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Contractors and Public Works Troubleshoot Valve Connection During Water Line Project

Last week Public Works installed a new valve at the interconnection of the new 12” Main Street line and the existing 12” Washington Street Line (west side).  This was performed last Friday, 12 to 4 AM, to avoid disruption to downtown businesses.  On Wednesday, the contractor's crews isolated (closed) this valve in the performance of their work.  At approximately 11:30AM, the restraining gland on the next joint downstream of the valve, on the older existing Washington Street line failed.  This section of the Washington Street line separated, and a major water leak ensued.  The leak was significant enough to rapidly lower the water surface elevation of the Houston Street tank and deplete system pressures through much of the area.  The existing water system in the immediate area of the break was isolated so that repairs could be performed.  Temporary services were installed where practical to keep businesses open.  The existing system was shut down from approximately noon on Wednesday until 6PM.  After this time, the system was re-energized.

On Thursday morning, the valve referenced above was found to have a leaking joint.  Public Works and the contractor agreed that a new valve should be installed.  Again the water system in the vicinity of the valve was isolated.  Work is presently underway to replace the valve.  Operations are anticipated to be complete by noon Thursday.

Read more about this project here.