Water conservation is becoming critical as world demand rises at an alarming rate and clean supplies diminish. Adopting water efficiency measures can reduce water usage by 30% or more. In a typical 100,000 square foot office building, low flow fixtures coupled with sensors and automatic controls can easily save 1 million gallons per year. Non-potable water can be used for irrigation, toilet flushing, and other purposes. Annual utility savings can amount to thousands of dollars, resulting in rapid payback for water conservation measures.