipal wastewater at the wastewater treatment facility.

Improvements to the City’s existing wastewater infrastructure are outlined and proposed. Aging infrastructure and substantial population growth require improvements to the City’s existing collection system, wastewater treatment facility, and wastewater disposal system. Information regarding the identified needs and deficiencies are outlined in this report.