Oak Brook water and sewer rates
At typical use (5.4 units, about 4,000 gallons a month), a Oak Brook house pays about $67 a month for water and about $31 for sewer: about $1,170 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Oak Brook houses, what it costs, and how the sewer charge works.
Pay or manage it
Village of Oak Brook
Residential rate for 2026: $14.22 per 1,000 gallons; fixed monthly charge $10.00. Billed bimonthly.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $10.00 a month |
| 0 to more | $14.22 |
Sewer
Flagg Creek provides sanitary sewer service for parts of Oak Brook; it bills metered residential accounts per 1,000 gallons plus a bi-monthly availability fee.
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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