Bill tool

Compare two water bills

Find out whether a higher bill comes from using more water, a longer billing period, or higher charges. Everything is calculated in your browser. Nothing you enter is sent to us.

From each bill you’ll need: the water used and its unit, the number of days billed, and the total of the current charges.

CCF and HCF both mean 100 cubic feet, about 748 gallons. Use the same unit for both bills.

Earlier bill

Often labeled usage or consumption, or the difference between two meter readings.

Count the days between the service dates if the bill doesn’t list them.

Leave out past-due balances and payments when they’re listed separately.

Newer bill

Often labeled usage or consumption, or the difference between two meter readings.

Count the days between the service dates if the bill doesn’t list them.

Leave out past-due balances and payments when they’re listed separately.

Why compare daily use instead of totals?

A 35-day bill will usually show more use than a 28-day bill even if the household behaves the same way. Dividing gallons by billing days gives a daily figure, which separates calendar length from changes in how much water you used.

CCF and HCF conversion

Many utilities bill in hundreds of cubic feet, abbreviated CCF or HCF. One CCF equals about 748 gallons. The calculator converts the unit you choose to gallons before working out daily use and cost per 1,000 gallons. Our guide to water rates, tiers, and CCF works through a real rate schedule.

What the calculator can’t tell you

A water bill may combine a fixed meter charge, tiered water rates, sewer, stormwater, taxes, previous balances, penalties, or assistance credits. The calculator compares the totals you enter. It doesn’t reproduce your utility’s rate schedule. It also can’t tell you whether your use is typical; how to compare your bill with averages explains which national figures are useful and where they fall short.

If daily use rose sharply, compare the meter readings and check whether either bill used an estimated reading. If use stayed about the same but the total rose, compare fixed charges, rate tiers, billing days, and any prior balance line by line.

Next steps

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