City Of Great Falls WWTP
Great Falls, MT · Cascade County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- MT0021920
- Administratively continued
- Permit expires
- August 2024
- Population served
- 143
- CWNS 2022
City Of Great Falls WWTP is a publicly owned wastewater treatment works in Great Falls, Cascade County, Montana, serving about 143 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit MT0021920 (administratively continued), which expires in August 2024, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for City Of Great Falls WWTP, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at City Of Great Falls WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Great Falls · 2 mi away
0.27 MGD
Great Falls · 9 mi away
0.05 MGD
Vaughn · 12 mi away
0.03 MGD
Stockett · 12 mi away
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Belt · 20 mi away
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Highwood · 23 mi away
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Fairfield · 33 mi away
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Fort Benton · 37 mi away
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City Of Great Falls WWTP: 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 April 5, 2025.