Watertown, South Dakota: water and wastewater capital improvement projects
77 line items · $10M · starting 2026–2031 · 1 plan
Watertown's published capital plans list 77 water, sewer and wastewater line items with a combined planning budget of $10M, of which 77 items worth $10M sit in the wastewater and sewer departments. The largest single item is Sewer Replacement & Rehab at $4M (2025–2036). 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 Watertown
| # | Project | Department | Type | Budget | Years |
|---|---|---|---|---|---|
| 1 | Sewer Replacement & Rehab | Sewer | Sewer rehabilitation and I&I | $4M | 2025–2036 |
| 2 | Replace UV Disinfection System | Wastewater | Disinfection and UV | $2M | 2030 |
| 3 | Digester Rehabilitation | Wastewater | Anaerobic digesters and biogas | $1M | 2027 |
| 4 | Replace Camel Jetter Truck | Wastewater | Vehicles and equipment | $506K | 2028 |
| 5 | Replace 10 kWA 100DF4 Generator | Wastewater | Generators, power and electrical | $231K | 2026–2032 |
| 6 | Replace Tractor & Boom Mower-JD 6420 | Wastewater | Vehicles and equipment | $164K | 2028 |
| 7 | Replace F550 Truck/Utility Box & Crane | Wastewater | Vehicles and equipment | $163K | 2032 |
| 8 | Replace Ford F250 Pickup | Wastewater | Vehicles and equipment | $150K | 2029–2033 |
| 9 | Replace Backhoe-2021 JD 310SL | Wastewater | Vehicles and equipment | $145K | 2036 |
| 10 | Replace Pump, 6" Godwin on Trailer | Wastewater | Pump stations | $117K | 2029–2032 |
67 more line items in Watertown, with descriptions and contacts
Klarifi holds every Watertown 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
$4M
13 items
2026
$388K
7 items
2027
$2M
22 items
2028
$838K
12 items
2029
$331K
6 items
2030
$2M
2 items
2031
$24K
3 items
2032 and later
$458K
12 items
By department
| Department | Line items | Budget | Share |
|---|---|---|---|
| Wastewater | 74 | $6M | 58% |
| Sewer | 3 | $4M | 42% |
Project types in Watertown's plan
Wastewater treatment plants in Watertown
1 publicly owned treatment plant in Watertown with 1 permit violations in the last three years. Each profile shows flow, permit, technology and compliance data.
| Plant | Avg flow (MGD) | NPDES | Violations (3y) |
|---|---|---|---|
| Watertown, City Of | 5.27 | SD0028614 | 1 |
Other South Dakota cities with capital plans
Watertown capital plan questions
Sources and methodology
Budgets and years are as published in Watertown’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 2025–2036 (77 line items).
Data refreshed September 11, 2026.