Olympia, Washington: water and wastewater capital improvement projects
80 line items · $99M · starting 2026–2031 · 1 plan
Olympia's published capital plans list 80 water, sewer and wastewater line items with a combined planning budget of $99M, of which 38 items worth $51M sit in the wastewater and sewer departments. The largest single item is East Elevated Storage at $8M (2028–2029). 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 Olympia
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | East Elevated Storage | Water Supply | Storage tanks and reservoirs | $8M | 2028–2029 |
| 2 | 9610 Eastside (Tank) Reservoir Rehabilitation Construction | Water Supply | Storage tanks and reservoirs | $7M | 2026–2028 |
| 3 | Percival Creek Sewer Replacement | Sewer | Sewer rehabilitation and I&I | $7M | 2027–2028 |
| 4 | 9609 Asbestos Cement (AC) and Again Pipe Replacement | Water Supply | Water mains and distribution | $5M | 2026–2030 |
| 5 | Aging Infrastructure Rehabilitation | Sewer | Sewer rehabilitation and I&I | $4M | 2025–2030 |
| 6 | Old Port 1 lift Station | Sewer | Lift stations | $4M | 2025 |
| 7 | 9609 Fones Road Water Main Construction | Water Distribution | Water mains and distribution | $4M | 2025 |
| 8 | Aeration Equipment Improvements | Wastewater | Aeration and blowers | $3M | 2026–2029 |
| 9 | Collector Well #1 Reconstruction | Water Supply | Wells and groundwater | $3M | 2025–2026 |
| 10 | Wastewater Digester Gas Improvements | Wastewater | Anaerobic digesters and biogas | $3M | 2025 |
70 more line items in Olympia, with descriptions and contacts
Klarifi holds every Olympia line item with its description, the page it appears on and the source document, plus 2 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
$42M
45 items
2026
$27M
14 items
2027
$15M
9 items
2028
$10M
6 items
2029
$3M
4 items
2030
$250K
1 items
2031
$3M
1 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 11 | $13M | 13% |
| Sewer | 27 | $38M | 39% |
| Water Supply | 30 | $34M | 35% |
| Water Distribution | 12 | $14M | 14% |
Project types in Olympia's plan
Wastewater treatment plants in Olympia
1 publicly owned treatment plant in Olympia. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Lott Wastewater Treatment Plant | — | WAG994545 | 0 |
Other Washington cities with capital plans
Olympia capital plan questions
Sources and methodology
Budgets and years are as published in Olympia’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 (80 line items).
Data refreshed September 11, 2026.