Iowa's Clean Water State Revolving Fund (CWSRF) is the best choice to finance publicly owned wastewater treatment, sewer rehabilitation, replacement, and construction, and storm water quality improvements. Since 1989, the CWSRF has provided more than $1.4 billion in financing assistance for water pollution control.

Step by Step Process Overview

  • A project initiation meeting is required before the planning process begins.  Click here to obtain a work record request form.
  • After a facility plan is submitted, an IUP application must be submitted to request inclusion on the CWSRF IUP.
  • Applicants must follow the wastewater construction permitting process to be eligible to apply for the CWSRF.
  • Projects must be on an approved IUP to be eligible for funding. The IUP Application is not an application for a loan.
  • Once the project is listed on an approved IUP, it is eligible to apply for an SRF loan.
  • The IUP schedule is available here.
Intended Use Plan
The CWSRF Intended Use Plan (IUP) outlines the funding available and the planned uses, including project priority lists. The IUP is published quarterly with an opportunity for input by stakeholders and program users before approval by the Iowa Environmental Protection Commission.

Program Guidance
The wastewater construction manual is a step-by-step guide to the process of planning and permitting a wastewater project and includes instructions for participating in the CWSRF program.
Project Ranking
The CWSRF project scoring system criteria consider the use classification of the receiving waters, water quality of the receiving waters, groundwater protection, project type, project purpose and a tiebreaker. Every CWSRF project is scored and ranked. The CWSRF is currently able to fund all projects.
Program Resources
Intended Use Plan Information


The SRF provided the lowest rates available for the City of Shenandoah to finance improvements to the Waste Water Treatment Facility.

Marcia McKay, City Clerk/Treasurer

Program Contacts

Theresa Enright
Iowa DNR
State Revolving Fund Program Coordinator 515-725-0498


Water Quality Team
Iowa Finance Authority