Delft Sanitary District WWTP
49627 County Road 3, Windom, MN 56101 · Cottonwood County · Publicly Owned Treatment Works
- Average flow
- 0.0021 MGD
- Design flow
- 0.006 MGD
- NPDES permit
- MN0066541
- Administratively continued
- Permit expires
- March 2026
- Population served
- —
- CWNS 2022
Delft Sanitary District WWTP is a publicly owned wastewater treatment works in Windom, Cottonwood County, Minnesota treating an average of 0.0021 million gallons per day against a permitted design capacity of 0.006 MGD. It discharges under NPDES permit MN0066541 (administratively continued), which expires in March 2026, with 4 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Delft Sanitary District WWTP.
Available with a free Klarifi account
See the full treatment train at Delft Sanitary District WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Windom
Windom's capital improvement plan lists 9 water, sewer and wastewater line items worth $560K starting 2025–2025. The largest budgeted items are shown here.
All water and sewer capital projects in Windom →
| Project | Budget | Years |
|---|---|---|
| General Equipment | $160,000 | 2025–2030 |
| Interceptor\Collection System Improvements | $80,000 | 2025–2030 |
| Filter Plant Improvements | $80,000 | 2025–2030 |
| Lift Station Improvements | $40,000 | 2025–2030 |
| General Plant Improvement\Maintence | $40,000 | 2025–2030 |
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 Delft Sanitary District WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Minnesota
Jeffers · 6 mi away
—
Mountain Lake · 8 mi away
—
Storden Township · 12 mi away
—
Comfrey · 13 mi away
0.02 MGD
Sanborn · 15 mi away
—
Butterfield · 15 mi away
0.2 MGD
Westbrook Township · 16 mi away
—
Lamberton Township · 18 mi away
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Delft Sanitary District WWTP: 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 October 26, 2026; facility record last updated July 12, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms