Shellsburg WWTP
SE Homer St, Shellsburg, IA 52332 · Benton County · Publicly Owned Treatment Works
- Average flow
- 0.32 MGD
- Design flow
- 1.15 MGD
- NPDES permit
- IA0033332
- Administratively continued
- Permit expires
- May 2006
- Population served
- 1,100
- CWNS 2022
Shellsburg WWTP is a publicly owned wastewater treatment works in Shellsburg, Benton County, Iowa treating an average of 0.32 million gallons per day against a permitted design capacity of 1.15 MGD, serving about 1,100 residents. It discharges under NPDES permit IA0033332 (administratively continued), which expires in May 2006, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Shellsburg WWTP.
Available with a free Klarifi account
See the full treatment train at Shellsburg WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Shellsburg WWTP.
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Nearby wastewater treatment plants in Iowa
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0.25 MGD
Center Point · 8 mi away
0.3 MGD
Urbana · 9 mi away
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Newhall · 9 mi away
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Vinton · 10 mi away
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Fairfax · 13 mi away
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Norway · 13 mi away
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Van Horne · 13 mi away
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Shellsburg 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 September 10, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms