Off County Road J20, West Of T, Grand River, IA 50108 · Decatur County · Publicly Owned Treatment Works
Grand River WWTP is a publicly owned wastewater treatment works in Grand River, Decatur County, Iowa, serving about 196 residents. It discharges under NPDES permit IA0066346 (effective), which expires in April 2028, with 56 recorded violations in the last three years.
One treatment structure or unit process identified at Grand River WWTP.
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See the full treatment train at Grand River WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
1 verified contact for Grand River WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Grand River WWTP, plus the full compliance history and discharge data.
Ellston · 6 mi away
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Decatur · 9 mi away
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Kellerton · 9 mi away
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Van Wert · 9 mi away
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Leon · 12 mi away
0.2 MGD
Weldon · 12 mi away
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Lamoni · 14 mi away
0.42 MGD
Murray · 15 mi away
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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 April 23, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms