8.3 : Commercial Sector Water Consumption




8.3.2 Average Water Use of Commercial and Institutional Establishments (Gallons per Establishment per Day)
Average Variation % Total % of CI % Seasonal
Daily Use In Use (1) CI Use Customers Use (2)
Hotels and Motels 7,113 5.41 5.8% 1.9% 23.1%
Laundries/Laundromats 3,290 8.85 4.0% 1.4% 13.4%
Car Washes 3,031 3.12 0.8% 0.4% 14.2%
Urban Irrigation 2,596 8.73 28.5% 30.2% 86.9%
Schools and Colleges 2,117 12.13 8.8% 4.8% 58.0%
Hospitals/Medical Offices 1,236 78.5 3.9% 4.2% 23.2%
Office Buildings 1,204 6.29 10.2% 11.7% 29.0%
Restaurants 906 7.69 8.8% 11.2% 16.1%
Food Stores 729 16.29 2.9% 5.2% 19.4%
Auto Shops (3) 687 7.96 2.0% 6.7% 27.2%
Membership Organizations (4) 629 6.42 2.0% 5.6% 46.2%
Total 23,538 77.6% 83.3%
Note(s): Estimated from 24 months of water utility billing data in five Western locations: four locations in Southern California and one in Arizona. 1) Ratio of standard deviation of daily use to average of daily use. 2) Percent seasonal use is the difference between the average monthly use and the lowest monthly use over the average monthly use. 3) Includes auto repair shops, dealers, and service stations. 4) Includes religious organizations and other membership-based organizations.









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