Flushing Hydrants

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The District periodically "exercises" the water delivery system by opening control valves and flushing hydrants. 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.


During the drought, we temporarily suspended the best management practice of flushing 25 percent of our water system annually. Crews flushed only when needed to resolve water quality issues. Regular flushing has resumed.