Water is the most widely used natural resource in the U.S., with approximately 42 billion gallons consumed daily to support activities ranging from bathing to industrial manufacturing, according to the U.S. Environmental Protection Agency’s (EPA) “Water Audits and Water Loss Control for Public Water Systems.” Yet, in municipalities, approximately 6 billion gallons of water are lost to leaks every day, and inefficient practices result in excess energy costs up to 30 percent. The nation’s aging infrastructure includes more than 2 million miles of water distribution pipes, most past their life expectancy. This means leaks can go unnoticed until a significant break occurs. Along with the estimated 240,000 water main breaks that occur each year, leaks and smaller breaks add up to a water loss of between 14 and 18 percent of total distribution.
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Siemens Process Instrumentation
05/22/2019
Image 1. Incorporating leak detection into a system can help regain potential revenue lost due to leaks. (Image courtesy of Siemens)
In addition to the energy used to treat and distribute the water that is lost, inefficient practices have an impact on the bottom line. Utilities can be subject to peak pricing schedules of electricity suppliers. Unfortunately for municipalities, peak water demands coincide with peak electricity demands of consumers. This increased demand means higher energy costs for pumps and, therefore, higher overall costs to plants. It is estimated by the EPA’s Office of Water that electricity accounts for 80 percent of municipal water processing and distribution costs—and utilities can reduce costs between 15 to 30 percent by incorporating efficiency practices.