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Determining how Much Water We Use

In this country, the in-home use of water averages about 80–100 gallons per day, per person. That’s 29,200 to 36,500 gallons per year, per person. This is for personal use and does not include lawn, garden and other outdoor uses of water. So where does all of this water go?

Activity Gallons
Flushing low flow or ultra-low flow toilet, per flush 1.3-1.6
Flushing conventional toilet, per flush 3.6
Showering, per shower 17.2
Bathing, per bath 24
Brushing teeth, per brush 1
Washing dishes by hand per load 1
Dishwashing, per load 9.3
Washing machine, per load 40
Cooking meal, per person 3
Washing car, per car 20
Water lawn/garden for 30 minutes 240