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Grand River WWTP

Off County Road J20, West Of T, Grand River, IA 50108 · Decatur County · Publicly Owned Treatment Works

Average flow
—
Design flow
0.04 MGD
NPDES permit
IA0066346
Effective
Permit expires
April 2028
Population served
196
CWNS 2022

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.

Treatment technology

One treatment structure or unit process identified at Grand River WWTP.

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Compliance snapshot (last 3 years)

Total violations
56
Effluent violations
18

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

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.

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Nearby wastewater treatment plants in Iowa

Sun Valley Sanitary District Lagoon

Ellston · 6 mi away

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—

Kellerton City Of STP

Kellerton · 9 mi away

—

Van Wert WWTP

Van Wert · 9 mi away

—

Leon WWTP

Leon · 12 mi away

0.2 MGD

Weldon City Of STP

Weldon · 12 mi away

—

Lamoni WWTP

Lamoni · 14 mi away

0.42 MGD

Murray City Of STP

Murray · 15 mi away

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Grand River 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 April 23, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms


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