Water treatment plant projects in US capital improvement plans
434 planned projects · $6.8B · 165 cities in 29 states
In short
How many water treatment plant projects are in US city capital plans?
Klarifi’s extraction of published capital improvement plans finds 434 water treatment plant projects in 165 cities across 29 states, with a combined budget of $6.8B. The largest is General Water Treatment Plant Replacement and Refurbishment in Nashville, TN, at $1.0B.
Drinking-water plant capacity, treatment and rehabilitation projects, including softening, filtration and residuals handling. The list below ranks the 10 largest by budget; every city links to its full capital plan page.
The largest water treatment plant projects
| # | Project | City | Budget | Years |
|---|---|---|---|---|
| 1 | General Water Treatment Plant Replacement and Refurbishment | Nashville, TN | $1.0B | 2025–2030 |
| 2 | NWTP Expansion and Reconstruction | Gilbert, AZ | $579M | 2025–2026 |
| 3 | Fourth Water Plant | Columbus, OH | $548M | 2025–2028 |
| 4 | Appomattox River Water Treatment Plant | Chesterfield, VA | $394M | 2026–2027 |
| 5 | WTP Minor Improvements | Fort Worth, TX | $223M | 2025–2029 |
| 6 | Fourth Water Plant Transmission Main | Columbus, OH | $218M | 2025–2029 |
| 7 | WTP: Plant 1 Replacement Project | Ann Arbor, MI | $142M | 2025–2031 |
| 8 | Improve Franklin WTP | Charlotte, NC | $118M | 2026–2030 |
| 9 | Reclaimed Water Production 100% CWWTP | Fort Myers, FL | $116M | 2025–2029 |
| 10 | Water Softening | Cottage Grove, MN | $100M | 2029 |
All 434 water treatment 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 water treatment plant projects
| City | Projects | Budget |
|---|---|---|
| Jacksonville, FL | 25 | $248M |
| Alpena, MI | 14 | $16M |
| Brooklyn, MI | 14 | $4M |
| Phoenix, AZ | 12 | $234M |
| Ann Arbor, MI | 11 | $162M |
| Winter Haven, FL | 11 | $41M |
| Myakka City, FL | 8 | $250M |
| Saginaw, MI | 8 | $21M |
| Brighton, MI | 8 | $414K |
| Texarkana, TX | 7 | $8M |
| Wichita, KS | 6 | $71M |
| Oklahoma City, OK | 6 | $30M |
States with the most water treatment plant projects
| State | Projects | Budget |
|---|---|---|
| Michigan | 90 | $249M |
| Florida | 71 | $835M |
| Texas | 33 | $624M |
| Colorado | 29 | $245M |
| California | 28 | $244M |
| Ohio | 21 | $918M |
| Arizona | 19 | $900M |
| New Hampshire | 16 | $14M |
| Virginia | 14 | $556M |
| Minnesota | 14 | $273M |
| North Carolina | 12 | $298M |
| Iowa | 10 | $12M |
Planned spend by start year
Before 2026
$4.7B
228 items
2026
$1.5B
91 items
2027
$196M
43 items
2028
$175M
30 items
2029
$261M
18 items
2030
$21M
7 items
2031
$7M
6 items
2032 and later
$3M
11 items
Other project types
Questions about water treatment plant projects
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 October 12, 2026.
Wastewater terms: Lift station · Inflow and infiltration · Sludge dewatering · WWTP · Filter press · FOG · all terms