Tampa Bay Regional Surface Water Treatment Plant Expansion

Tampa Bay Water broke ground in March 2026 on a $181 million expansion of its Regional Surface Water Treatment Plant, adding up to 12.5 million gallons per day of drinking water capacity. The agency is the largest wholesale water supplier in the southeastern United States, and the arithmetic behind the project is simple: the service population kept growing and the existing plant was projected to run short.

Project Scope

The expansion adds treatment trains to the existing surface water plant, which draws from the Alafia River, the Hillsborough River and the Tampa Bypass Canal and stores raw water in the C.W. Bill Young Regional Reservoir. Tampa Bay Water is delivering the work through a long-running public-private partnership with Veolia Water North America and CDM Smith, an unusual arrangement for a U.S. municipal water utility at this scale. Funding layers existing and newly issued revenue bonds with federal and state grants. The added capacity is scheduled to be online in 2028 and sized to meet regional demand through 2033.

The agency wholesales to Hillsborough, Pasco and Pinellas counties plus the cities of Tampa, St. Petersburg and New Port Richey. That governance structure is part of why the project exists at all: no single member could have financed regional capacity on its own.

Why It Matters

Tampa Bay’s water system is the product of a settlement. Groundwater pumping in the 1990s dropped lake levels and dried wetlands across the northern Tampa Bay area, and the resulting agreements forced the region to cut withdrawals and replace that supply with surface water and desalination. Every expansion since has been a step further away from the aquifer.

Adding 12.5 mgd of surface capacity in a region with this much population growth is a straightforward utility project with a complicated history behind it. It’s also a reminder of a pattern showing up across the Sun Belt: the binding constraint on growth is shifting from land and permits toward water and power. Utilities that build capacity ahead of demand get to keep approving development. The ones that don’t become the reason projects stall.

Project Team & Details