Louisville weighs tap-fee update as firm water supply covers 84% of buildout demand

Louisville staff are considering an initial tap-fee update and a later cost-of-service and rate-design study as planning figures show firm supply covering about 84% of full-buildout demand. Preliminary recommendations are scheduled for October, with possible council adoption in March 2027.

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Aerial view of a municipal water-treatment plant with tanks, basins and connecting infrastructure.
Aerial view of a municipal water-treatment plant with tanks, basins and connecting infrastructure.
Photo by Giant Asparagus on Pexels

Louisville officials are considering an update to water tap fees while reserving a broader overhaul of water rates for a later study, after city planning figures showed firm supply would cover about 84% of demand under full buildout.

The city estimates new water now costs about $90,000 to $100,000 per acre-foot, up from roughly $10,000 in 2010. Annual water-system capital needs are estimated at $5 million to $25 million. Those are planning-level figures, not bids or final rate calculations, according to the city’s July 16 water-rate presentation.

The 84% figure indicates that current firm supply would not meet the amount needed for all development assumed in the city’s buildout scenario. The presentation did not identify specific homes or projects that would be denied or delayed.

What staff are considering

Staff identified a tap-fee update as the near-term step under consideration. A separate cost-of-service study and full rate-design effort could examine approaches such as water budgets. Staff also discussed payment plans or financing for tap fees, while noting that installments could create collection, lien and enforcement work and delay the city’s receipt of money needed for infrastructure.

The materials do not include a proposed tap-fee amount, a specific customer-rate increase or an adopted fee schedule. Staff are instead evaluating whether a rate-setting methodology largely unchanged since 2013 still fits current system needs, finances and policy direction, the Finance Committee staff report says. The July 16 discussion was informational and included no vote, formal action or development proposal.

The presentation said inflation-adjusted water rates were essentially flat from 2009 through 2025 even as nominal rates rose. It described a full rate redesign as a separate future effort, not part of the initial tap-fee work.

When a proposal could reach council

Staff’s schedule calls for preliminary rate-structure and rate-setting recommendations to return to the Finance Committee in October. It lists a final presentation in February 2027, City Council consideration and adoption in March 2027, and a May 1, 2027, effective date for any rates the council adopts. Those are prospective milestones as of July 18, not completed actions.

The committee’s work plan also lists a Sept. 17 discussion of a revised 2027 utility-rate presentation “if necessary,” followed by an Oct. 15 update on the utility-rate structure and setting process, the work plan shows. The schedule could change as staff complete the review.

No formal water-rate or tap-fee proposal is before the council. The next defined step is staff analysis of the rate model and a preliminary recommendation to the Finance Committee, as the city plans for a buildout supply gap and higher water and infrastructure costs.