What is the address of Maple River Junction WWTP?

The address on the plant’s EPA facility record is Ivy Ave, Carroll, IA 51401, in Carroll County. Its coordinates are 42.0994, -94.9378. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Maple River Junction WWTP treat?

Maple River Junction WWTP treats an average of 0.0071 MGD and is permitted for a design flow of 0.03 MGD.

What is the NPDES permit for Maple River Junction WWTP?

The facility discharges under NPDES permit IA0081639, currently administratively continued, expiring July 2026.

Is Maple River Junction WWTP in compliance?

Discharge monitoring reports show 14 violations at Maple River Junction WWTP in the last three years, 14 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Maple River Junction WWTP and how do I contact them?

Maple River Junction WWTP is a publicly owned treatment works in Carroll, Iowa. Klarifi lists 13 verified decision-maker contacts for this facility, available with a free trial.

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Maple River Junction WWTP

Ivy Ave, Carroll, IA 51401 · Carroll County · Publicly Owned Treatment Works

Average flow: 0.0071 MGD

Design flow: 0.03 MGD

NPDES permit: IA0081639; Administratively continued

Permit expires: July 2026

Population served: —; CWNS 2022

Maple River Junction WWTP is a publicly owned wastewater treatment works in Carroll, Carroll County, Iowa treating an average of 0.0071 million gallons per day against a permitted design capacity of 0.03 MGD. It discharges under NPDES permit IA0081639 (administratively continued), which expires in July 2026, with 14 recorded violations in the last three years.

Treatment technology

Treatment structures and unit processes at Maple River Junction WWTP.

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 14

Effluent violations: 14

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

Key contacts

13 verified contacts for Maple River Junction WWTP, with validated emails and direct phone numbers.

Unlock 13 verified contacts (10 more than shown)

Names, validated emails and direct phone numbers for decision-makers at Maple River Junction WWTP, plus the full compliance history and discharge data.

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Maple River Junction 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 28, 2025.

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

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