What is the address of Manly WWTP?

The address on the plant’s EPA facility record is 1671 Hwy 9 East, Manly, IA 50456, in Worth County. Its coordinates are 43.2790, -93.1875. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Manly WWTP treat?

Manly WWTP treats an average of 0.27 MGD.

What treatment technology does Manly WWTP use?

Klarifi has identified one treatment structure or unit process at the Manly facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Manly WWTP?

The facility discharges under NPDES permit IA0047830, currently effective, expiring September 2030.

Is Manly WWTP in compliance?

Discharge monitoring reports show 2 violations at Manly WWTP in the last three years, 2 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Manly WWTP and how do I contact them?

Manly WWTP is a publicly owned treatment works in Manly, Iowa. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Manly WWTP

1671 Hwy 9 East, Manly, IA 50456 · Worth County · Publicly Owned Treatment Works

Average flow: 0.27 MGD

Design flow: —

NPDES permit: IA0047830; Effective

Permit expires: September 2030

Population served: 1,256; CWNS 2022

Manly WWTP is a publicly owned wastewater treatment works in Manly, Worth County, Iowa treating an average of 0.27 million gallons per day, serving about 1,256 residents. It discharges under NPDES permit IA0047830 (effective), which expires in September 2030, with 2 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Manly WWTP.

Available with a free Klarifi account

See the full treatment train at Manly WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 2

Effluent violations: 2

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

Key contacts

1 verified contact for Manly WWTP, with validated emails and direct phone numbers.

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

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Plymouth City Of STP

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Kensett, City Of-STP

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Grafton City Of STP

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Rock Falls WWTP

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Mason WWTP

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Northwood City Of STP

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Fertile City Of STP

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Nora Springs City Of STP

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Manly 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 · Biosolids · Filter press · all terms

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