Dublin San Ramon Services District periodically "exercises" the water delivery system by opening control valves and flushing hydrants. One quarter of the hydrants in the District are flushed annually.
Natural sediment builds up in water lines over time. If neglected, this build-up can affect water quality and make it difficult to shut down water lines during maintenance or emergencies. Flushing is especially important where pipes dead-end, such as on many cul-de-sacs.
Although it may look like water is being wasted, flushing is necessary to properly maintain the water system and is required by the State Department of Public Health.
Customers in the immediate area may experience low pressure for approximately 15-30 minutes during the operation.
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