Professional Services for the Regional Wastewater Services Plan Update

The contract aims to engage professional services to support King County Wastewater Treatment Division in updating its regional sewer plan, known as the Regional Wastewater Services Plan (RWSP). Originally developed in the late 1990s, the updated plan, referred to as the RWSP Update or Regional Wastewater Services Plan Update, will incorporate contemporary engineering, strategic, planning, communications, and stakeholder engagement efforts to ensure the wastewater infrastructure aligns with current needs and future growth. The scope includes comprehensive planning activities, development of strategies, and coordination with regional stakeholders to create a modernized, effective wastewater management framework. The project is estimated to cost between five and fifteen million dollars and is scheduled for completion over approximately four years, with detailed phases outlined in the associated documents. The procurement process was initiated through a formal Request for Proposals (RFP) issued in October 2025, with a proposal deadline of October 29, 2025, and a pre-proposal conference held earlier that month. The RFP emphasizes the importance of a detailed project approach, including project management, community engagement, environmental compliance, and technical development. The contract will formalize the selected consultant's responsibilities, deliverables, and legal obligations, including provisions for insurance, non-discrimination, and termination clauses. The project involves multiple phases, with initial planning and engagement efforts currently underway, as reflected in the project approach chart. Overall, this contract represents a significant effort to modernize and enhance the regional wastewater infrastructure planning process, ensuring it meets current standards and future demands through strategic, technical, and community-focused initiatives.