Port Royal STP
Port Royal, PA · Juniata County · Publicly Owned Treatment Works
- Average flow
- 0.05 MGD
- Design flow
- 0.2 MGD
- NPDES permit
- PA0020648
- Effective
- Permit expires
- June 2029
- Population served
- —
- CWNS 2022
Port Royal STP is a publicly owned wastewater treatment works in Port Royal, Juniata County, Pennsylvania treating an average of 0.05 million gallons per day against a permitted design capacity of 0.2 MGD. It discharges under NPDES permit PA0020648 (effective), which expires in June 2029, with 39 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
- 39
- Effluent violations
- 39
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Port Royal STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Pennsylvania
Mifflin · 2 mi away
0.3 MGD
Thompsontown · 8 mi away
0.16 MGD
Mcalisterville · 8 mi away
0.04 MGD
East Salem · 9 mi away
0.005 MGD
Lewistown · 10 mi away
0.96 MGD
Loysville · 12 mi away
0.23 MGD
Mcclure · 12 mi away
0.13 MGD
Millerstown · 13 mi away
0.04 MGD
Port Royal 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 October 1, 2025.