Seattle water and sewer rates
At typical use (4.3 units, about 3,200 gallons a month), a Seattle house pays about $47 a month for water and about $146 for sewer and other utility-bill charges: about $2,310 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Seattle houses, what it costs, and how the sewer charge works.
Seattle Public Utilities
Inside Seattle: $21.35 a month for a 3/4" meter, plus $5.82 per CCF off-peak (Sept. 16 - May 15).
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $21.35 a month |
| 0 to 5 units | $5.87 |
| 5 to 18 units | $6.34 |
| 18 to more | $7.81 |
Sewer
$20.18 per CCF; there is a one CCF minimum charge per premise per month.
Other charges on the utility bill
- Drainage (assumed 4,500-5,499 sq. ft. lot; on your property tax bill): $58.89 a month
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.