Shelby, Montana: water and wastewater capital improvement projects
17 line items · $33M · starting 2026–2030 · 1 plan
Shelby's published capital plans list 17 water, sewer and wastewater line items with a combined planning budget of $33M, of which 5 items worth $16M sit in the wastewater and sewer departments. The largest single item is Phase 4 Collection Improvements at $9M (2034–2040). 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 Shelby
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Phase 4 Collection Improvements | Wastewater | — | $9M | 2034–2040 |
| 2 | Distribution Improvements | Water Distribution | Water mains and distribution | $5M | 2024–2032 |
| 3 | Phase 3 Collection Improvements | Wastewater | — | $4M | 2030–2032 |
| 4 | Prison Tank Recoating | Water Supply | Storage tanks and reservoirs | $3M | 2036 |
| 5 | Wellfield Clearwell: 500,000-gallon Clearwell tank | Water Supply | Storage tanks and reservoirs | $3M | 2026 |
| 6 | South Tank Distribution Improvements | Water Supply | Water mains and distribution | $2M | 2030 |
| 7 | Transportation Corridor Improvements | Water Supply | — | $2M | 2032 |
| 8 | Phase 2 Collection Improvements | Wastewater | — | $2M | 2028 |
| 9 | Concrete Tank | Water Supply | Storage tanks and reservoirs | $2M | 2034 |
| 10 | Shelby Heights Booster Station Improvements | Water Supply | Pump stations | $1M | 2028 |
7 more line items in Shelby, with descriptions and contacts
Klarifi holds every Shelby line item with its description, the page it appears on and the source document, plus 2 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
$5M
2 items
2026
$4M
6 items
2028
$3M
2 items
2030
$6M
2 items
2032 and later
$15M
5 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 4 | $16M | 47% |
| Sewer | 1 | $213K | 1% |
| Water Supply | 7 | $11M | 33% |
| Water Distribution | 5 | $6M | 19% |
Project types in Shelby's plan
Wastewater treatment plants in Shelby
1 publicly owned treatment plant in Shelby with 20 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| City Of Shelby Wastewater Lagoons | 0.53 | MT0031488 | 20 |
Other Montana cities with capital plans
Shelby capital plan questions
Sources and methodology
Budgets and years are as published in Shelby’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 2024–2032 (17 line items).
Data refreshed September 11, 2026.