Big Timber
Big Timber, MT · Sweet Grass County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- MT0020753
- Administratively continued
- Permit expires
- April 2017
- Population served
- 1,809
- CWNS 2022
Big Timber is a publicly owned wastewater treatment plant in Big Timber, Sweet Grass County, Montana, serving about 1,809 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit MT0020753 (administratively continued), which expires in April 2017, with 44 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 44
- Effluent violations
- 44
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Big Timber, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Big Timber, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Livingston · 31 mi away
0.69 MGD
Columbus · 37 mi away
0.14 MGD
Harlowton · 41 mi away
0.07 MGD
Park City · 52 mi away
0.1 MGD
Joliet · 53 mi away
0.06 MGD
Bozeman · 53 mi away
0.19 MGD
Red Lodge · 55 mi away
0.57 MGD
Bozeman · 55 mi away
7.35 MGD
Big Timber: 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 8, 2025.