Estimate SPU drinking water charges for a single-family home inside Seattle, for a period entirely within one rate season.
Rate period: 2026 rates through December 31, 2026. Source checked October 1, 2026. Independent estimate; not an official utility calculator.
Your estimated water charges plus entered extras
| Water consumption charge | — |
|---|---|
| Water base service charges | — |
| Other entered charges | — |
Enter your usage to begin.
Rates and calculation method
Inside-Seattle off-peak water is $5.82 per CCF. Peak rates for 60 days: first 10 CCF $5.98, next 26 $7.39, and remaining usage $11.80 per CCF. For 30 days, the tier volumes are halved.
A 3/4-inch or smaller service has a $21.35 monthly base charge. Ten CCF in a 60-day off-peak estimate totals $100.90 for water only.
Official rate source
Seattle Public Utilities residential water rates
Why might my actual bill differ?
This excludes automatic sewer and drainage charges, bills spanning peak and off-peak dates, other period lengths, duplex or master-meter rules, and outside-city rates. Bills crossing a rate change need separate calculations. Your provider’s rounding and adjustments may differ.
Can I pay my bill here?
No. This is an independent estimating tool. Use your utility’s official website for payments and account questions.
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