Dauphin Island Reverse Osmosis Water Treatment Plant

Ardurra delivered planning, permitting, design, and construction management services for Dauphin Island Water and Sewer Authority's (DIWSA) transformative 1.3 MGD water treatment plant replacement, including Well No. 6 development and complete water system infrastructure upgrades. The project required constructing the new facility on the same site as the existing plant while maintaining continuous water service to island customers who had no alternative water source.

The DIWSA WTP achieved historic recognition as the first LEED Silver-Certified municipal water treatment facility in the southeastern United States, demonstrating exceptional commitment to energy efficiency and environmental stewardship. The project utilized American Recovery and Reinvestment Act (ARRA) funding through State Revolving Loan funds, with Ardurra securing $4.2 million in grant assistance and $2.7 million in low-interest loans.

Key Project Achievements:

• Designed 1.3 MGD reverse osmosis treatment facility with pretreatment, chlorides removal, H2S/CO2 aeration, and new finished water storage systems

• Developed Well No. 6 in Deep Sands Aquifer with extensive hydrogeological studies and modeling for Coastal Zone Permitting

• Achieved first LEED Silver certification for municipal water treatment facility in the southeastern United States through energy-efficient design

• Constructed 1.0 MG prestressed concrete storage tank with degassifier and corrosion-resistant materials, including epoxy-coated interior

• Installed infrastructure, including 6,000 LF of 12-inch raw water main and 21,000 LF of distribution mains

• Secured $6.9 million in ARRA funding through strategic grant assistance and low-interest loan coordination

• Maintained continuous operations during construction through careful planning and construction management

The project provides Dauphin Island with reliable, high-quality water treatment while establishing new benchmarks for sustainable municipal infrastructure. Strategic financing coordination and innovative LEED certification demonstrate a commitment to environmental stewardship and energy efficiency in the development of critical municipal infrastructure.