How much wastewater does Marion, City Of treat?

Marion, City Of is permitted for a design flow of 0.08 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Marion, City Of use?

Klarifi has identified uncovered lagoons at the Marion facility.

What is the NPDES permit for Marion, City Of?

The facility discharges under NPDES permit SD0020311, currently effective, expiring January 2031.

Is Marion, City Of in compliance?

Discharge monitoring reports show 91 violations at Marion, City Of in the last three years, 2 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Marion, City Of and how do I contact them?

Marion, City Of is a publicly owned treatment works in Marion, South Dakota. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Marion, City Of

Marion, SD · Turner County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.08 MGD

NPDES permit: SD0020311; Effective

Permit expires: January 2031

Population served: 903; CWNS 2022

Marion, City Of is a publicly owned wastewater treatment plant in Marion, Turner County, South Dakota, serving about 903 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit SD0020311 (effective), which expires in January 2031, with 91 recorded violations in the last three years.

Treatment technology

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

Uncovered lagoons

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Compliance snapshot (last 3 years)

Total violations: 91

Effluent violations: 2

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

Key contacts

Decision-makers at Marion, City Of.

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Nearby wastewater treatment plants in South Dakota

Monroe, Town Of

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Canistota, City Of

Canistota · 11 mi away

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Chancellor, Town Of

Chancellor · 13 mi away

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Hurley - City Of

Hurley · 14 mi away

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Freeman, City Of

Freeman · 14 mi away

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Bridgewater, City Of

Bridgewater · 16 mi away

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Lennox, City Of

Lennox · 18 mi away

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Hartford, City Of

Hartford · 19 mi away

0.29 MGD

Marion, City Of: 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 November 19, 2025.

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