Elderton STP
Elderton, PA · Armstrong County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.06 MGD
- NPDES permit
- PA0093033
- Effective
- Permit expires
- March 2027
- Population served
- —
- CWNS 2022
Elderton STP is a publicly owned wastewater treatment works in Elderton, Armstrong County, Pennsylvania treating an average of 0.02 million gallons per day against a permitted design capacity of 0.06 MGD. Treatment on site includes uncovered lagoons. It discharges under NPDES permit PA0093033 (effective), which expires in March 2027, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Elderton STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Elderton STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Shelocta · 3 mi away
0.04 MGD
Margaret · 6 mi away
0.0024 MGD
Yatesboro · 8 mi away
0.08 MGD
Numine · 8 mi away
0.008 MGD
Indiana · 10 mi away
0.04 MGD
Indiana · 11 mi away
0.05 MGD
Ford City · 11 mi away
0.47 MGD
Kittanning · 12 mi away
0.3 MGD
Elderton 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 November 18, 2025.