W Elizabeth STP
West Elizabeth, PA · Allegheny County · Publicly Owned Treatment Works
- Average flow
- 0.35 MGD
- Design flow
- 1.06 MGD
- NPDES permit
- PA0022331
- Expired
- Permit expires
- March 2025
- Population served
- 6,489
- CWNS 2022
W Elizabeth STP is a publicly owned wastewater treatment works in West Elizabeth, Allegheny County, Pennsylvania treating an average of 0.35 million gallons per day against a permitted design capacity of 1.06 MGD, serving about 6,489 residents. It discharges under NPDES permit PA0022331 (expired), which expires in March 2025, with 0 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
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for W Elizabeth STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at W Elizabeth STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Elizabeth · 1 mi away
0.57 MGD
Clairton · 2 mi away
3.42 MGD
Glassport · 4 mi away
0.51 MGD
West Mifflin · 4 mi away
0.24 MGD
Coulters · 5 mi away
0.01 MGD
Clairton · 5 mi away
1.83 MGD
Pittsburgh · 5 mi away
3.22 MGD
Monongahela · 5 mi away
0.85 MGD
W Elizabeth 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 December 2, 2025.