8.3 : Commercial Sector Water Consumption




8.3.5 Normalized Annual End Uses of Water in Select Hotels in Western United States (Gallons per Room per Year) (1)
Budget Hotels Luxury Hotel
Range of Water Use Range of Water Use
Fixture/End Use (gal/room) (gal/room)
Bathtub 986 (2) 2,331
Faucets 2,196 - 2,683 6,297
Showers 10,203 - 13,724 32,453
Toilets 9,493 - 11,986 28,047
Leaks 439 - 8,007 5,351
Laundry 6047 - 12,027 74,480
Ice making 811 - 1,568 (3) 0
Other/misc. indoor 946 - 9,953 0
Total Indoor Use 37,703 - 50,696 82,770
Number of Rooms 140 - 209 297
Logged average daily use, kgal: 18.6 - 29.3 59.3
Peak instantaneous demand, gpm: 40.5 - 106.9 130.7
Benchmarking Values for Hotels N 25th Percentile of Users
Indoor Use, gal./day/occupied room 98 60 - 115
Cooling Use, gal./year/occupied room 97 7,400 - 41,600
Note(s): Based on four budget hotels and one luxury hotel. Three budget hotels in Southern California, one in Phoenix, AZ. Luxury hotel in Los Angeles, CA. 1) Water use data for the buildings was collected over a few days. Estimates of annual use were created by accounting for seasonal use and other variables, billing data, and interviews with building managers. 2) Based on one hotel. 3) Based on three hotels. 5) The study derived efficiency benchmarks by analyzing measured data and audit data. The benchmark was set at the lower 25th percentile of users.









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