How much water does the average household use?

The average US household uses about 300 gallons per day including outdoor use. Indoor use averages 80-100 gallons per person per day.

What uses the most water at home?

Toilets (24%), showers (20%), faucets (19%), and clothes washers (17%) account for 80% of indoor use. Outdoor irrigation can equal or exceed indoor use.

How can I reduce indoor water use?

Install low-flow showerheads (1.5 GPM), replace old toilets with 1.28 GPF models, fix leaks promptly, and run full loads in washers and dishwashers.

Daily Water Usage Calculator

Calculate your household daily water consumption from showers, toilets, faucets, laundry, and outdoor use.

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Total Shower Minutes per Day

minutes

Showerhead Flow Rate

gal/min

Toilet Flushes per Day

Gallons per Flush

gallons

Other Daily Use (faucets, laundry, dishes)

gallons

Daily Water Usage

96.0 gallons

Monthly Usage2,880 gallons

Annual Usage35,040 gallons

Shower Share41.7 %

Daily Water Usage vs Total Shower Minutes per Day

View formula & how it works →

How to Calculate Daily Water Usage

Household water use can be broken down by fixture and activity.

Average Usage

Showers: 2.0-2.5 gal/min (17% of indoor use)

Toilets: 1.6 gal/flush (24% of indoor use)

Faucets: 15-20 gal/day

Clothes washer: 15-30 gal/load

Dishwasher: 6-10 gal/load

Formula

Daily Total = Shower + Toilet + Other

The average American uses about 80-100 gallons per day indoors.

Example Calculation

A household with 16 min of showers, 10 flushes, and 40 gal other daily use.

01Shower: 16 * 2.5 = 40 gallons
02Toilet: 10 * 1.6 = 16 gallons
03Other: 40 gallons
04Daily total: 40 + 16 + 40 = 96 gallons
05Annual: 96 * 365 = 35,040 gallons

Daily Water Usage Calculator

How to Calculate Daily Water Usage

Average Usage

Formula

Example Calculation

Frequently Asked Questions

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