Three Forks WWTF
Three Forks, MT · Gallatin County · Publicly Owned Treatment Works
- Average flow
- 0.31 MGD
- Design flow
- 0.61 MGD
- NPDES permit
- MT0020401
- Effective
- Permit expires
- April 2027
- Population served
- 2,049
- CWNS 2022
Three Forks WWTF is a publicly owned wastewater treatment works in Three Forks, Gallatin County, Montana treating an average of 0.31 million gallons per day against a permitted design capacity of 0.61 MGD, serving about 2,049 residents. Treatment on site includes covered lagoons, uncovered lagoons. It discharges under NPDES permit MT0020401 (effective), which expires in April 2027, with 5 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
- 5
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Three Forks WWTF, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Three Forks WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Willow Creek · 7 mi away
—
Manhattan · 10 mi away
0.32 MGD
Belgrade · 17 mi away
0.15 MGD
Belgrade · 19 mi away
0.5 MGD
Bozeman · 25 mi away
7.35 MGD
Bozeman · 28 mi away
0.19 MGD
Townsend · 30 mi away
0.19 MGD
Bozeman · 32 mi away
0.13 MGD
Three Forks WWTF: 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 August 18, 2026.