Watsonville, California: water and wastewater capital improvement projects
30 line items · $154M · starting 2026–2029 · 1 plan
Watsonville's published capital plans list 30 water, sewer and wastewater line items with a combined planning budget of $154M, of which 14 items worth $83M sit in the wastewater and sewer departments. The largest single item is Chromium 6 Treatment Plants at $47M (2025–2029). 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 Watsonville
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Chromium 6 Treatment Plants | Water Supply | — | $47M | 2025–2029 |
| 2 | Replace Headworks Diversion | Wastewater | Headworks, screening and grit | $37M | 2026–2030 |
| 3 | RW Switchgear, Standby Generator | Wastewater | Generators, power and electrical | $17M | 2027–2030 |
| 4 | Main Switchgear and Energy Recovery Electrical System Improvements | Wastewater | Water mains and distribution | $13M | 2025–2027 |
| 5 | Water Main Replacement Material and Equipment Costs | Water Distribution | Water mains and distribution | $8M | 2025–2030 |
| 6 | Additional(0.5 miles/year) Water Main Replacement | Water Distribution | Water mains and distribution | $6M | 2025–2029 |
| 7 | Sewer Pump Station Improvements - Pajaro Dunes | Wastewater | Pump stations | $5M | 2027–2029 |
| 8 | Sub Basin 7 Sanitary Sewer Infrastructure Repairs Martinelli to Beach | Wastewater | Sewer rehabilitation and I&I | $3M | 2026–2028 |
| 9 | Water Meter Replacement | Water Distribution | Meters and AMI | $2M | 2025–2030 |
| 10 | Airport, Hames, Amesti, and Rider Tank Coating Projects | Water Distribution | Storage tanks and reservoirs | $2M | 2025–2027 |
20 more line items in Watsonville, with descriptions and contacts
Klarifi holds every Watsonville line item with its description, the page it appears on and the source document, plus 3 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
$88M
22 items
2026
$40M
2 items
2027
$25M
5 items
2029
$885K
1 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 13 | $82M | 53% |
| Sewer | 1 | $500K | 0% |
| Water Supply | 8 | $51M | 33% |
| Water Distribution | 8 | $20M | 13% |
Project types in Watsonville's plan
Wastewater treatment plants in Watsonville
1 publicly owned treatment plant in Watsonville with 8 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Watsonville WWTF | 5.21 | CA0048216 | 8 |
Other California cities with capital plans
Watsonville capital plan questions
Sources and methodology
Budgets and years are as published in Watsonville’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 (30 line items).
Data refreshed September 11, 2026.