Mesa, Arizona: water and wastewater capital improvement projects
58 line items · $1.5B · starting 2027 · 1 plan
Mesa's published capital plans list 58 water, sewer and wastewater line items with a combined planning budget of $1.5B, of which 31 items worth $540M sit in the wastewater and sewer departments. The largest single item is Central Mesa Reuse Pipeline Project at $222M (2023–2029). 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 Mesa
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Central Mesa Reuse Pipeline Project | Water Distribution | Water mains and distribution | $222M | 2023–2029 |
| 2 | Signal Butte Water Treatment Plant Expansion | Water Supply | Wastewater treatment plant upgrades | $208M | 2023–2029 |
| 3 | Advanced Metering Infrastructure (AMI) | Water Supply | Meters and AMI | $97M | 2023–2028 |
| 4 | Northwest WRP Major Plant Improvements | Wastewater | Wastewater treatment plant upgrades | $86M | 2023–2029 |
| 5 | Sewer Line Replacement | Wastewater | Sewer rehabilitation and I&I | $75M | 2023–2029 |
| 6 | Val Vista Water Treatment Plant (Mesa Share) | Water Supply | Water treatment plants | $64M | 2023–2029 |
| 7 | 91st Avenue Water Reclamation Plant (Mesa Share) | Wastewater | Wastewater treatment plant upgrades | $63M | 2023–2029 |
| 8 | Water Line Replacement Program | Water Distribution | Water mains and distribution | $55M | 2023–2029 |
| 9 | GWRP Major Plant Improvements | Wastewater | Wastewater treatment plant upgrades | $51M | 2023–2029 |
| 10 | New Groundwater Wells | Water Supply | Wells and groundwater | $47M | 2023–2029 |
48 more line items in Mesa, with descriptions and contacts
Klarifi holds every Mesa 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
$1.5B
57 items
2027
$5M
1 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 29 | $526M | 36% |
| Sewer | 2 | $14M | 1% |
| Water Supply | 14 | $544M | 37% |
| Water Distribution | 13 | $386M | 26% |
Project types in Mesa's plan
Wastewater treatment plants in Mesa
1 publicly owned treatment plant in Mesa with 6 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Northwest Wrp | 2.72 | AZ0024031 | 6 |
Other Arizona cities with capital plans
Mesa capital plan questions
Sources and methodology
Budgets and years are as published in Mesa’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 2024–2029 (58 line items).
Data refreshed September 11, 2026.