Westminster, Colorado: water and wastewater capital improvement projects
50 line items · $197M · starting 2026–2029 · 1 plan
Westminster's published capital plans list 50 water, sewer and wastewater line items with a combined planning budget of $197M, of which 29 items worth $95M sit in the wastewater and sewer departments. The largest single item is Sheridan Blvd Watermain Repairs & Replacement -120th Ave to 92nd Ave at $18M (2027–2029). 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 Westminster
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Sheridan Blvd Watermain Repairs & Replacement -120th Ave to 92nd Ave | Water Distribution | Water mains and distribution | $18M | 2027–2029 |
| 2 | Westminster Boulevard Drinking Water Treatment Facility | Water Supply | Wastewater treatment plant upgrades | $17M | 2027–2028 |
| 3 | 92nd Ave Watermain Repairs & Replacement, Hwy 36 to Old Wadsworth Blvd | Water Distribution | Water mains and distribution | $14M | 2027–2029 |
| 4 | Big Dry Creek 54-inch Interceptor Sewer Repair & Replacement | Wastewater | Force mains and interceptors | $12M | 2025–2026 |
| 5 | Semper Rehabilitation | Wastewater | — | $8M | 2029 |
| 6 | Wattenberg Gravel Lakes Pump Station and Pipelines - Phase 2 | Water Distribution | Pump stations | $8M | 2026–2027 |
| 7 | 120th Ave Watermain Repairs & Replacement | Water Distribution | Water mains and distribution | $8M | 2027–2028 |
| 8 | 3-inch to 10-inch Master Meters and Potable Water Interconnects Repairs & Replacement | Water Distribution | Meters and AMI | $8M | 2028–2029 |
| 9 | BDCWWTF R&R Aeration Basins & Headworks | Wastewater | Aeration and blowers | $8M | 2028–2029 |
| 10 | BDCWWTF Solids Improvements Phase 1- Regulatory | Wastewater | — | $7M | 2027–2028 |
40 more line items in Westminster, with descriptions and contacts
Klarifi holds every Westminster line item with its description, the page it appears on and the source document, plus 20 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
$42M
16 items
2026
$35M
12 items
2027
$84M
11 items
2028
$23M
6 items
2029
$15M
5 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 24 | $84M | 42% |
| Sewer | 5 | $11M | 5% |
| Water Supply | 7 | $22M | 11% |
| Water Distribution | 14 | $81M | 41% |
Project types in Westminster's plan
Wastewater treatment plants in Westminster
1 publicly owned treatment plant in Westminster with 388 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Big Dry Creek WWTP | 6.9 | COR901608 | 388 |
Other Colorado cities with capital plans
Westminster capital plan questions
Sources and methodology
Budgets and years are as published in Westminster’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 (50 line items).
Data refreshed September 11, 2026.