Household Water Footprint Calculator

Quantify the annual water footprint for everyone in your home. Enter average daily direct use, the embedded water from food and goods, and optional lifestyle extras or greywater savings to see liters and gallons per year.

Number of people sharing the residence
Showers, taps, laundry and other on-site water
Embedded water from meals and products consumed
Optional. Defaults to 0 if left blank.
Optional. Defaults to 0% if left blank.

Examples

  • 3 people, 120 L/day direct use, 180 L/day diet, extras blank, 10% reuse ⇒ Annual household water footprint: 295,650 liters (78,102.50 gallons).
  • 2 people, 100 L/day direct use, 150 L/day diet, 40 L/day extras, reuse left blank ⇒ Annual household water footprint: 211,700 liters (55,925.25 gallons).

FAQ

How should I estimate the food and goods water footprint?

Use meal-plan studies or national averages. Typical mixed diets range from 150 to 250 liters per person per day, while plant-heavy diets can be lower.

What counts as other lifestyle water?

Include gardening, car washing, pool top-ups, or hobby usage that sits outside daily hygiene and cooking.

Can I model upgrades like low-flow fixtures?

Yes. Reduce the direct water input to reflect expected savings and apply a greywater percentage if you install reuse systems.

Additional Information

  • Direct water covers household taps, showers, cleaning, and laundry measured in liters per person per day.
  • Dietary water accounts for the virtual water embedded in food and consumer goods consumed daily.
  • Greywater reuse savings reduce the total footprint by the percentage of water recycled for non-potable tasks.

Related calculators