WATER AND WASTEWATER RATES

On May 7, 2025, the Missouri Public Service Commission (MoPSC) issued an order approving the rate settlement reached by parties in Missouri American Water’s rate case for its water and wastewater operations.

The rate case was filed in July 2024 and included a request for recovery of nearly $1.1 billion in water and wastewater system improvements since its last filing. Investments in the rate review include the replacement or installation of aging water and wastewater pipes to help reduce main breaks and sewer overflows. Improvement projects also include the upgrading of treatment plants, storage tanks, wells, pumping and lift stations, fire hydrants, meters and more across the state.

New rates were approved on May 16, 2025 by the Missouri Public Service Commission and will be effective on May 28, 2025. Please refer to this link for more rate information. The rate tariff sheets will also be added when they become available.

Missouri American Water offers customers bill payment assistance programs including a payment installment plan and budget billing options available on the customer MyWater portal at missouriamwater.com. Income-eligible customers may also apply for assistance through the company’s Help to Others (H2O) Program. Information on additional customer assistance programs can be found on Missouri American Water Payment Assistance Options webpage.

Water and Sewer Infrastructure Rate Adjustment (WSIRA)

In 2021 the Missouri Legislature passed a bill to help accelerate the replacement of aging pipes, pumps, and other critical components of water and wastewater systems by allowing for more timely recovery of investments. Click Here For more information on Missouri American Water WSIRA.

Current Water/Wastewater Rates And Rules/Regulations Tariff

Missouri American Water Rules and Regulations (Water)
Missouri American Water Rules and Regulations (Wastewater)
Missouri American Water Schedule of Rates (Water)
Missouri American Water Schedule of Rates (Wastewater)