Ingleside STP
407 Walsall Rd, Johnstown, PA 15904 · Cambria County · Publicly Owned Treatment Works
- Average flow
- 2.64 MGD
- Design flow
- 4 MGD
- NPDES permit
- PA0026778
- Expired
- Permit expires
- April 2026
- Population served
- —
- CWNS 2022
Ingleside STP is a publicly owned wastewater treatment works in Johnstown, Cambria County, Pennsylvania treating an average of 2.64 million gallons per day against a permitted design capacity of 4 MGD. It discharges under NPDES permit PA0026778 (expired), which expires in April 2026, with 2 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Ingleside STP.
Available with a free Klarifi account
See the full treatment train at Ingleside STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Ingleside STP.
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Nearby wastewater treatment plants in Pennsylvania
Johnstown · 2 mi away
0.22 MGD
Hollsopple · 4 mi away
0.1 MGD
Jerome · 5 mi away
0.07 MGD
Windber · 6 mi away
0.01 MGD
Hooversville · 7 mi away
0.59 MGD
Johnstown · 8 mi away
3.64 MGD
South Fork · 9 mi away
0.54 MGD
Boswell · 9 mi away
0.42 MGD
Ingleside 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 10, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms