Saxonburg Area Authority STP
Renfrew, PA · Butler County · Publicly Owned Treatment Works
- Average flow
- 0.62 MGD
- Design flow
- 2.05 MGD
- NPDES permit
- PA0029122
- Effective
- Permit expires
- November 2030
- Population served
- 14,883
- CWNS 2022
Saxonburg Area Authority STP is a publicly owned wastewater treatment works in Renfrew, Butler County, Pennsylvania treating an average of 0.62 million gallons per day against a permitted design capacity of 2.05 MGD, serving about 14,883 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit PA0029122 (effective), which expires in November 2030, with 22 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 22
- Effluent violations
- 22
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Saxonburg Area Authority STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Pennsylvania
Connoquenessing · 3 mi away
0.03 MGD
Evans City · 6 mi away
0.32 MGD
Mars · 7 mi away
1.49 MGD
Russellton · 11 mi away
0.008 MGD
Fombell · 11 mi away
0.02 MGD
Cranberry Township · 11 mi away
0.002 MGD
West Sunbury · 15 mi away
0.02 MGD
Chicora · 15 mi away
0.1 MGD
Saxonburg Area Authority 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 July 2, 2025.