Upper Montgomery Joint Authority STP
Pennsburg, PA · Montgomery County · Publicly Owned Treatment Works
- Average flow
- 0.57 MGD
- Design flow
- —
- NPDES permit
- PAL020532
- Effective
- Permit expires
- December 2030
- Population served
- 6,698
- CWNS 2022
Upper Montgomery Joint Authority STP is a publicly owned wastewater treatment works in Pennsburg, Montgomery County, Pennsylvania treating an average of 0.57 million gallons per day, serving about 6,698 residents. Treatment on site includes clarifiers. It discharges under NPDES permit PAL020532 (effective), which expires in December 2030, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Upper Montgomery Joint Authority STP.
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Nearby wastewater treatment plants in Pennsylvania
Pennsburg · 1 mi away
0.15 MGD
Green Lane · 4 mi away
0.1 MGD
Bally · 4 mi away
0.16 MGD
Barto · 5 mi away
0.15 MGD
Spinnerstown · 5 mi away
0.47 MGD
Frederick · 6 mi away
0.03 MGD
Gilbertsville · 7 mi away
0.27 MGD
Gilbertsville · 8 mi away
0.42 MGD
Upper Montgomery Joint Authority STP: 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 May 25, 2025.