Mifflinburg WWTP
Mifflinburg, PA · Union County · Publicly Owned Treatment Works
- Average flow
- 0.49 MGD
- Design flow
- 1.4 MGD
- NPDES permit
- PA0028461
- Effective
- Permit expires
- April 2027
- Population served
- 3,673
- CWNS 2022
Mifflinburg WWTP is a publicly owned wastewater treatment works in Mifflinburg, Union County, Pennsylvania treating an average of 0.49 million gallons per day against a permitted design capacity of 1.4 MGD, serving about 3,673 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit PA0028461 (effective), which expires in April 2027, 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 Mifflinburg WWTP.
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Nearby wastewater treatment plants in Pennsylvania
Penns Creek · 4 mi away
0.03 MGD
New Berlin · 5 mi away
0.1 MGD
Millmont · 6 mi away
0.02 MGD
Hartleton · 6 mi away
0.0051 MGD
Laurelton · 8 mi away
0.05 MGD
Lewisburg · 9 mi away
0.84 MGD
Middleburg · 9 mi away
0.12 MGD
Kreamer · 9 mi away
0.04 MGD
Mifflinburg WWTP: 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 March 8, 2025.