Water Supply and Treatment Facility

Introduction

The City of Jacksonville is in the process of constructing a new Water Supply and Treatment Facility.  This project is a result of the State of North Carolina's 1999 Central Coastal Plain Capacity Use Rule.  In accordance with this rule the City must reduce its withdrawal from the Black Creek Aquifer by 25% (1 million gallons per day [mgd]) by August 2008, another 25% (1 mgd) by 2013, and a final 25% by 2018.  As the Black Creek Aquifer is the City's primary water source this rule means the City will lose approximately 75% of its water supply over the next ten years.  To replace this loss the City must obtain water from the Castle Hayne Aquifer.  The quality of the Castle Hayne Aquifer is much lower and requires treatment.

Project Components

Nanofiltration Water Treatment Plant - This plant is currently under construction in the City's Business Park behind the River of Life Church.  The plant has an interim capacity of 4 million gallons per day (mgd) with ultimate capacity of 8 mgd to serve the City of Jacksonville’s future water needs.


Exterior View of the new Water Treatment Plant

Exterior View of the Plant and chemical Storage Area

Pump room inside of Plant

View of the Process Area and Control Platform

Pictures of Nanofiltration Skids that will be located in the Process Area

Emergency Generation to Power the Plant

Storage Area for Chemicals used in the Treatment Process

Two Million Gallon Finished Water Storage to Meet Peak Demands

Mixing Tank used to Rapidly and Uniformly Dispense Chemicals into the Water

Typcial Degasifiers and Odor Control to be Mounted on the Mixing Tank









Castle Hayne Wells - Source water for the new facility will be drawn from the Castle Hayne Aquifer by a series of 20 production (8 constructed, 8 under construction, and 4 new) wells.  These wells are space all around the City with one currently located in Williamsburg Plantation on the City's property at the end of Fairmont Lane.  As the City continues to grow additional wells will be necessary.

Drilling New Castle Hayne Well at Williamsburg Plantation

Drilling New Castle Hayne Well at Piney Green

Transmission Mains - The raw water from these wells will be transferred to the new treatment facility through approximately 80,000 linear feet of new raw water transmission mains.  These mains will connect the wells from around the City to the treatment plant.  The first phase of this project is underway and will involve the construction of new water mains in areas including Cardinal Village, Williamsburg Plantation, Western Boulevard, the Commons, and along Marine Boulevard.

New Raw Water Transmission Main Extending Under Gum Branch Road









Concentrate Line and Diffuser - Minerals and other impurities extracted from the raw water will be transferred to the New River.  This requires the construction of approximately 19,000 feet of 16" concentrate line.  This line extends from the new water treatment plant to the diffuser which will be located in the New River off of Brookview Drive in Northwoods.

Typical Concrete Diffuser Setup