Water Main Flushing

Rockville has a systematic flushing program to remove accumulated sediment from the water system. The city is divided into 39 districts and undergo water main flushing in cycles.

Flushing Hours

Monday - Friday from 7 a.m. to 3 p.m.

2023 Scheduled Districts

Week of April 10: District 21
Week of April 17: District 33
Week of May 1: District 32
Week of May 8: District 31
Week of May 15: District 27
Week of June 5: District 28
Week of June 12: District 29
Week of June19: District 30
Week of July 10: District 25
Week of July 17: District 26
Week of July 24: District 3
Week of August 7: District 1
Week of August 14: District 2
Week of August 21: District 22
Week of September 4: District 23
Week of September 11: District 36
Week of September 18: District 37
Week of October 2: District 35
Week of October 9: District 24

Some parking restrictions may occur to allow access to water valves. As flushing takes place, some temporary discoloration and low water pressure may occur.

Repairs, disruptions and maintenance to water mains may cause your water to be discolored.

If you experience discoloration, run the cold water until the water runs clear. These conditions are temporary and should clear up within 2-3 hours.

Find your Water Main District

View a map of the 39 water main district and find which district you live in. Districts are flushed on a rotating cycle.

Water Main Flushing Process

The city removes the chlorine from the water prior to discharge to safeguard the environment.

Rockville maintains:

Approximately 180 miles of water pipes.
4,168 valves.
1,363 fire hydrants.

The sediment, which can cause water discoloration, degrade water quality and impede fire hydrant water flow, is removed from the pipes by the planned opening and closing of certain valves, as well as the opening of fire hydrants.

The City of Rockville is committed to providing the best possible services to customers. This work is part of ongoing efforts to improve water quality and delivery citywide.

Water Main Flushing

2023 Scheduled Districts

Water Main Flushing Process

Past Annual Drinking Water Quality Reports

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