Entiat set to receive $1 million for wastewater plant upgrades

ENTIAT — The City of Entiat is set to receive $1 million in federal funding to help modernize and expand its wastewater treatment plant, a key first step in a much larger effort to keep pace with growth and avoid long-term development limits.

The funding is included in a Senate-approved appropriations package secured by U.S. Sen. Maria Cantwell that directs more than $22 million to water and wastewater projects in 21 communities across Washington state. The bill now awaits the president’s signature.

For Entiat, the money comes at a pivotal moment.

A wastewater facilities plan completed in the spring of 2025 laid out a challenge city officials have been grappling with for several years: the town’s treatment plant, last comprehensively upgraded in 2009, is now operating near its design limits. While the system continues to meet permit requirements, engineers found that both average and peak flows are already approaching capacity, leaving little room for additional growth.

Looking ahead, the pressure only increases.

The study projects that Entiat’s population could more than double over the next 20 years, growing from about 1,360 residents today to roughly 3,000 by 2044. At that scale, wastewater flows and pollutant loads would exceed the plant’s current design capacity by a wide margin, effectively putting a hard ceiling on new development unless major upgrades are made.

To prevent that, engineers recommended a multi-phase modernization of the city’s wastewater system. The plan includes expanding the plant’s core treatment capacity, upgrading aging equipment, improving solids handling, and making targeted improvements to parts of the collection system. Taken together, the full program is expected to cost on the order of $15 million to $17 million over the coming years, depending on inflation and financing.

That long-range price tag is what pushed the city to start seeking outside funding.

The $1 million included in the federal package would help pay for early phases of the project, moving Entiat from planning into design and, eventually, construction. City officials have said that without outside assistance, rate increases alone would make the project difficult to carry — and could delay work long enough that the system becomes a binding constraint on growth.

In 2022, the city imposed a development moratorium to prevent new sewer connections from overwhelming the plant while planning work was underway. The new funding is intended to help move the city out of that holding pattern and into the next phase of the project.

Entiat is one of 21 communities statewide slated to receive water infrastructure funding under the Senate bill. Other projects in Eastern Washington, including in communities in Grant, Yakima, and Spokane counties, are also included, part of a broader effort to address aging water and wastewater systems across the region.

For Entiat, though, the issue is intensely local.

The wastewater treatment plant sits quietly at the center of many of the town’s biggest questions: how much it can grow, where that growth can happen, and how much it will cost to support it. The engineering study makes one thing clear — the system has carried the town as far as it can in its current form.

The federal funding does not solve the entire problem, but it represents a critical first step toward a much larger rebuild. City officials say it puts Entiat on a path toward a system that can support growth for decades to come, rather than one that constrains it.

Andrew Simpson: 509-433-7626 or andrew@ward.media