Portland, Oregon: water and wastewater capital improvement projects
208 line items · $3.8B · starting 2026–2029 · 2 plans
Portland's published capital plans list 208 water, sewer and wastewater line items with a combined planning budget of $3.8B, of which 62 items worth $806M sit in the wastewater and sewer departments. The largest single item is Bull Run Filtration at $1.0B (2025–2029). 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 Portland
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Bull Run Filtration | Water Supply | Membranes and filtration | $1.0B | 2025–2029 |
| 2 | Bull Run Filtration | Water Supply | Membranes and filtration | $634M | 2024–2027 |
| 3 | Bull Run Pipelines | Water Distribution | Water mains and distribution | $302M | 2025–2029 |
| 4 | Bull Run Pipelines | Water Supply | Water mains and distribution | $179M | 2024–2027 |
| 5 | Willamette River Pipe Crossing | Water Distribution | — | $114M | 2025–2030 |
| 6 | Distribution Mains | Water Supply | Water mains and distribution | $113M | 2025–2030 |
| 7 | Pump Station Improvement Program, FY20-FY24 - Shell | Sewer | Pump stations | $99M | 2025–2030 |
| 8 | Willamette River Pipe Crossing | Water Supply | Water mains and distribution | $98M | 2024–2027 |
| 9 | CBWTP Secondary Treatment Expansion Program | Wastewater | Aeration and blowers | $84M | 2025–2027 |
| 10 | Large Diameter Sewer Rehabilitation | Sewer | Sewer rehabilitation and I&I | $77M | 2025–2030 |
198 more line items in Portland, with descriptions and contacts
Klarifi holds every Portland line item with its description, the page it appears on and the source document, plus 1 verified contact 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
$3.7B
190 items
2026
$13M
9 items
2027
$6M
3 items
2028
$7M
3 items
2029
$2M
3 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 26 | $316M | 8% |
| Sewer | 36 | $490M | 13% |
| Water Supply | 71 | $2.2B | 60% |
| Water Distribution | 75 | $713M | 19% |
Project types in Portland's plan
Wastewater treatment plants in Portland
1 publicly owned treatment plant in Portland. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Gresham WWTP | 8.99 | OR0026131 | 0 |
Other Oregon cities with capital plans
Portland capital plan questions
Sources and methodology
Budgets and years are as published in Portland’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: Adopted Budget 2025–2026 (137 line items); CIP 2023–2027 (71 line items).
Data refreshed September 11, 2026.