Yakima, Washington: water and wastewater capital improvement projects
38 line items · $84M · starting 2026–2029 · 1 plan
Yakima's published capital plans list 38 water, sewer and wastewater line items with a combined planning budget of $84M, of which 16 items worth $68M sit in the wastewater and sewer departments. The largest single item is Activated Sludge System Improvements at $21M (2027–2028). The ten largest items are listed below; the full list with descriptions and page references is in Klarifi.
A capital improvement plan (CIP) is a city’s multi-year budget for building and replacing infrastructure. The water, sewer and wastewater sections list each project with its budget and the years it is funded, which makes them the earliest public signal that a plant, pump station or pipe network is about to be upgraded, usually two to four years before a contract is awarded.
The largest water and sewer projects in Yakima
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Activated Sludge System Improvements | Wastewater | Biosolids, sludge and dewatering | $21M | 2027–2028 |
| 2 | Collection System Rehabilitation | Wastewater | Sewer rehabilitation and I&I | $13M | 2024–2029 |
| 3 | Biosolids Dewatering Improvements | Wastewater | Biosolids, sludge and dewatering | $7M | 2023–2025 |
| 4 | Services & Pass-Through Payments | Wastewater | Planning, studies and asset management | $5M | 2024–2029 |
| 5 | Headworks Compactor Replacement | Wastewater | Headworks, screening and grit | $5M | 2026 |
| 6 | Repair & Maintenance | Wastewater | Generators, power and electrical | $5M | 2024–2029 |
| 7 | Cast Iron Waterline Replacement | Water Distribution | Water mains and distribution | $5M | 2025–2029 |
| 8 | Primary Digester / UASB Rehabilitation | Wastewater | Anaerobic digesters and biogas | $4M | 2024–2025 |
| 9 | Miscellaneous Waterline Replacement | Water Distribution | Water mains and distribution | $3M | 2026–2029 |
| 10 | Waste Activated Sludge Thickening Improvements | Wastewater | Biosolids, sludge and dewatering | $2M | 2025 |
28 more line items in Yakima, with descriptions and contacts
Klarifi holds every Yakima line item with its description, the page it appears on and the source document, plus 10 verified contacts at the city’s treatment plants. Track new plans as they are adopted and compare with similar projects in other cities.
Planned spend by start year
Before 2026
$53M
26 items
2026
$9M
6 items
2027
$22M
2 items
2029
$500K
4 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 16 | $68M | 81% |
| Water Supply | 12 | $3M | 4% |
| Water Distribution | 10 | $13M | 15% |
Project types in Yakima's plan
Wastewater treatment plants in Yakima
1 publicly owned treatment plant in Yakima with 1 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Yakima Regional Wastewater Facility | — | WA0024023 | 1 |
Other Washington cities with capital plans
Yakima capital plan questions
Sources and methodology
Budgets and years are as published in Yakima’s capital improvement plan or adopted budget. Klarifi extracts the water, sewer and wastewater line items from the published document, keeps the page reference for each one, and assigns a project type from the title and description with a keyword classifier. Figures are planning budgets, not awarded contracts, and can change when a plan is re-adopted.
Documents: CIP 2025–2029 (38 line items).
Data refreshed September 11, 2026.