Use low-flow faucets. Equip restroom or break-room faucets or showers with low-flow restrictors. A low-flow faucet aerator emits less than 1.5 gallons of water per minute compared with 2.2 gallons for standard faucets. Older toilets use nearly 5 gallons of water per flush, while newer high-efficiency toilets use 2 gallons per flush. And pre-rinse spray valves — the hoses that restaurants use to rinse dirty dishes — emit 1.5 gallons per minute compared with 4 gallons per minute or more for standard valves.
Purchase water-efficient equipment. Various types of equipment used by businesses consume a lot of water but are available in water-efficient models or have less water-intensive alternatives. They may have higher up-front costs but can pay for themselves quickly through water and water-heating cost savings.
Reduce landscape water use. A green lawn can require dozens or hundreds of gallons of water a day to keep it lush. Consider planting native landscapes or other alternatives that need less water. Also consider installing a rain-harvesting system to collect water on site for landscape irrigation or using a sensored irrigation system to better control exterior water use.