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The Importance of Unidirectional Flushing (UDF) Programs for Water Utilities

Tuberculation or build-up on pipe walls is a key issue in distribution systems. These deposits most frequently caused by corrosion and microbial activity, affect both the quality and quantity of the water supply. Excessive tuberculation greatly reduces distribution system efficiency and has a negative impact on water quality. In fact, AWWA has noted that distribution system deficiencies are responsible for over 25 percent of waterborne disease outbreaks in the United States each year.

A regularly scheduled Unidirectional Flushing (UDF) Program is one of the simplest and most cost-effective ways of maintaining the health and safety of a water distribution system. The primary goal of UDF Is to clean water mains however, there are several additional benefits of a routine UDF Program:

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  1. UDF provides the added benefit of learning critical information about the system which allows utilities to plan and make improvements to the system
  2. UDF helps to regularly exercise hydrants and valves, prolonging the life of these assets and helping to locate any closed or broken valves.
  3. Flushing also helps to pinpoint the cause of water quality or pressure issues in a specific area of the system.
  4. Flushing allows system issues to be discovered before they become critical and require emergency service.

To learn more about Wachs Water Services Unidirectional Flushing services, read our article by clicking here.

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