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Where Your Water Goes

Do you know how much water you're using? The following chart shows how much water the average Denver Water household uses for each activity. And don't forget, leaks and leaky fixtures, such as toilets and faucets, will consume even more water.

Bathroom

Activity Number of Times*
Circumstances Water Used*
Total Use (gallons)*
Toilet Five Pre-1996 toilet 3.5 – 5 gallons per flush 17.5 – 25
Low-flow toilet 1.6 gallons per flush 8
High-efficiency toilet 1.28 gallons per flush 6.4
Ultra-high-efficiency toilet .8 gallons per flush 4
Shower One (8 minutes long)
Pre-1993 showerhead 3 – 8 gallons per minute 24 – 64
Standard showerhead 2.5 gallons per minute 20
Low-flow showerhead 1.5 gallons per minute 12
Bath Once Tub 1/4 to 1/3 full 7.5 – 15 gallons 7.5 – 15
Full tub 30 – 45 gallons 30 – 45
Shaving Once 1 full basin 1 gallon 1
Running water, five minutes 2.2 gallons per minute 11
Brushing teeth Twice Brush and rinse 0.25 – 0.5 gallon 0.5 – 1
Running water, two minutes 2.2 gallons per minute 4.4
Hand washing Seven (15 seconds) Standard aerator 2.2 gallons per minute 7.7
Low-flow aerator 0.5 gallon per minute 0.875

* Per person per day

Kitchen

Activity Number of Times* Circumstances Water Used* Total Use (gallons)*
Cooking Washing produce One full kitchen basin 1 – 2 gallons
1 – 2
Running water, three minutes 2.2 gallons per minute 6.6
Dishwasher Once – full load Water-conserving model 4.5 – 7 gallons 4.5 – 7
Standard cycle 10 – 14 gallons 10 – 14
Dishwashing by hand Once Full basin/wash and rinse 2 – 4 gallons 2 – 4
Running water, five minutes 2.2 gallons per minute 11

* Per day

Miscellaneous

Activity Number of Times Circumstances Water Used Total Use (gallons)
Laundry Once Front-load washer 13 – 20 gallons/load 13 – 20
Conventional top-loader 35 – 50 gallons/load 35 – 50
Car washing Once Five full two-gallon buckets 10 gallons/wash 10
Hose for 5 minutes 5/8-inch hose 32
Lawn watering During hot dry spells, Kentucky bluegrass needs ¾ of an inch of water twice a week, turf-type tall fescue needs ½ to ¾ of an inch of water twice a week, and buffalo grass needs ½ to ¾ of an inch every other week.