What is UDF?
UDF is a process by which water is forced through a water pipe at a velocity high enough to remove material build-up from within the pipe. The water used during the UDF process is discharged through a fire hydrant. Material removed in this process is harmless and requires no special treatment. UDF consists of isolating a particular pipe section or loop (typically through closing appropriate valves) and exercising the hydrants in an organized, sequential manner. Because the process isolates small sections of the water distribution system at a time, the UDF program will take 6-7 months to complete.

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1. What is UDF?
2. Why is UDF Important?
3. Does UDF waste water?
4. How will I be affected?
5. What if my water is discolored?