Wilsonville water and sewer rates
At typical use (9 units, about 6,700 gallons a month), a Wilsonville house pays about $50 a month for water and about $124 for sewer and other utility-bill charges: about $2,090 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Wilsonville houses, what it costs, and how the sewer charge works.
City of Wilsonville
Monthly residential rates effective January 1, 2026: base fee for a 5/8" x 3/4" meter of $18.13 includes the first 2 units (1 unit = 100 cubic feet); units 3-8 are $4.23 each and units 9 and up are $6.13 each. The fire charge is included in the residential base fee.
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $18.13 a month |
| 0 to 2 units | $0.00 |
| 2 to 8 units | $4.23 |
| 8 to more | $6.13 |
- Source
- Treated Willamette River water from the City's Willamette River Water Treatment Plant
- Disinfection byproducts
- Total trihalomethanes averaged 11.9 ppb (limit 80) and haloacetic acids 4.5 ppb (limit 60), no violation
- Violations
- The 2026 report lists no violation for nitrate, lead, copper or disinfection byproducts
Sewer
Monthly sewer base fee of $23.12 from April 1, 2026 includes the first 2 units; each additional residential unit is $10.31. Residential sewer is based on the winter average of water use from November through March, recalculated each April.
Other charges on the utility bill
- Stormwater: $17.65 a month
- Road maintenance: $11.24 a month
How Wilsonville compares with nearby cities
Water, a month
- West Linn · 7 mi$45
- Wilsonville$50
- Canby · 5 mi$61
- Tigard · 8 mi$64
- Tualatin · 5 mi$65
- Lake Oswego · 8 mi$68
Water only, at each city's typical use; sewer is left out because some cities bill it on the tax bill.
Sources
Checked October 28, 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.
Water bill in other Oregon cities
Albany water billAshland water billBeaverton water billBend water billCanby water billCorvallis water billSt. Helens water billSweet Home water billTigard water billTroutdale water billTualatin water billWest Linn water billAll Oregon cities →