Mahaffey Boro STP
Sr 219, Mahaffey, PA 15757 · Clearfield County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.07 MGD
- NPDES permit
- PA0112747
- Expired
- Permit expires
- March 2026
- Population served
- —
- CWNS 2022
Mahaffey Boro STP is a publicly owned wastewater treatment works in Mahaffey, Clearfield County, Pennsylvania treating an average of 0.04 million gallons per day against a permitted design capacity of 0.07 MGD. It discharges under NPDES permit PA0112747 (expired), which expires in March 2026, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Mahaffey Boro STP.
Available with a free Klarifi account
See the full treatment train at Mahaffey Boro STP: structures, unit processes and planned upgrades, with exact unit counts.
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 Mahaffey Boro STP.
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Nearby wastewater treatment plants in Pennsylvania
Burnside · 6 mi away
0.02 MGD
Glen Campbell · 6 mi away
0.02 MGD
Westover · 9 mi away
0.0091 MGD
Grampian · 10 mi away
0.04 MGD
Heilwood · 10 mi away
—
Punxsutawney · 10 mi away
0.06 MGD
Indiana · 11 mi away
0.02 MGD
Rossiter · 11 mi away
0.05 MGD
Mahaffey 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 October 12, 2026; facility record last updated April 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms