How much wastewater does Cylinder City Of STP treat?

Cylinder City Of STP is permitted for a design flow of 0.04 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Cylinder City Of STP use?

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

What is the NPDES permit for Cylinder City Of STP?

The facility discharges under NPDES permit IA0064823, currently effective, expiring July 2029.

Is Cylinder City Of STP in compliance?

Discharge monitoring reports show 32 violations at Cylinder City Of STP in the last three years, 11 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Cylinder City Of STP and how do I contact them?

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

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Cylinder City Of STP

Cylinder, IA 50528 · Palo Alto County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.04 MGD

NPDES permit: IA0064823; Effective

Permit expires: July 2029

Population served: 87; CWNS 2022

Cylinder City Of STP is a publicly owned wastewater treatment works in Cylinder, Palo Alto County, Iowa, serving about 87 residents. It discharges under NPDES permit IA0064823 (effective), which expires in July 2029, with 32 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Cylinder City Of STP.

Available with a free Klarifi account

See the full treatment train at Cylinder City Of STP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 32

Effluent violations: 11

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

Key contacts

1 verified contact for Cylinder City Of STP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Cylinder City Of STP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

City Of Emmetsburg Treatment Plant

Emmetsburg · 7 mi away

2.38 MGD

Fenton City Of STP

Fenton · 11 mi away

—

West Bend City Of STP

West Bend · 11 mi away

0.1 MGD

Mallard City Of STP

Mallard · 12 mi away

—

Graettinger City Of STP

Graettinger · 13 mi away

—

Ayrshire, City Of STP

Ayrshire · 14 mi away

—

Lone Rock, City Of STP

Lone Rock · 15 mi away

—

Algona City Of STP

Algona · 16 mi away

0.72 MGD

Cylinder City Of STP: 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 · Biological nutrient removal · Tertiary treatment · all terms

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