Marion STP
395 Lowry St, Marion, MI 49665 · Osceola County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- MIG580361
- Administratively continued
- Permit expires
- April 2024
- Population served
- 798
- CWNS 2022
Marion STP is a publicly owned wastewater treatment works in Marion, Osceola County, Michigan, serving about 798 residents. It discharges under NPDES permit MIG580361 (administratively continued), which expires in April 2024, with 15 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Marion STP.
Available with a free Klarifi account
See the full treatment train at Marion STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 15
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Marion STP.
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Nearby wastewater treatment plants in Michigan
Cadillac · 18 mi away
1.99 MGD
Houghton Lake · 23 mi away
1.71 MGD
Reed City · 24 mi away
0.51 MGD
Barryton · 24 mi away
0.87 MGD
Clare · 27 mi away
0.55 MGD
Prudenville · 27 mi away
1.05 MGD
Gladwin · 33 mi away
0.8 MGD
Remus · 33 mi away
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Marion 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 19, 2026; facility record last updated April 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms