Carbondale, Illinois: water and wastewater capital improvement projects
50 line items · $54M · starting 2026–2030 · 1 plan
Carbondale's published capital plans list 50 water, sewer and wastewater line items with a combined planning budget of $54M, of which 18 items worth $41M sit in the wastewater and sewer departments. The largest single item is NWWWTP Upgrade - 2.64 MGD to 4.2 MGD at $15M (2026). 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 Carbondale
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | NWWWTP Upgrade - 2.64 MGD to 4.2 MGD | Wastewater | — | $15M | 2026 |
| 2 | SEWWTP Upgrade - 6 MGD to 9 MGD (Oxidation Ditch Ring & Final Clarifier Addition) | Wastewater | Aeration and blowers | $15M | 2026 |
| 3 | NWWWTP Effuent Force Main Installation | Wastewater | Force mains and interceptors | $4M | 2026–2030 |
| 4 | Chautauqua Street Watermain Replacement | Water Distribution | Water mains and distribution | $2M | 2028–2030 |
| 5 | WTP On-Site Chlorine Generation System | Water Supply | Disinfection and UV | $2M | 2026–2029 |
| 6 | Sanitary Sewer Lining (CIPP) Program | Sewer | Sewer rehabilitation and I&I | $2M | 2026–2030 |
| 7 | NWWWTP Bar Screen Building | Wastewater | Headworks, screening and grit | $1M | 2030 |
| 8 | South Glenview Drive Watermain Replacement | Water Distribution | Water mains and distribution | $1M | 2025 |
| 9 | Lakeland Subdivision Sanitary Sewer | Sewer | Sewer rehabilitation and I&I | $1M | 2026 |
| 10 | North Oakland Avenue Watermain Replacement (Main to Willow - 3,400 ft) | Water Distribution | Water mains and distribution | $980K | 2027 |
40 more line items in Carbondale, with descriptions and contacts
Klarifi holds every Carbondale line item with its description, the page it appears on and the source document. Track new plans as they are adopted and compare with similar projects in other cities.
Planned spend by start year
Before 2026
$1M
4 items
2026
$45M
33 items
2027
$3M
7 items
2028
$3M
3 items
2030
$2M
3 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 12 | $38M | 70% |
| Sewer | 6 | $3M | 6% |
| Water Supply | 7 | $4M | 7% |
| Water Distribution | 25 | $9M | 17% |
Project types in Carbondale's plan
Wastewater treatment plants in Carbondale
No publicly owned treatment plant is recorded under Carbondale in the facility directory; the city may be served by a regional plant listed under another municipality. Browse all plants in Illinois.
Other Illinois cities with capital plans
Carbondale capital plan questions
Sources and methodology
Budgets and years are as published in Carbondale’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 2026–2030 (50 line items).
Data refreshed September 11, 2026.