Reducing Hotel Water Consumption

Water savings at Resorts and Casinos

Research shows that indoor water savings can occur at casinos, hotels, and resorts. While some studies only considered overnight guests, they did not include water used by day-trippers and other visitors who don’t stay at a hotel or motel. All factors include the estimated number of overnight guests, the hotel and motel rooms stock and the mix between old, inefficient fixtures or newer, more efficient fixtures required by federal law. Although behavioral modifications may be able to save water during droughts and prolonged supply interruptions, this analysis only considers water savings that can result from the adoption of more efficient technologies.


National plumbing standards currently govern the maximum flow rates of faucets. New faucets that are sold or installed in the United States must flow 2.5 gallons per minute (gpm) at 80 psi or less. Faucet flow rates were between 2.75 and 7.0 gpm before such standards were established. This is higher than the 40 million people who visit Las Vegas each year. This is because on average, guests spend 3.5 nights in Las Vegas. There are 140 million guest days each year. The difference in hotel guests and visitors is due to day trippers or those who visit the area with their family and friends.

Water Conservation and Efficiency at Las Vegas

Although it is difficult to determine the exact number of devices present in Las Vegas hotel rooms, according to our sources, about one third of all existing resort and casino rooms were built after the efficiency standards came into effect. Older rooms are likely to have modern fixtures because they have been recently renovated. The average faucet flow rate in a hotel room is 3 gpm, despite the fact that it has both new and old rooms. According to the Seattle Public Utilities Commission, each guest uses the faucet on average 3 minutes per day. These assumptions led us to estimate that the average daily faucet usage is approximately 9 gallons per guest. The national standard for 2.5 gpm fixtures would allow for a reduction in faucet usage to 7.5 Gallons per guest. This would result in a 400-acre-foot annual savings (AFY). You could save even more money by purchasing faucet aerators, which are inexpensive and widely available. They will reduce the flow rate to 1.5 gpm.


Current technology can be used to reduce hotel water consumption by substantial amounts. A 29% reduction in indoor water consumption can result in a daily indoor water requirement of 80 to 57 gallons for guests per day. The estimated reduction in diversions, given the 26 million Las Vegas overnight guests annually, would be 6.3 KAFY. Current, well-tested, and cost-effective technologies like toilets or clothes washers could provide the greatest savings. Research shows that water consumption can be reduced, which in turn can result in significant energy savings. This is especially true for hot water appliances like clothes washers and showerheads. Day-trippers who use the restrooms and eat in restaurants would make savings even greater.