How much wastewater does Saint Marys City Of STP treat?

Saint Marys City Of STP is permitted for a design flow of 0.02 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Saint Marys City Of STP use?

Klarifi has identified uncovered lagoons at the Saint Marys facility.

What is the NPDES permit for Saint Marys City Of STP?

The facility discharges under NPDES permit IA0072451, currently administratively continued, expiring September 2024.

Is Saint Marys City Of STP in compliance?

Discharge monitoring reports show 1 violation at Saint Marys City Of STP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

Try for free Log in

Saint Marys City Of STP

Saint Marys, IA · Warren County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.02 MGD

NPDES permit: IA0072451; Administratively continued

Permit expires: September 2024

Population served: 108; CWNS 2022

Saint Marys City Of STP is a publicly owned wastewater treatment works in Saint Marys, Warren County, Iowa, serving about 108 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IA0072451 (administratively continued), which expires in September 2024, with 1 recorded violation in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Uncovered lagoons

Unlock

Unlock exact unit counts →

Compliance snapshot (last 3 years)

Total violations: 1

Effluent violations: 1

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

Key contacts

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

Unlock 1 verified contact

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

Try Klarifi free

Nearby wastewater treatment plants in Iowa

St Charles City Of STP

Saint Charles · 3 mi away

—

Martensdale City Of STP

Martensdale · 4 mi away

—

Patterson City Of STP

Patterson · 7 mi away

—

New Virginia WWTP

New Virginia · 10 mi away

—

Indianola Water Resource Recovery Facility

Indianola · 10 mi away

—

East Peru City Of STP (warren Water District)

Peru · 11 mi away

—

Winterset City Of STP

Winterset · 13 mi away

—

Liberty Center City Of (warren Co. Board Of Supervisors)

Liberty Center · 15 mi away

—

Saint Marys 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 September 11, 2026; facility record last updated February 3, 2025.

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free