Storage tanks and reservoirs projects in US capital improvement plans
639 planned projects · $2.3B · 273 cities in 38 states
Elevated and ground storage tanks, standpipes, reservoirs and clearwells: painting and recoating, structural rehabilitation, mixing and new capacity.
Klarifi's extraction of published capital improvement plans finds 639 storage projects in 273 cities with a combined planning budget of $2.3B, the largest being Upground Reservoir - Site 3 in Columbus, OH at $100M. The list below ranks the 25 largest by budget; every city links to its full capital plan page.
The largest storage projects
| # | Project | City | Budget | Years |
|---|---|---|---|---|
| 1 | Upground Reservoir - Site 3 | Columbus, OH | $100M | 2029 |
| 2 | Reservoir Covering-Bitter Lake | Seattle, WA | $86M | 2025–2030 |
| 3 | Elevated Water Storage Tanks - City-Wide | Corpus Christi, TX | $65M | 2025–2031 |
| 4 | Concrete Reservoir Rehabilitation | Phoenix, AZ | $50M | 2024–2029 |
| 5 | Dam Safety | Seattle, WA | $49M | 2025–2030 |
| 6 | Intentionally Created Storage | Phoenix, AZ | $43M | 2028–2029 |
| 7 | Design replace the influent System including tanks etc. | Rockland, MA | $40M | 2028 |
| 8 | NWTP FWPS and Reservoir Replacement | Gilbert, AZ | $40M | 2030–2034 |
| 9 | Upground Reservoir | Delaware, OH | $39M | 2026–2029 |
| 10 | Water Tanks | Chesterfield, VA | $39M | 2026–2030 |
| 11 | 6b-Es1 (5 Million Gallons) Reservoir | Phoenix, AZ | $37M | 2024–2025 |
| 12 | Watershed Comprehensive Plan - Liberty and Loch Raven Reservoirs | Baltimore, MD | $37M | 2025–2028 |
| 13 | Tank Improvements | Seattle, WA | $32M | 2025–2030 |
| 14 | Reservoir Rehabilitation Program | Sacramento, CA | $31M | 2025–2030 |
| 15 | Watershed Bridge Maintenance | Baltimore, MD | $30M | 2025–2029 |
| 16 | Site 34 Well and Reservoir | Gilbert, AZ | $30M | 2025–2029 |
| 17 | R-43 Reservoir - Construction | Henderson, NV | $26M | 2032 |
| 18 | Steel Tank Rehabilitation | Phoenix, AZ | $25M | 2024–2029 |
| 19 | Union Hills Reservoir Rehabilitation | Phoenix, AZ | $24M | 2024–2027 |
| 20 | Reservoirs | Nashville, TN | $24M | 2025–2030 |
| 21 | 5ed-Nes1 Reservoir (5 Million Gallons) | Phoenix, AZ | $24M | 2024–2027 |
| 22 | Reservoir Program | Santa Barbara, CA | $23M | 2025–2031 |
| 23 | Elevated Storage Tank | Saginaw, MI | $21M | 2025–2026 |
| 24 | ONSWTP Clearwell No. 4 | Corpus Christi, TX | $20M | 2033 |
| 25 | Elevated Storage Tank | Arlington, TX | $20M | 2025–2028 |
All 639 storage 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 storage projects
| City | Projects | Budget |
|---|---|---|
| Henderson, NV | 30 | $85M |
| Simi Valley, CA | 13 | $14M |
| Greensboro, NC | 12 | $5M |
| Killona, LA | 11 | $501K |
| Juneau, AK | 10 | $24M |
| Spokane, WA | 10 | $21M |
| Phoenix, AZ | 9 | $207M |
| Columbus, OH | 9 | $157M |
| Baltimore, MD | 9 | $118M |
| Gilbert, AZ | 9 | $101M |
| Alpena, MI | 8 | $333K |
| Portland, OR | 7 | $29M |
States with the most storage projects
| State | Projects | Budget |
|---|---|---|
| Michigan | 89 | $74M |
| California | 49 | $174M |
| Washington | 48 | $279M |
| Nevada | 31 | $86M |
| Ohio | 29 | $207M |
| Oregon | 29 | $97M |
| North Carolina | 29 | $76M |
| Texas | 27 | $177M |
| Florida | 27 | $99M |
| Colorado | 25 | $64M |
| Virginia | 24 | $79M |
| Arizona | 22 | $330M |
Planned spend by start year
Before 2026
$1.2B
263 items
2026
$365M
150 items
2027
$166M
71 items
2028
$218M
55 items
2029
$145M
35 items
2030
$109M
26 items
2031
$13M
7 items
2032 and later
$115M
30 items
Unscheduled
$7M
2 items
Other project types
Storage tanks and reservoirs 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.