Kennewick, Washington: water and wastewater capital improvement projects
36 line items · $94M · starting 2026–2030 · 1 plan
Kennewick's published capital plans list 36 water, sewer and wastewater line items with a combined planning budget of $94M, of which 20 items worth $29M sit in the wastewater and sewer departments. The largest single item is PFAS Treatment Sys. @ Ranney Collector 5 at $35M (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 Kennewick
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | PFAS Treatment Sys. @ Ranney Collector 5 | Water Supply | PFAS treatment | $35M | 2025–2029 |
| 2 | Clearwater Ave Interceptor Phase 1 | Sewer | Force mains and interceptors | $14M | 2028–2029 |
| 3 | Zone 1 Transmission Main Phase 2 | Water Distribution | Water mains and distribution | $4M | 2026–2027 |
| 4 | Zone 1 Transmission Main Phase 1 | Water Distribution | Water mains and distribution | $4M | 2025–2026 |
| 5 | Zone 1 Transmission Main Phase 3 | Water Distribution | Water mains and distribution | $4M | 2027–2028 |
| 6 | Zone 1 Transmission Main Phase 4 | Water Distribution | Water mains and distribution | $4M | 2028–2029 |
| 7 | Fire Flow Deficiencies | Water Supply | Water mains and distribution | $3M | 2025–2030 |
| 8 | SCADA & PLC Upgrades | Sewer | SCADA, controls and instrumentation | $3M | 2025–2027 |
| 9 | Sewerline Renewals and Replacements | Sewer | Sewer rehabilitation and I&I | $3M | 2025–2030 |
| 10 | Zone 4 East Transmission Main | Water Distribution | Water mains and distribution | $2M | 2029–2030 |
26 more line items in Kennewick, with descriptions and contacts
Klarifi holds every Kennewick line item with its description, the page it appears on and the source document. Track new plans as they are adopted and compare with similar projects in other cities.
Planned spend by start year
Before 2026
$57M
20 items
2026
$6M
5 items
2027
$4M
2 items
2028
$20M
3 items
2029
$5M
4 items
2030
$2M
2 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Sewer | 20 | $29M | 31% |
| Water Supply | 5 | $39M | 42% |
| Water Distribution | 11 | $26M | 27% |
Project types in Kennewick's plan
Wastewater treatment plants in Kennewick
No publicly owned treatment plant is recorded under Kennewick in the facility directory; the city may be served by a regional plant listed under another municipality. Browse all plants in Washington.
Other Washington cities with capital plans
Kennewick capital plan questions
Sources and methodology
Budgets and years are as published in Kennewick’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 (36 line items).
Data refreshed September 11, 2026.