Water main and distribution projects in US capital improvement plans
3,064 planned projects · $17.6B · 423 cities in 44 states
In short
How many water main projects are in US city capital plans?
Klarifi’s extraction of published capital improvement plans finds 3,064 water main projects in 423 cities across 44 states, with a combined budget of $17.6B. The largest is Water Distribution Projects in Nashville, TN, at $667M.
Water main replacement and extension, transmission mains, valves, hydrants and distribution-system programs, the largest line-item category by count in most water utility budgets. The list below ranks the 10 largest by budget; every city links to its full capital plan page.
The largest water main projects
| # | Project | City | Budget | Years |
|---|---|---|---|---|
| 1 | Water Distribution Projects | Nashville, TN | $667M | 2025–2030 |
| 2 | Major Mains Bucket | Fort Worth, TX | $452M | 2025–2029 |
| 3 | Bull Run Pipelines | Portland, OR | $302M | 2025–2029 |
| 4 | Future Water Main Replacement | Baltimore, MD | $280M | 2027–2031 |
| 5 | ACP Water Line Replacements | Gilbert, AZ | $274M | 2027–2034 |
| 6 | Central Mesa Reuse Pipeline Project | Mesa, AZ | $222M | 2023–2029 |
| 7 | Watermain Rehabilitation | Seattle, WA | $210M | 2025–2030 |
| 8 | Baltimore St./Smallwood St./Reisterstown Rd. Area Water Main Replacements | Baltimore, MD | $200M | 2026–2030 |
| 9 | Bull Run Pipelines | Portland, OR | $179M | 2024–2027 |
| 10 | Raw Water 2nd Atoka Pipeline - Lake Atoka to Lake Stanley Draper (Citywide) | Oklahoma City, OK | $175M | 2026 |
All 3,064 water main 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 main projects
| City | Projects | Budget |
|---|---|---|
| Phoenix, AZ | 109 | $913M |
| Ann Arbor, MI | 68 | $169M |
| Mason, MI | 64 | $9M |
| Portland, OR | 53 | $840M |
| Kalamazoo, MI | 53 | $165M |
| Myakka City, FL | 51 | $324M |
| Spokane, WA | 48 | $61M |
| Baltimore, MD | 44 | $986M |
| Gilbert, AZ | 36 | $630M |
| Greensboro, NC | 36 | $331M |
| Juneau, AK | 33 | $86M |
| Fort Lauderdale, FL | 30 | $83M |
States with the most water main projects
| State | Projects | Budget |
|---|---|---|
| Michigan | 690 | $1.0B |
| Florida | 204 | $1.3B |
| Washington | 196 | $1.2B |
| California | 191 | $1.0B |
| Arizona | 160 | $2.0B |
| Texas | 149 | $2.1B |
| Oregon | 143 | $998M |
| Ohio | 124 | $263M |
| Illinois | 120 | $399M |
| Colorado | 90 | $344M |
| North Carolina | 88 | $640M |
| Minnesota | 79 | $206M |
Planned spend by start year
Before 2026
$11.1B
1,354 items
2026
$3.0B
616 items
2027
$1.6B
394 items
2028
$669M
259 items
2029
$664M
243 items
2030
$428M
116 items
2031
$64M
38 items
2032 and later
$155M
43 items
Unscheduled
$8M
1 items
Other project types
Questions about water main 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.
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