Yellow Bay WWTP
32125 Bio Station Lane, Polson, MT 59860 · Lake County · Publicly Owned Treatment Works
- Average flow
- 0.0086 MGD
- Design flow
- 0.03 MGD
- NPDES permit
- MT0023388
- Administratively continued
- Permit expires
- September 2023
- Population served
- —
- CWNS 2022
Yellow Bay WWTP is a publicly owned wastewater treatment works in Polson, Lake County, Montana treating an average of 0.0086 million gallons per day against a permitted design capacity of 0.03 MGD. It discharges under NPDES permit MT0023388 (administratively continued), which expires in September 2023, with 222 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Yellow Bay WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 222
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Yellow Bay WWTP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Montana
Bigfork · 12 mi away
0.007 MGD
Bigfork · 13 mi away
0.37 MGD
Polson · 14 mi away
0.86 MGD
Kalispell · 24 mi away
3.96 MGD
Ronan · 25 mi away
—
Pablo · 25 mi away
—
Charlo · 31 mi away
0.02 MGD
Hot Springs · 34 mi away
0.43 MGD
Yellow Bay 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 October 26, 2026; facility record last updated February 15, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms