Your Water and Wastewater Rates

Water-service rates are based on the real costs of treating and delivering water to customers, and are regulated by state public utilities commissions (PUCs). In Iowa, our state regulatory agency is the Iowa Utilities Board (IUB) in Des Moines, IA.

To change its rates, Iowa American Water files an application with the IUB supported by studies and testimony demonstrating its cost of providing service, including the cost of construction, maintenance, operation, administration, taxes, and financing. The Company's submission is subject to rigorous review by the IUB staff and the Iowa Office of Attorney General, Division of Consumer Counsel, who then file their own testimony and analyses. After considering all of the evidence, the IUB sets the Company's rates.

Rates charged for service may vary based on a customer’s meter size. All customers pay the same rate for water usage. Customers are billed based on a regular meter reading, either monthly or quarterly for residential customers as well as for commercial and other public authority customers.

Rates can vary based on the cost of providing service in each of the communities we serve. Before it reaches your home or business, water is treated through an intricate treating and testing process to help ensure it meets or surpasses rigorous drinking water quality standards.

You can learn more about the rate setting process in our white paper: Challenges In The Water Industry: The Rate Approval Process.

Customers can contact our Customer Service Center at 1-866-641-2108 or submit questions via email to More information can also be found on the Iowa Utilities Board website at
Iowa Water Tariff
Iowa Sewer Tariff

May 1, 2024: Iowa American Water Files Rate Request Driven by Over $157 Million in Investment

On May 1, 2024, Iowa American Water filed a rate request with the Iowa Utilities Board (IUB) reflecting more than $157 million in water and wastewater system improvements from October 2021 through March 2026 to continue providing clean, safe, reliable and affordable service. The request reinforces the company’s commitment to investing in its water and wastewater systems to replace aging infrastructure, meet water quality and environmental regulations, provide resiliency of operations, increase fire protection and meet customers’ other water and wastewater service needs. Read more from the news release.

Notice of Water Rates Increase
Notice of Sewer Rates Increase
Customer Explanation Letter