What is the address of Mount Vernon City Of STP?

The address on the plant’s EPA facility record is 103 Country Club Drive, Mount Vernon, IA 52314, in Linn County. Its coordinates are 41.9160, -91.4095. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Mount Vernon City Of STP treat?

Mount Vernon City Of STP treats an average of 0.22 MGD and is permitted for a design flow of 2.82 MGD.

What treatment technology does Mount Vernon City Of STP use?

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

What is the NPDES permit for Mount Vernon City Of STP?

The facility discharges under NPDES permit IA0023710, currently effective, expiring September 2030.

Is Mount Vernon City Of STP in compliance?

Discharge monitoring reports show 24 violations at Mount Vernon City Of STP in the last three years, 12 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Mount Vernon City Of STP

103 Country Club Drive, Mount Vernon, IA 52314 · Linn County · Publicly Owned Treatment Works

Average flow: 0.22 MGD

Design flow: 2.82 MGD

NPDES permit: IA0023710; Effective

Permit expires: September 2030

Population served: 4,755; CWNS 2022

Mount Vernon City Of STP is a publicly owned wastewater treatment works in Mount Vernon, Linn County, Iowa treating an average of 0.22 million gallons per day against a permitted design capacity of 2.82 MGD, serving about 4,755 residents. It discharges under NPDES permit IA0023710 (effective), which expires in September 2030, with 24 recorded violations in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 24

Effluent violations: 12

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

Key contacts

1 verified contact for Mount Vernon 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 Mount Vernon City Of STP, plus the full compliance history and discharge data.

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Mount Vernon 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 June 29, 2025.

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

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