Iowa Great Lakes Sanitary District WWTP
303 28th St, Milford, IA 51351 · Dickinson County · Publicly Owned Treatment Works
- Average flow
- 2.5 MGD
- Design flow
- 10.26 MGD
- NPDES permit
- IA0059765
- Administratively continued
- Permit expires
- August 2026
- Population served
- 27,201
- CWNS 2022
Iowa Great Lakes Sanitary District WWTP is a publicly owned wastewater treatment works in Milford, Dickinson County, Iowa treating an average of 2.5 million gallons per day against a permitted design capacity of 10.26 MGD, serving about 27,201 residents. It discharges under NPDES permit IA0059765 (administratively continued), which expires in August 2026, with 15 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Iowa Great Lakes Sanitary District WWTP.
Available with a free Klarifi account
See the full treatment train at Iowa Great Lakes Sanitary District WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 15
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Iowa Great Lakes Sanitary District WWTP.
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Nearby wastewater treatment plants in Iowa
Fostoria · 8 mi away
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Terril · 10 mi away
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Lake Park · 12 mi away
0.12 MGD
Spencer · 14 mi away
1.75 MGD
Everly · 15 mi away
0.08 MGD
Estherville · 16 mi away
1.05 MGD
Harris · 17 mi away
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Wallingford · 18 mi away
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Iowa Great Lakes 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 March 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms