01

Look for continuous use

A stable amount of extra daily consumption often points to a continuous leak. Irrigation and guests usually create irregular or seasonal patterns instead.

02

Run a no-use meter test

Turn off faucets, appliances, irrigation and ice makers, then record the meter. Do not use water for a set period and check again. Movement suggests water is flowing somewhere.

  • Check toilets with dye
  • Inspect irrigation valves
  • Look at the water-heater relief line
  • Review utility hourly-use data if available
03

Act on active leaks

The calculator estimates utility cost, not property damage. Shut off the supply and contact a qualified plumber when water is actively damaging the building.

Editorial standard

This guide explains general billing math. Utility tariffs and local rules control your actual charges. Sources and update practices are documented in our methodology.

Read the methodology →