Hollidaysburg Regional STP
Hollidaysburg, PA · Blair County · Publicly Owned Treatment Works
- Average flow
- 1.5 MGD
- Design flow
- —
- NPDES permit
- PAL043273
- Effective
- Permit expires
- December 2030
- Population served
- —
- CWNS 2022
Hollidaysburg Regional STP is a publicly owned wastewater treatment works in Hollidaysburg, Blair County, Pennsylvania treating an average of 1.5 million gallons per day. Treatment on site includes biogas silos. It discharges under NPDES permit PAL043273 (effective), which expires in December 2030, with 8 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas silos
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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
2 verified contacts for Hollidaysburg Regional STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Hollidaysburg Regional STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Duncansville · 4 mi away
0.53 MGD
Duncansville · 5 mi away
0.21 MGD
Roaring Spring · 7 mi away
0.35 MGD
Duncansville · 7 mi away
0.05 MGD
Martinsburg · 8 mi away
0.27 MGD
Altoona · 9 mi away
2.82 MGD
Williamsburg · 9 mi away
0.13 MGD
Claysburg · 9 mi away
0.39 MGD
Hollidaysburg Regional 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 March 2, 2025.