Carlsbad, California: water and wastewater capital improvement projects
53 line items · $369M · starting 2026–2030 · 1 plan
Carlsbad's published capital plans list 53 water, sewer and wastewater line items with a combined planning budget of $369M, of which 32 items worth $247M sit in the wastewater and sewer departments. The largest single item is Encina Capital Projects (EWPCF) at $160M (2024–2039). 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 Carlsbad
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Encina Capital Projects (EWPCF) | Sewer | — | $160M | 2024–2039 |
| 2 | Water System Rehabilitation and Replacement | Water Distribution | — | $56M | 2024–2039 |
| 3 | Sewer System Rehabilitation and Replacement | Sewer | Sewer rehabilitation and I&I | $37M | 2024–2039 |
| 4 | Water Valve Repair/Replacement Program | Water Distribution | Water mains and distribution | $16M | 2024–2039 |
| 5 | Buena Interceptor Sewer Improvements | Sewer | Force mains and interceptors | $11M | 2025–2039 |
| 6 | Tri-Agency Water Transmission Pipeline Replacement | Water Distribution | Water mains and distribution | $10M | 2025–2039 |
| 7 | Pressure Reducing Station Program | Water Supply | — | $9M | 2024–2039 |
| 8 | Water Infrastructure Condition Assessment Program | Water Distribution | Planning, studies and asset management | $7M | 2024–2039 |
| 9 | Recycled Water Pipeline Replacement | Wastewater | Water mains and distribution | $7M | 2024–2039 |
| 10 | Carlsbad Water Recycling Facility (Encina Capital Projects) | Water Supply | — | $5M | 2024–2039 |
43 more line items in Carlsbad, with descriptions and contacts
Klarifi holds every Carlsbad line item with its description, the page it appears on and the source document, plus 11 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
$358M
47 items
2026
$6M
3 items
2028
$2M
1 items
2030
$3M
2 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 7 | $14M | 4% |
| Sewer | 25 | $233M | 63% |
| Water Supply | 11 | $23M | 6% |
| Water Distribution | 10 | $99M | 27% |
Project types in Carlsbad's plan
Wastewater treatment plants in Carlsbad
1 publicly owned treatment plant in Carlsbad with 11 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Encina Water Pollution Control Facility | 23.78 | CAL107395 | 11 |
Other California cities with capital plans
Carlsbad capital plan questions
Sources and methodology
Budgets and years are as published in Carlsbad’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 2024–2029 (53 line items).
Data refreshed September 11, 2026.