EPA Issues $610 Million Water Loan to Transition Illinois Off Declining Aquifer
March 29, 2026 · 2 min read
David Almeida
The EPA announced a $610 million Water Infrastructure Finance and Innovation Act (WIFIA) loan to the Grand Prairie Water Commission on March 27, 2026, funding a massive infrastructure project to transition nearly 300,000 northeastern Illinois residents from a declining groundwater aquifer to Lake Michigan.
The Largest WIFIA Loan of the Year
The Grand Prairie Water Commission — comprising the cities of Crest Hill and Joliet and the villages of Channahon, Minooka, Shorewood, and Romeoville — will use the loan to construct a 62-mile regional water transmission network and upgrade existing water systems. The project addresses a longstanding crisis: the deep sandstone aquifer serving these communities has been steadily declining, threatening long-term water reliability for one of the fastest-growing regions in Illinois.
EPA's WIFIA program offers significant financial advantages over conventional municipal bonds. The commission can customize repayment schedules and defer principal payments for several years after substantial construction completion, saving an estimated $300 million over the life of the loan compared to traditional financing.
Why This Matters Beyond Illinois
The WIFIA program represents a model that water utilities nationwide should understand. Unlike traditional grants, WIFIA loans allow EPA to leverage limited federal dollars into much larger infrastructure investments — a $610 million loan requires only a fraction of that amount in federal credit subsidy.
Communities facing aging water infrastructure, aquifer depletion, or compliance challenges with Safe Drinking Water Act standards may find WIFIA a more practical path than waiting for competitive grant cycles. The program has now closed over $20 billion in cumulative loans since its inception, financing projects from coast to coast.
The Grand Prairie project also illustrates how regional collaboration — six municipalities forming a joint commission — can unlock federal financing at scales impossible for individual communities.
How Water Utilities Can Access WIFIA Financing
Interested municipalities and water authorities should review EPA's WIFIA program page for current lending criteria and application windows. Projects must exceed $20 million in total cost, or $5 million for communities under 25,000 residents, and demonstrate both creditworthiness and clear environmental benefits. Tools on grantedai.com can help identify whether your infrastructure project qualifies for WIFIA or similar federal programs.
For analysis of federal water infrastructure funding strategies, visit the Granted blog.