Rock Falls water and sewer rates
At typical use (9 units, about 6,700 gallons a month), a Rock Falls house pays about $56 a month for water and about $98 for sewer: about $1,850 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Rock Falls houses, what it costs, and how the sewer charge works.
City of Rock Falls Water Department
Standard water rates effective May 1, 2025: debt service charge $4.85, customer service charge for capital improvements $3.50, basic user charge $13.45 and basic user rate $5.70.
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $21.80 a month |
| 0 to 3 units | $0.00 |
| 3 to more | $5.70 |
Sewer
Standard rate for city-metered water: basic user charge $21.46 and replacement wastewater treatment plant charge $25.50 for the first three units, capital improvement $6.00, then $6.70 plus $0.85 per unit (rates effective May 1, 2025).
Sources
Checked October 31, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.
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