Millerstown STP
Old Route 22 Rd 1, Millerstown, PA 17062 · Perry County · Publicly Owned Treatment Works
- Average flow
- 0.05 MGD
- Design flow
- 0.12 MGD
- NPDES permit
- PA0021849
- Effective
- Permit expires
- March 2031
- Population served
- —
- CWNS 2022
Millerstown STP is a publicly owned wastewater treatment works in Millerstown, Perry County, Pennsylvania treating an average of 0.05 million gallons per day against a permitted design capacity of 0.12 MGD. It discharges under NPDES permit PA0021849 (effective), which expires in March 2031, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Millerstown STP.
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
1 verified contact for Millerstown STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Millerstown STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Newport · 4 mi away
0.25 MGD
Thompsontown · 5 mi away
0.15 MGD
East Salem · 7 mi away
0.007 MGD
Liverpool · 8 mi away
0.06 MGD
New Bloomfield · 8 mi away
0.11 MGD
Mcalisterville · 9 mi away
0.06 MGD
Richfield · 11 mi away
0.06 MGD
Duncannon · 12 mi away
0.39 MGD
Millerstown 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 October 1, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms