Eureka, California: water and wastewater capital improvement projects
17 line items · $49M · starting 2026–2028 · 1 plan
Eureka's published capital plans list 17 water, sewer and wastewater line items with a combined planning budget of $49M, of which 10 items worth $35M sit in the wastewater and sewer departments. The largest single item is WWTP Improvements - Eliminate Bypass at $20M (2025–2027). 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 Eureka
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | WWTP Improvements - Eliminate Bypass | Wastewater | Wastewater treatment plant upgrades | $20M | 2025–2027 |
| 2 | Water Distribution System Annual Maintenance & Repair | Water Distribution | Water mains and distribution | $9M | 2025–2030 |
| 3 | Wastewater Collection System Maintenance | Sewer | Sewer rehabilitation and I&I | $5M | 2025–2030 |
| 4 | Bio Solids Dewatering | Wastewater | Biosolids, sludge and dewatering | $3M | 2026–2029 |
| 5 | Tank Recoating (Low Tank & Lundbar Hills Tank | Water Supply | Storage tanks and reservoirs | $2M | 2026–2028 |
| 6 | Eureka Slough Water Main | Water Distribution | Water mains and distribution | $2M | 2028–2030 |
| 7 | WWTP Outfall Maintenance | Wastewater | Force mains and interceptors | $2M | 2025–2027 |
| 8 | Enclosed Bays & Est. Compliance Feasibility Study | Sewer | Planning, studies and asset management | $1M | 2025–2030 |
| 9 | Jacobs Avenue Sewer Imp. | Sewer | Sewer rehabilitation and I&I | $1M | 2028–2030 |
| 10 | Cross Town Interceptor Maintenance | Sewer | Force mains and interceptors | $1M | 2026–2028 |
7 more line items in Eureka, with descriptions and contacts
Klarifi holds every Eureka line item with its description, the page it appears on and the source document, plus 4 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
$39M
11 items
2026
$6M
3 items
2028
$4M
3 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 4 | $25M | 51% |
| Sewer | 6 | $10M | 20% |
| Water Supply | 2 | $2M | 5% |
| Water Distribution | 5 | $12M | 24% |
Project types in Eureka's plan
Wastewater treatment plants in Eureka
1 publicly owned treatment plant in Eureka with 24 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Eureka Wastewater Treatment Plant | 3.08 | CA0024449 | 24 |
Other California cities with capital plans
Eureka capital plan questions
Sources and methodology
Budgets and years are as published in Eureka’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 2025–2030 (17 line items).
Data refreshed September 11, 2026.