Water and Sewer Bill Calculator

Estimate water and sewer charges with separate billed volumes and rate units. Use the sewer volume supplied by your utility if it differs from water usage.

Usage, rates, and fees

Flat rates only. Enter consumption and fees for the same billing period. If sewer is capped or based on a winter average, enter the actual billed sewer volume; this tool does not calculate that allowance.

Your results

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Estimated charges for one billing period
Water including fixed fee—
Sewer including fixed fee—
Other fees—
Tax / surcharge—

Enter your values to begin.

Water and sewer can use different volumes

Enter the sewer billed volume from your bill or your provider’s rules. Do not assume every gallon used outdoors is excluded from sewer billing.

Example estimate

Water: 5,000 gallons at $6 per 1,000 gallons plus $15 fixed = $45. Sewer: 4,000 gallons at $4 per 1,000 gallons plus $10 fixed = $26. With no other fees or tax, the total is $71.

These are example rates, not a city’s official rates.

Can I use progressive tiers here?

This tool uses flat rates. For a two-tier water rate, use the main water bill calculator. More complex schedules require a utility-specific calculation.

How does tax work?

The percentage applies to water, sewer, fixed fees, and other fees together. If your utility taxes only certain charges, leave the percentage at zero and enter the separately calculated tax under Other fees.

Calculations run in your browser. Results are estimates. Read the disclaimer.

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