Mtn Shadows Phase I STP
Norvelt, PA · Westmoreland County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.03 MGD
- NPDES permit
- PA0218740
- Effective
- Permit expires
- September 2029
- Population served
- —
- CWNS 2022
Mtn Shadows Phase I STP is a publicly owned wastewater treatment works in Norvelt, Westmoreland County, Pennsylvania. Treatment on site includes uncovered lagoons. It discharges under NPDES permit PA0218740 (effective), which expires in September 2029, with 0 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
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mtn Shadows Phase I STP.
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Nearby wastewater treatment plants in Pennsylvania
United · 2 mi away
0.09 MGD
Greensburg · 4 mi away
0.37 MGD
Mount Pleasant · 4 mi away
0.74 MGD
Hunker · 6 mi away
3.14 MGD
Alverton · 6 mi away
0.11 MGD
Greensburg · 7 mi away
0.32 MGD
Latrobe · 9 mi away
0.24 MGD
Sewickley · 11 mi away
0.002 MGD
Mtn Shadows Phase I 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 September 4, 2025.