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)

New Year’s Day – Thu, Jan 1 2026

Presidents Day – Mon, Feb 16 2026

Good Friday – Fri, Apr 3 2026

Memorial Day – Mon, May 25 2026

Independence Day – Fri, Jul 3 2026

Labor Day – Mon, Sep 7, 2026

Indigenous Peoples Day/Columbus Day – Mon, Oct 12 2026

Veterans Day – Wed, Nov 11 2026

Thanksgiving Day – Thu, Nov 26 2026

Friday after Thanksgiving – Fri, Nov 27 2026

Christmas Eve – Thu, Dec 24 2026

Christmas Day – Fri, Dec 25 2026