Corona, California: water and wastewater capital improvement projects
40 line items · $240M · starting 2026–2030 · 1 plan
Corona's published capital plans list 40 water, sewer and wastewater line items with a combined planning budget of $240M, of which 10 items worth $50M sit in the wastewater and sewer departments. The largest single item is Potable Waterline Replacement Project #3 at $36M (2026–2035). 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 Corona
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Potable Waterline Replacement Project #3 | Water Distribution | Water mains and distribution | $36M | 2026–2035 |
| 2 | Potable Waterline Replacement Project #2 | Water Distribution | Water mains and distribution | $31M | 2026–2035 |
| 3 | Potable Waterline Replacement Project #1 | Water Distribution | Water mains and distribution | $26M | 2026–2035 |
| 4 | Water Reclamation Facility #1B Energy Efficiency | Wastewater | Wastewater treatment plant upgrades | $23M | 2027 |
| 5 | Grand Quad Waterline Replacement | Water Distribution | Water mains and distribution | $16M | 2033 |
| 6 | Water Storage Tank in 1380-Zone | Water Supply | Storage tanks and reservoirs | $15M | 2027 |
| 7 | Stagecoach Lift Station and Force Main Replacement | Water Distribution | Lift stations | $12M | 2032 |
| 8 | Water Reclamation Facility #2 Equalization Basin Replacement | Wastewater | Wastewater treatment plant upgrades | $10M | 2026–2027 |
| 9 | PFAS and 1, 2, 3-TCP Remediation | Water Distribution | PFAS treatment | $7M | 2027 |
| 10 | Airport Lift Station Replacement | Water Distribution | Lift stations | $6M | 2033 |
30 more line items in Corona, with descriptions and contacts
Klarifi holds every Corona line item with its description, the page it appears on and the source document, plus 6 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
2026
$115M
14 items
2027
$71M
15 items
2030
$3M
1 items
2032 and later
$51M
10 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 7 | $39M | 16% |
| Sewer | 3 | $11M | 5% |
| Water Supply | 4 | $20M | 8% |
| Water Distribution | 26 | $171M | 71% |
Project types in Corona's plan
Wastewater treatment plants in Corona
2 publicly owned treatment plants in Corona with 56 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Western Riverside Co Reg WWTP | 8.54 | CA8000316 | 47 |
| Corona WWTP 1 | 7.64 | CA8000383 | 9 |
Other California cities with capital plans
Corona capital plan questions
Sources and methodology
Budgets and years are as published in Corona’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 2026–2035 (40 line items).
Data refreshed September 11, 2026.