Audit finds Salt Lake City can't cover water project debt, property tax recommended

Overview

Updated 54 minutes ago

Salt Lake City borrowed more than $850 million for a new sewage treatment plant. A state audit released September 16 found the city cannot cover the debt payments from current revenue, and the Utah Legislative Auditor General's office is recommending a new property tax to close the gap.

The problem is structural. Federal funds once paid 50% to 60% of Utah water project costs. That share has fallen to about 3%, leaving Salt Lake City Public Utilities with over $60 million in annual debt service on infrastructure bonds. The city has already proposed a 12.5% property tax increase for its general fund; the audit suggests property owners may need to pay more for the water project on top of that.

Why it matters

Salt Lake City property owners could face higher taxes and utility bills if the city can't find another way to pay its water plant debt.

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Key Indicators

$850M+

Sewage treatment plant project cost

The city borrowed over $850 million for the new plant, according to the state audit.

$60M

Annual debt service on utility bonds

Salt Lake City Public Utilities faces over $60 million in debt service this year to remain in good standing on infrastructure bonds.

Federal share of Utah water project costs

Federal funds historically covered 50-60% of project costs in Utah for decades; that dropped to about 3%.

12.5%

Proposed property tax increase

Mayor Erin Mendenhall proposed a 12.5% property tax hike for FY2027, about $9.87 per month for a $624,000 home.

Voices

Curated perspectives — historical figures and your fellow readers.

Ever wondered what historical figures would say about today's headlines?

People Involved

Erin Mendenhall

Mayor of Salt Lake City

Proposing 12.5% property tax increase for FY2027 budget

Laura Briefer

Director of Salt Lake City Public Utilities

Managing $60M+ annual debt service on infrastructure bonds

Organizations Involved

Salt Lake City Department of Public Utilities

City Department

Facing $60M+ annual debt service

The city department managing Salt Lake City's water, sewer, and stormwater systems.

Utah Legislative Auditor General's Office

State Audit Agency

Released audit finding city can't cover water project debt

The independent state agency that audits Utah state and local government operations.

Salt Lake City Council

Municipal Legislature

Will decide on tax and rate increases

The elected body that must approve any property tax increase or utility rate changes.

Timeline

March 2026 September 2026

3 events Latest: Today

September 2026
State audit finds SLC can't cover water project debt
Today Audit

Utah Legislative Auditor General's office releases audit finding Salt Lake City cannot cover debt on its $850M-plus sewage treatment plant. Recommends new property tax or other revenue sources.
Today
May 2026
First public hearing on property tax hike
Public Meeting

Salt Lake City Council holds first hearing on Mayor Mendenhall's 12.5% property tax increase and utility fee hikes for FY2027.
May 19th, 2026
March 2026
State property tax cap bills defeated
Legislation

Utah legislators proposed bills to cap municipal property tax increases; the Utah League of Cities and Towns rallied to defeat them.
March 1st, 2026

Scenarios

Salt Lake City Council approves new property tax for water debt

Likely Resolves by Q2 2027

Discussed by: Utah Legislative Auditor General's recommendation; Salt Lake Tribune analysis

The city council accepts the audit's recommendation and approves a new property tax dedicated to covering the water project debt. This would likely come in the next budget cycle, possibly layered on top of the already-proposed 12.5% general fund increase. The combined burden on homeowners could exceed $20 per month in new taxes plus concurrent utility rate increases.

Utah legislature creates statewide water infrastructure funding mechanism

Possible Resolves by Mar 15, 2027

Discussed by: State legislative debate; Utah League of Cities and Towns advocacy

Facing similar fiscal strain in multiple municipalities, the Utah legislature creates a new statewide funding authority or expands the State Revolving Fund to back water infrastructure debt. This would relieve local governments' debt burden but requires legislative action in the 2027 session and would likely face opposition from groups seeking to limit government spending.

City raises utility rates further, avoids property tax for water debt

Possible Resolves by Jul 1, 2027

Discussed by: Laura Briefer's public statements on rate necessity; ratepayer advocacy groups

Rather than pursue a new property tax, the city absorbs the water project debt through utility rate increases. Salt Lake City Public Utilities already plans rate hikes totaling $32.35 per month per household for combined utility services. The audit suggests this won't be enough; further rate increases could push the total monthly burden toward $50 per household and risk triggering affordability complaints or state intervention.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

1972-1987

Clean Water Act funding shift (1972-1987)

The 1972 Clean Water Act created a federal grant program that paid up to 75% of municipal wastewater treatment plant construction costs. By 1987, Congress began phasing out these grants in favor of low-interest loans through State Revolving Funds. Cities that had relied on federal money suddenly had to borrow or raise local revenue for the next generation of infrastructure.

Then

Cities raced to build treatment plants while federal grants were still available, creating a construction boom in the 1970s-80s.

Now

Over subsequent decades, the federal share of water infrastructure costs shrank from over half to single digits. Utah's drop from 50-60% to 3% follows this national pattern.

Why this matters now

This is the structural origin of Salt Lake City's current problem: the city was built to expect federal cost-sharing that no longer exists, and the $850M sewage plant was designed under that assumption.

1996-2000

Washington, D.C. Water and Sewer Authority (1996)

Congress created the D.C. Water and Sewer Authority to replace a federal agency that had let the city's water infrastructure decay for decades. The new authority had the power to set its own rates. It immediately raised water and sewer fees sharply to fund repairs, and rates have climbed steadily since.

Then

D.C. water bills rose dramatically, hitting low-income residents hardest within the first few years of rate increases.

Now

The authority became financially self-sustaining through rate revenue, but affordability remains an unresolved issue for the city's poorest households.

Why this matters now

Shows that the standard resolution for water infrastructure debt is passing the cost to ratepayers. Salt Lake City is at the beginning of this path.