Wastewater treatment plant upgrades projects in US capital improvement plans
712 planned projects · $12.6B · 267 cities in 43 states
Plant-wide programs that are not tied to one process: capacity expansions, phased improvements, rehabilitation of buildings and structures, and the design contracts that precede them.
Klarifi's extraction of published capital improvement plans finds 712 wastewater plant projects in 267 cities with a combined planning budget of $12.6B, the largest being Water Resource Recovery Facility Improvements in Omaha, NE at $754M. The list below ranks the 25 largest by budget; every city links to its full capital plan page.
The largest wastewater plant projects
| # | Project | City | Budget | Years |
|---|---|---|---|---|
| 1 | Water Resource Recovery Facility Improvements | Omaha, NE | $754M | 2025–2030 |
| 2 | SWDE - Buckman Water Reclamation Facility Improvements | Jacksonville, FL | $366M | 2024–2028 |
| 3 | Wastewater Treatment Plant Improvements | Houston, TX | $354M | 2025 |
| 4 | Cave Creek Water Reclamation Plant Rehabilitation | Phoenix, AZ | $293M | 2024–2028 |
| 5 | Wastewater Treatment Plant Upgrades & Expansion Phase II | Rock Hill, SC | $288M | 2025–2029 |
| 6 | North Regional Water Reclamation Facility Expansion 12.5 MGD | Myakka City, FL | $255M | 2026–2030 |
| 7 | New Water Treatment Facility | Riviera Beach, FL | $250M | 2025–2029 |
| 8 | North WRF 8 MGD (Phase 1) Expandable to 17 MGD | Cape Coral, FL | $243M | 2025–2027 |
| 9 | Construct Stowe Regional Water Resource Recovery | Charlotte, NC | $242M | 2026–2028 |
| 10 | Blacks Ford Reclamation Facility - Expansion from 6 to 12 MGD | Jacksonville, FL | $211M | 2024–2028 |
| 11 | Signal Butte Water Treatment Plant Expansion | Mesa, AZ | $208M | 2023–2029 |
| 12 | Wastewater Plants | Chesterfield, VA | $200M | 2026–2029 |
| 13 | Wastewater Plant - Advanced Purification Facility (VWP) | Ventura, CA | $200M | 2025–2031 |
| 14 | Westside Solids Treatment Upgrades | Vancouver, WA | $180M | 2027–2030 |
| 15 | WWTP #3 Expansion | Winter Haven, FL | $180M | 2025–2029 |
| 16 | Dry Creek Wastewater Treatment Plant | Nashville, TN | $172M | 2025 |
| 17 | WWTP Facility Plan Improvements | Sioux City, IA | $170M | 2027–2028 |
| 18 | Wastewater Treatment Plant Consolidation | Houston, TX | $167M | 2025 |
| 19 | Southwest Water Reclamation Facility Expansion to 18 MGD | Myakka City, FL | $165M | 2025–2028 |
| 20 | T.Z. Osborne Wastewater Treatment Plant – Treatment of Emerging Contaminants | Greensboro, NC | $162M | 2030–2035 |
| 21 | SWDE - Southwest Water Reclamation Facility - Purification Facility | Jacksonville, FL | $154M | 2024–2028 |
| 22 | Conserv I Treatment Plant Improvements | Orlando, FL | $147M | 2025–2028 |
| 23 | Kailua WWTP - System Improvements | Honolulu, HI | $140M | 2025–2027 |
| 24 | Wastewater Treatment | Richmond, VA | $139M | 2025–2029 |
| 25 | South Laredo WWTP exp to 24 mgd | Laredo, TX | $138M | 2027–2028 |
All 712 wastewater plant projects, with descriptions and contacts
Every line item with its description, page reference and source document, filterable by state, budget and start year, linked to the treatment plants and decision-makers in each city, and refreshed as new plans are adopted.
Cities with the most wastewater plant projects
| City | Projects | Budget |
|---|---|---|
| Phoenix, AZ | 36 | $1.1B |
| Jacksonville, FL | 19 | $1.2B |
| Honolulu, HI | 16 | $482M |
| Mesa, AZ | 15 | $507M |
| Saginaw, MI | 13 | $5M |
| Corpus Christi, TX | 11 | $248M |
| Henderson, NV | 11 | $53M |
| Brighton, MI | 11 | $2M |
| Keene, NH | 10 | $9M |
| Burlington, IA | 10 | $5M |
| Lincoln, NE | 9 | $13M |
| Fort Lauderdale, FL | 8 | $49M |
States with the most wastewater plant projects
| State | Projects | Budget |
|---|---|---|
| Michigan | 85 | $169M |
| Florida | 68 | $2.8B |
| Arizona | 64 | $1.9B |
| California | 58 | $434M |
| Texas | 52 | $1.5B |
| New Hampshire | 32 | $139M |
| Missouri | 27 | $129M |
| Washington | 26 | $270M |
| Iowa | 25 | $306M |
| Illinois | 24 | $102M |
| Virginia | 23 | $575M |
| Minnesota | 19 | $92M |
Planned spend by start year
Before 2026
$9.1B
414 items
2026
$1.8B
141 items
2027
$982M
62 items
2028
$168M
35 items
2029
$207M
22 items
2030
$189M
20 items
2031
$103M
6 items
2032 and later
$70M
12 items
Other project types
Wastewater treatment plant upgrades project questions
Sources and methodology
Budgets and years are as published in each city’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.
Data refreshed September 11, 2026.