Press Release

FOR IMMEDIATE RELEASE -- September 09, 2021
Kevin Kelly (573) 751-9300

PSC Sets Intervention Deadline in
Missouri-American Water Company WSIRA Cases

JEFFERSON CITY---Missouri-American Water Company (MAWC) has filed an application with the Missouri Public Service Commission seeking to establish a Water and Sewer Infrastructure Rate Adjustment (WSIRA) on customer bills.

According to MAWC, for water customers using 5,000 gallons of water per month, St. Louis County customers would see a monthly surcharge of $2.38. For water customers outside of St. Louis County, the monthly surcharge would be $1.08. For sewer customers, a typical residential customer in Arnold would see no WSIRA surcharge. A typical residential MAWC sewer customer outside of Arnold would see a surcharge of $0.56 a month.

Applications to intervene and participate in these cases must be filed no later than
September 29, 2021, with the Secretary of the Missouri Public Service Commission, P.O. Box 360, Jefferson City, Missouri 65102-0360, or by using the Commission’s Electronic Filing and Information System (EFIS) at

Individual citizens wishing to comment should contact either the Office of the Public Counsel (Governor Office Building, 200 Madison Street, Suite 650, P.O. Box 2230, Jefferson City, Missouri 65102-2230, telephone (866) 922-2959, email
) or the Public Service Commission Staff (P.O. Box 360, Jefferson City, Missouri 65102, telephone 1-800-392-4211, email The Office of the Public Counsel is a separate state agency that represents the general public in matters before the Commission.

MAWC provides water service to approximately 471,000 customers in Missouri. It also provides sewer service to approximately 15,000 customers in the state.
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