Nashville, Tennessee: water and wastewater capital improvement projects
36 line items · $4.0B · starting 2028–2030 · 1 plan
Nashville's published capital plans list 36 water, sewer and wastewater line items with a combined planning budget of $4.0B, of which 31 items worth $3.2B sit in the wastewater and sewer departments. The largest single item is General Water Treatment Plant Replacement and Refurbishment at $1.0B (2025–2030). 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 Nashville
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | General Water Treatment Plant Replacement and Refurbishment | Wastewater | Water treatment plants | $1.0B | 2025–2030 |
| 2 | Clean Water Nashville | Sewer | — | $750M | 2025–2030 |
| 3 | Water Distribution Projects | Water Distribution | Water mains and distribution | $667M | 2025–2030 |
| 4 | Biosolids and Odor Control | Wastewater | Biosolids, sludge and dewatering | $441M | 2025–2030 |
| 5 | Dry Creek Wastewater Treatment Plant | Wastewater | Wastewater treatment plant upgrades | $172M | 2025 |
| 6 | Combined System Projects Related to Downstream Policy | Wastewater | — | $150M | 2025–2030 |
| 7 | Stormwater Master Planning Construction Projects | Sewer | Stormwater and flood resilience | $90M | 2028–2030 |
| 8 | Stormwater - Capital Construction / Remedial Maintenance in | Water Distribution | Stormwater and flood resilience | $86M | 2025–2030 |
| 9 | Central Wastewater Treatment Plant | Wastewater | Wastewater treatment plant upgrades | $84M | 2025–2030 |
| 10 | Customer Care Center | Wastewater | — | $50M | 2030 |
26 more line items in Nashville, with descriptions and contacts
Klarifi holds every Nashville 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
$3.9B
34 items
2028
$90M
1 items
2030
$50M
1 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 22 | $2.2B | 56% |
| Sewer | 9 | $993M | 25% |
| Water Supply | 1 | $24M | 1% |
| Water Distribution | 4 | $766M | 19% |
Project types in Nashville's plan
Wastewater treatment plants in Nashville
4 publicly owned treatment plants in Nashville with 108 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Metro Central Wastewater Treatment Plant | 88.2 | TNL020575 | 62 |
| Whites Creek Wastewater Treatment Plant | 21.51 | TN0024970 | 39 |
| Harpeth Valley Utility District STP | 4.76 | TN0074748 | 4 |
| Nashville J.P.Priest Lake Hamilton Creek Recreation Area | 0.0015 | TN0028550 | 3 |
Other Tennessee cities with capital plans
Nashville capital plan questions
Sources and methodology
Budgets and years are as published in Nashville’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.