WE-Stand Water Demand Calculator provides a new alternative to Hunter’s Curve when estimating water supply demand for residential buildings! This achievement represents the first practical application of an improved method since the 1940s that does not result in excessive over design and oversizing pipes. The method is applicable for both single- and multi-family dwellings. A complimentary, easy-to-use Demand Calculator estimates the supply demand for the whole building, as well as cold and hot water branches and risers for indoor water use based on today’s plumbing fixtures and appliances and usage patterns. The Water Demand Calculator works in conjunction with any commonly accepted rules and procedures for sizing the water supply system. This results in: improved scouring action in water pipes, inhibiting biofilm growth; shorter water dwell times in premise plumbing systems, improving water quality; faster hot water delivery times throughout the plumbing system, saving energy, water and money; and reduced construction costs. Is this a big deal? You bet it is. Plumbing systems designed utilizing the new method will deliver water and energy efficiencies for the entire life of the plumbing system, at a reduced cost! It is now available for use with any baseline plumbing code.