Duluth, Minnesota: water and wastewater capital improvement projects
45 line items · $142M · starting 2026–2029 · 1 plan
Duluth's published capital plans list 45 water, sewer and wastewater line items with a combined planning budget of $142M, of which 12 items worth $14M sit in the wastewater and sewer departments. The largest single item is Lead Service Replacement Project (49% Grant if Awarded) at $96M (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 Duluth
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Lead Service Replacement Project (49% Grant if Awarded) | Water Distribution | Lead service line replacement | $96M | 2025–2029 |
| 2 | Citywide Sanitary Sewer Rehabilitation/Lining | Sewer | Sewer rehabilitation and I&I | $9M | 2025–2029 |
| 3 | Upgrade 5 Water Filters | Water Supply | Membranes and filtration | $5M | 2027 |
| 4 | W. Superior Street, Michigan to Carlton St | Water Distribution | Water mains and distribution | $3M | 2026–2028 |
| 5 | Lift Station Rehabilitation (LS 27 & LS 40 & LS 3 Cover) | Sewer | Lift stations | $3M | 2025–2029 |
| 6 | 4th Street, 6th Ave E to Mesaba – 24" Pipe | Water Distribution | Water mains and distribution | $2M | 2027–2029 |
| 7 | Central Entrance (MnDOT) Distribution Main and Services | Water Supply | Water mains and distribution | $2M | 2029 |
| 8 | Arlington Pump Station, Central Entrance (MnDOT Coordination) | Water Supply | Pump stations | $2M | 2027 |
| 9 | Filter #6 | Water Supply | Membranes and filtration | $2M | 2027 |
| 10 | Upper Lakeside Phase 3 Upgrades | Water Supply | — | $2M | 2028–2029 |
35 more line items in Duluth, with descriptions and contacts
Klarifi holds every Duluth line item with its description, the page it appears on and the source document. Track new plans as they are adopted and compare with similar projects in other cities.
Planned spend by start year
Before 2026
$116M
17 items
2026
$6M
12 items
2027
$12M
9 items
2028
$5M
5 items
2029
$2M
2 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Sewer | 12 | $14M | 10% |
| Water Supply | 20 | $20M | 14% |
| Water Distribution | 13 | $108M | 76% |
Project types in Duluth's plan
Wastewater treatment plants in Duluth
No publicly owned treatment plant is recorded under Duluth in the facility directory; the city may be served by a regional plant listed under another municipality. Browse all plants in Minnesota.
Other Minnesota cities with capital plans
Duluth capital plan questions
Sources and methodology
Budgets and years are as published in Duluth’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 (45 line items).
Data refreshed September 11, 2026.