Mawc Furnace Run
Ligonier, PA · Westmoreland County · Publicly Owned Treatment Works
- Average flow
- 0.34 MGD
- Design flow
- 3.6 MGD
- NPDES permit
- PA0024864
- Effective
- Permit expires
- October 2030
- Population served
- —
- CWNS 2022
Mawc Furnace Run is a publicly owned wastewater treatment plant in Ligonier, Westmoreland County, Pennsylvania treating an average of 0.34 million gallons per day against a permitted design capacity of 3.6 MGD. It discharges under NPDES permit PA0024864 (effective), which expires in October 2030, with 2 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
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Mawc Furnace Run, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Mawc Furnace Run, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Derry · 7 mi away
0.54 MGD
Derry · 8 mi away
0.02 MGD
Latrobe · 9 mi away
3.1 MGD
Latrobe · 9 mi away
0.24 MGD
Robinson · 12 mi away
0.04 MGD
Heilwood · 12 mi away
0.007 MGD
Greensburg · 12 mi away
0.37 MGD
Boswell · 13 mi away
0.27 MGD
Mawc Furnace Run: 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.