Monroe, Washington: water and wastewater capital improvement projects
51 line items · $101M · starting 2026–2030 · 1 plan
Monroe's published capital plans list 51 water, sewer and wastewater line items with a combined planning budget of $101M, of which 20 items worth $72M sit in the wastewater and sewer departments. The largest single item is Biosolids Treatment Project (CIP 5) at $29M (2025–2026). 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 Monroe
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Biosolids Treatment Project (CIP 5) | Wastewater | Biosolids, sludge and dewatering | $29M | 2025–2026 |
| 2 | CIP 3 Membrane Enhanced Trtmnt | Wastewater | Membranes and filtration | $18M | 2029–2030 |
| 3 | Valley View Pump Station Upgrades | Sewer | Pump stations | $6M | 2026–2027 |
| 4 | Fryelands PS and FM Upgrades | Sewer | — | $5M | 2029–2030 |
| 5 | Trombley Hill from Reservoir to Airport/179th SE | Water Distribution | Storage tanks and reservoirs | $4M | 2025–2026 |
| 6 | North Hill 116th SE and 227th SE; connect to Wagner 517; Install PRVs | Water Distribution | — | $3M | 2028–2029 |
| 7 | Woods Creek Road - Tjerne to Ingraham Rd | Water Distribution | Water mains and distribution | $2M | 2028–2029 |
| 8 | Old Owen PS Upgrades | Sewer | — | $2M | 2029–2030 |
| 9 | Lord Hill PS - Equipment Replacement | Water Distribution | Vehicles and equipment | $2M | 2028 |
| 10 | Tester Rd PS - Equipment Replacement | Water Distribution | Vehicles and equipment | $2M | 2027 |
41 more line items in Monroe, with descriptions and contacts
Klarifi holds every Monroe 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
$41M
18 items
2026
$9M
6 items
2027
$6M
5 items
2028
$14M
10 items
2029
$28M
7 items
2030
$3M
5 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 9 | $51M | 50% |
| Sewer | 11 | $21M | 21% |
| Water Supply | 5 | $3M | 3% |
| Water Distribution | 26 | $26M | 26% |
Project types in Monroe's plan
Wastewater treatment plants in Monroe
No publicly owned treatment plant is recorded under Monroe 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
Monroe capital plan questions
Sources and methodology
Budgets and years are as published in Monroe’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 (51 line items).
Data refreshed September 11, 2026.