Sioux City appoints Piper Sandler for $500m wastewater plant financing
Sioux City Field Services, Iowa · Meeting date: October 26, 2026 · Published: October 27, 2026
Sioux City Council has approved a dedicated financial-services agreement with Piper Sandler for the staged renovation of its wastewater treatment plant. The advisory mandate covers an approximately $500 million programme expected to be built over roughly a decade and financed through multiple debt issues.
Key points
- Piper Sandler will advise on financing for an approximately $500 million wastewater-treatment-facility renovation, to be constructed in stages over about 10 years.
- The firm will remain engaged until project funding is complete, avoiding a change of adviser during the programme when Sioux City next tenders its general financial-advisory services.
- The mandate includes sewer-utility revenue and expense modelling, debt-capacity analysis, and a model to help determine the timing and scale of sewer-rate increases.
- Fees include $9,500 for the utility model, plus 0.1% of State Revolving Fund issuance proceeds and 0.2% of public-debt or WIFIA issuance proceeds, subject to specified minimums and caps.
Full report
Sioux City Council has appointed Piper Sandler & Co. as municipal adviser for financing the renovation of the city’s wastewater treatment plant, creating a project-specific mandate for a programme estimated at approximately $500 million.
The agreement anticipates construction in stages over roughly a decade, with multiple debt series expected to finance each stage. It will remain in force until funding for the project is complete.
The dedicated contract separates the wastewater plant from Piper Sandler’s wider financial-advisory agreement with the city. Council also extended that general agreement through the fiscal year ending June 30, 2028, but removed wastewater and sewer projects from its scope. Staff said the separate arrangement would prevent a potential change in financial adviser midway through the treatment-plant programme when the city issues a future request for qualifications for general advisory services.
Piper Sandler’s work will include modelling sewer-utility income, expenses and future debt; testing whether prescribed rates, including increases where necessary, can meet coverage requirements; and preparing an Excel-based model for the city to assess the timing and amount of sewer-rate increases. The adviser may also develop a plan of finance, support State Revolving Fund financing, participate in calls with the federal Water Infrastructure Finance and Innovation Act programme if that funding source is considered, and coordinate credit-rating work for public debt or WIFIA borrowing.
For SRF debt, Piper Sandler will receive 0.1% of gross issuance proceeds, with a minimum fee of $7,500 and a maximum of $18,000 per issuance. For public debt or WIFIA debt, the fee is 0.2% of gross proceeds, subject to a $30,000 minimum. A $3,000 fee applies if the city requests a parity certificate. Minimum and maximum fees will increase 3% annually beginning in the calendar year after the agreement date.
The council approved the agreement as part of its consent agenda. The new mandate establishes the financing framework for the wastewater-treatment-plant renovation but does not itself approve construction funding or a debt issuance.
This summary was generated by AI based on the source document and may contain errors.
Source: City Council, Sioux City Field Services