Household · official-source review · reviewed 2026-10-09
A rising water bill hides in gallons, not feelings, and the utility's own units make the comparison possible.
Compare last period's gallons, this period's gallons, and your utility's rate to see what changed.
Households with a metered water bill and two consecutive billing statements.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Open the last two billing statements side by side.
Write the total gallons from each statement.
Find the rate per thousand gallons on the statement.
Compare the periods and check running fixtures for a leak.
Last period used 4,200 gallons; this period used 5,100. The audit shows a 21 percent rise and the dollar effect at your rate.
Use your own source and details. The example is not a record about a real person or organization.
U.S. Environmental Protection Agency, WaterSense · reviewed 2026-10-09
What this source supports: WaterSense publishes water-efficiency guidance and fixture specifications for homes and workplaces.
Source limit: Household water rates and fixture models differ. Use your own utility bill and fixture documentation.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This guide reads your statements. It does not contact the utility, detect leaks, or adjust rates.
Household water rates and fixture models differ. Use your own utility bill and fixture documentation.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Compare two billing periods in gallons and dollars so the change is visible in both units.
This App compares the numbers you enter. It does not read your meter, detect leaks, or dispute a charge.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Compare two billing periods in gallons and dollars so the change is visible in both units.
Free · no account · no upload
Open Water Bill Usage AuditThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Water Bill Usage Audit. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.