Marklesburg STP
James Creek, PA · Huntingdon County · Publicly Owned Treatment Works
- Average flow
- 0.005 MGD
- Design flow
- 0.03 MGD
- NPDES permit
- PA0086673
- Effective
- Permit expires
- September 2028
- Population served
- —
- CWNS 2022
Marklesburg STP is a publicly owned wastewater treatment works in James Creek, Huntingdon County, Pennsylvania treating an average of 0.005 million gallons per day against a permitted design capacity of 0.03 MGD. It discharges under NPDES permit PA0086673 (effective), which expires in September 2028, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Marklesburg STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Pennsylvania
Williamsburg · 6 mi away
0.13 MGD
James Creek · 6 mi away
0.0011 MGD
Martinsburg · 10 mi away
0.27 MGD
Hollidaysburg · 10 mi away
1.5 MGD
Huntingdon · 11 mi away
1.35 MGD
Mapleton Depot · 12 mi away
0.02 MGD
Saxton · 12 mi away
0.14 MGD
Saxton · 12 mi away
0.04 MGD
Marklesburg 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 July 18, 2023.