Johnsonburg STP
Ridgway Ave, Johnsonburg, PA 15845 · Elk County · Publicly Owned Treatment Works
- Average flow
- 0.54 MGD
- Design flow
- 1 MGD
- NPDES permit
- PA0020401
- Effective
- Permit expires
- September 2030
- Population served
- 4,525
- CWNS 2022
Johnsonburg STP is a publicly owned wastewater treatment works in Johnsonburg, Elk County, Pennsylvania treating an average of 0.54 million gallons per day against a permitted design capacity of 1 MGD, serving about 4,525 residents. It discharges under NPDES permit PA0020401 (effective), which expires in September 2030, with 8 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Johnsonburg STP.
Available with a free Klarifi account
See the full treatment train at Johnsonburg STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 8
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Johnsonburg STP.
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Nearby wastewater treatment plants in Pennsylvania
Ridgway · 5 mi away
1.32 MGD
Saint Marys · 6 mi away
2.45 MGD
Kersey · 9 mi away
0.2 MGD
Kane · 15 mi away
0.56 MGD
Hazel Hurst · 17 mi away
0.02 MGD
Brockway · 17 mi away
0.27 MGD
Weedville · 17 mi away
0.11 MGD
Mount Jewett · 17 mi away
0.29 MGD
Johnsonburg 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 October 12, 2026; facility record last updated May 25, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms