Hillsdale STP
Indiana, PA · Indiana County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- 0.06 MGD
- NPDES permit
- PA0218812
- Effective
- Permit expires
- March 2029
- Population served
- —
- CWNS 2022
Hillsdale STP is a publicly owned wastewater treatment works in Indiana, Indiana County, Pennsylvania treating an average of 0.01 million gallons per day against a permitted design capacity of 0.06 MGD. It discharges under NPDES permit PA0218812 (effective), which expires in March 2029, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hillsdale STP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Pennsylvania
Heilwood · 1 mi away
—
Glen Campbell · 5 mi away
0.0087 MGD
Cherry Tree · 5 mi away
0.006 MGD
Burnside · 5 mi away
0.0062 MGD
Starford · 7 mi away
0.03 MGD
Northern Cambria · 7 mi away
0.29 MGD
Marion Center · 10 mi away
0.05 MGD
Heilwood · 10 mi away
—
Hillsdale 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 October 2, 2025.