North Seward Water Storage Tank and Pumping Facility
Start Date: May 2007.
End Date: May 2016
Project Location: Seward, Alaska
Working with the City of Seward’s (City) water utility, CRW provided planning, design, permitting, bidding, and construction administration for a new water storage tank and associated appurtenances. The multi-year, multi-phase project included a significant planning effort to locate a site for the new water storage tank and water well. The project included:
- 8,500 feet of 12-, 14-, and 16-inch diameter water transmission mains.
- A 1,500 square foot building housing pumps, controls, an on-site hypochlorite generator, and a backup power generator.
- A high-production (960 gpm) water well.
- A 500,000 gallon insulated welded steel water storage tank.
- A high demand pump to provide fire flow.
In addition to providing another 500,000 gallons of water storage for the City, the new tank provides chlorine contact time that the existing system configuration did not previously allow. An automated control valve allows treated water to flow from the tank through the distribution system, and fill the City’s lower pressure zone. The pressure pumps boost water to the upper pressure zone.
The new water well was developed adjacent to the new building and can be powered by the backup generator in the event of a power outage. The new controls provide the City its first integrated solution to control their entire water system, which consists of four groundwater wells, four water storage tanks, and three pressure zones from one location. New transducers were installed in each of the existing wells to monitor aquifer levels, and the City now tracks and records the response of the aquifer to the well pumping operations.