Windsor, Colorado: water and wastewater capital improvement projects
28 line items · $474M · starting 2026–2030 · 1 plan
Windsor's published capital plans list 28 water, sewer and wastewater line items with a combined planning budget of $474M, of which 9 items worth $122M sit in the wastewater and sewer departments. The largest single item is Northern Integrated Supply Project (NISP) at $306M (2025–2030). 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 Windsor
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Northern Integrated Supply Project (NISP) | Water Supply | Planning, studies and asset management | $306M | 2025–2030 |
| 2 | Liquid Expansion Project | Wastewater | Wastewater treatment plant upgrades | $100M | 2025–2028 |
| 3 | Regional Water Treatment Plant | Water Supply | Water treatment plants | $20M | 2025–2030 |
| 4 | Headworks Improvement Project | Wastewater | Headworks, screening and grit | $13M | 2025–2026 |
| 5 | Water Line Replacement | Water Distribution | Water mains and distribution | $9M | 2025–2030 |
| 6 | AMI Water Meters | Water Distribution | Meters and AMI | $6M | 2026–2029 |
| 7 | Central Sewer System Upgrades | Sewer | Sewer rehabilitation and I&I | $5M | 2025–2029 |
| 8 | Gold Hill Zone 4 Pressure Booster Pump Station | Water Distribution | Pump stations | $3M | 2025–2030 |
| 9 | Water Line Oversizing | Water Distribution | Water mains and distribution | $2M | 2025–2029 |
| 10 | Sewer Line Oversizing | Sewer | Sewer rehabilitation and I&I | $1M | 2025–2030 |
18 more line items in Windsor, with descriptions and contacts
Klarifi holds every Windsor line item with its description, the page it appears on and the source document, plus 21 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
$463M
21 items
2026
$7M
3 items
2027
$2M
2 items
2030
$1M
2 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 2 | $113M | 24% |
| Sewer | 7 | $9M | 2% |
| Water Supply | 7 | $328M | 69% |
| Water Distribution | 12 | $24M | 5% |
Project types in Windsor's plan
Wastewater treatment plants in Windsor
1 publicly owned treatment plant in Windsor. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Town Of Windsor Sewarage Treatment Plant | 2.85 | CO0020320 | 0 |
Other Colorado cities with capital plans
Windsor capital plan questions
Sources and methodology
Budgets and years are as published in Windsor’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 (28 line items).
Data refreshed September 11, 2026.