Gardiner Wastewater Treatment Facility
Gardiner, MT · Park County · Publicly Owned Treatment Works
- Average flow
- 0.13 MGD
- Design flow
- 0.47 MGD
- NPDES permit
- MT0022705
- Effective
- Permit expires
- September 2027
- Population served
- 884
- CWNS 2022
Gardiner Wastewater Treatment Facility is a publicly owned wastewater treatment works in Gardiner, Park County, Montana treating an average of 0.13 million gallons per day against a permitted design capacity of 0.47 MGD, serving about 884 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit MT0022705 (effective), which expires in September 2027, with 119 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
- 119
- Effluent violations
- 31
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Gardiner Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Gardiner Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Bozeman · 41 mi away
0.13 MGD
Livingston · 45 mi away
0.69 MGD
Bozeman · 48 mi away
0.19 MGD
Bozeman · 49 mi away
7.35 MGD
Ennis · 52 mi away
0.13 MGD
Belgrade · 56 mi away
0.5 MGD
Belgrade · 56 mi away
0.15 MGD
Manhattan · 64 mi away
0.32 MGD
Gardiner Wastewater Treatment Facility: 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 13, 2025.