Grove City Boro STP
Grove City, PA · Mercer County · Publicly Owned Treatment Works
- Average flow
- 1.05 MGD
- Design flow
- 3.34 MGD
- NPDES permit
- PA0020257
- Effective
- Permit expires
- October 2030
- Population served
- 19,518
- CWNS 2022
Grove City Boro STP is a publicly owned wastewater treatment works in Grove City, Mercer County, Pennsylvania treating an average of 1.05 million gallons per day against a permitted design capacity of 3.34 MGD, serving about 19,518 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos. It discharges under NPDES permit PA0020257 (effective), which expires in October 2030, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Aerated lagoons
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Uncovered lagoons
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Biogas silos
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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
2 verified contacts for Grove City Boro STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Grove City Boro STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Slippery Rock · 6 mi away
0.52 MGD
Volant · 9 mi away
0.007 MGD
Mercer · 9 mi away
0.07 MGD
Jackson Center · 9 mi away
0.01 MGD
Clintonville · 12 mi away
0.02 MGD
New Castle · 14 mi away
0.02 MGD
West Sunbury · 14 mi away
0.02 MGD
Sandy Lake · 14 mi away
0.15 MGD
Grove City Boro 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 May 25, 2025.