Water main flushing is performed, weather permitting, twice each year - in the spring and the fall.
Why We Flush Mains
Flushing of the Jamestown water distribution system accomplishes several things:
By systematically opening hydrants and allowing the water to run full force, the utility flushes out minerals, sediment and corrosion products that have settled in the mains.
Flushing mains serves as an opportunity for the operators to perform valve and hydrant inspections for optimal fire protection.
This process allows the utility to achieve greater flows through its mains.
An alternative to flushing is to add corrosion inhibiting chemicals to the water system. The Board of Public Utilities performs water main flushing rather than this alternative because:
Each time you add a chemical to the water, you change the water's taste, odor, appearance and "mouth feel." The utility firmly believes in adding only the minimum of chlorine needed for disinfection and fluoride for tooth decay prevention.
The cost of water would escalate due to the cost of the chemicals and monitoring.