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Springfield explains sewer trunk extensions outside city limits and how developers repay costs
Summary
Staff described a long-standing city policy of extending sewer trunk lines beyond city limits — including the Jasper and Natron extension phases — and explained how developer reimbursement districts and in-lieu collections offset the city’s upfront costs over time.
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Budget Committee members asked about sewer-line extensions to Jasper and Natron, which lie outside the city limits but within Springfield’s urban growth boundary.
Staff said the city began extending sewer trunk lines during a 2009 program of wet-weather abatement, using bond proceeds that resulted in lower-than-expected construction costs. Funds remaining from that program were used to extend sewer services beyond city limits, and the city has continued that approach in subsequent phases; the project is currently in phase 3, extending toward Brandis Road.
Committee members asked whether it is typical to extend services before annexation. Staff said council authorized the extensions and the city has historically used sewer fund reserves and bonding to build trunk lines that later allow developers or property owners to ‘‘buy in’’ as they develop. One mechanism used is a reimbursement district in which property owners pay back a developer over time; the reimbursement term commonly lasts 15 years, and the city can collect in‑lieu fees from later connections in perpetuity if properties connect later.
Staff said they did not have a specific payback projection on hand and would provide further detail if requested; they emphasized the city gains property tax base as undeveloped properties build out even while the city carries upfront construction costs.
No formal decisions were made. Staff said they could research payback timelines and provide those numbers to the committee.

