Oconomowoc water and sewer rates
At typical use (9 units, about 6,700 gallons a month), a Oconomowoc house pays about $64 a month for water and about $59 for sewer: about $1,470 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Oconomowoc houses, what it costs, and how the sewer charge works.
Oconomowoc Utilities (City water utility)
Volume charges are per 1,000 gallons used each month, in three tiers.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $23.83 a month |
| 0 to 70 thousand gallons | $5.93 |
| 70 to 255 thousand gallons | $4.78 |
| 255 to more | $3.96 |
- Source
- Five of the seven wells are drilled into the sandstone aquifer and two into the shallow sand and gravel formation.
- Hardness
- Total hardness averaged 375 mg/l (range 320 to 420).
Sewer
2026 rates: monthly service charge plus Class A volume charge per 1,000 gallons.
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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