We’re looking forward to hearing from you! Use the form or phone numbers below to get in touch with a Four Rivers team member.

If you need to contact FRSA about lab analysis services, visit our Lab Services page.

If you need to contact a specific department within FRSA, visit our Departments page.

Graceffa Administration Building
3501 Kishwaukee Street
Rockford, IL 61109

Wastewater Treatment Plant
3333 Kishwaukee Street
Rockford, IL 61109

Main Phone Number

Sewer Backup Number
(24 hours per day)

Sewer Toxic Spill Number
(24 hours per day)

Business Hours
Monday – Friday
8:00 A.M. – 4:30 P.M. (Except Holidays)

Drive-Up Payment Window
Monday – Friday
8:30 A.M. – 4:30 P.M. (Except Holidays)


Memorial Day: Monday, May 30, 2022

Independence Day: Monday, July 4, 2022

Labor Day: Monday, September 5, 2022

Columbus Day: Monday, October 10, 2022

Veteran’s Day: Friday November 11, 2022

Thanksgiving Holiday: Thursday November 24, 2022

Friday After Thanksgiving: Friday November 25, 2022

Christmas Eve: Friday, December 23, 2022

Christmas Day: Monday, December 26, 2022

New Year’s Day: Friday, December 30, 2022

President’s Day: Monday, February 20, 2023

Good Friday: Friday, April 7, 2023

General Contact

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