Contact

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
815-387-7400
Sewer Backup Number
(24 hours per day)
815-387-7600
Sewer Toxic Spill Number
(24 hours per day)
815-387-7455
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)
Our offices are closed on the following 2023 holidays:
New Year’s Day – Mon, Jan 2
President’s Day – Mon, Feb 20
Good Friday – Fri, Apr 7
Memorial Day – Mon, May 29
Independence Day – Tue, Jul 4
Labor Day – Mon, Sep 4
Columbus Day – Mon, Oct 9
Veteran’s Day – Friday, Nov 10
Thanksgiving – Thu, Nov 23
Friday After Thanksgiving – Fri, Nov 24
Christmas Eve – Fri, Dec 22
Christmas Day – Mon, Dec 25
General Contact
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