Watertown, City Of
Watertown, SD · Codington County · Publicly Owned Treatment Works
- Average flow
- 5.27 MGD
- Design flow
- —
- NPDES permit
- SD0028614
- Terminated
- Permit expires
- June 2018
- Population served
- 25,026
- CWNS 2022
Watertown, City Of is a publicly owned wastewater treatment plant in Watertown, Codington County, South Dakota treating an average of 5.27 million gallons per day, serving about 25,026 residents. It discharges under NPDES permit SD0028614 (terminated), which expires in June 2018, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Watertown
Watertown's capital improvement plan lists 77 water, sewer and wastewater line items worth $10M starting 2025–2036. The largest budgeted items are shown here.
All water and sewer capital projects in Watertown →
| Project | Budget | Years |
|---|---|---|
| Sewer Replacement & Rehab | $3,960,000 | 2025–2036 |
| Replace UV Disinfection System | $1,627,000 | 2030–2030 |
| Digester Rehabilitation | $1,478,000 | 2027–2027 |
| Replace Camel Jetter Truck | $506,000 | 2028–2028 |
| Replace 10 kWA 100DF4 Generator | $231,000 | 2026–2032 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Watertown, City Of.
No verified contacts on file yet
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Nearby wastewater treatment plants in South Dakota
Clear Lake · 24 mi away
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Labolt · 24 mi away
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Estelline · 25 mi away
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Bryant · 28 mi away
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Toronto · 33 mi away
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Gary · 35 mi away
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Arlington · 37 mi away
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Wilmot · 38 mi away
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Watertown, City Of: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated December 22, 2024.