Antrim Twp Mun Auth STP
Greencastle, PA · Franklin County · Publicly Owned Treatment Works
- Average flow
- 0.61 MGD
- Design flow
- 1.2 MGD
- NPDES permit
- PA0080519
- Effective
- Permit expires
- June 2029
- Population served
- 6,654
- CWNS 2022
Antrim Twp Mun Auth STP is a publicly owned wastewater treatment works in Greencastle, Franklin County, Pennsylvania treating an average of 0.61 million gallons per day against a permitted design capacity of 1.2 MGD, serving about 6,654 residents. It discharges under NPDES permit PA0080519 (effective), which expires in June 2029, with 0 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
- 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 Antrim Twp Mun Auth STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Antrim Twp Mun Auth STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Greencastle · 4 mi away
0.27 MGD
Greencastle · 5 mi away
0.02 MGD
Mercersburg · 9 mi away
0.11 MGD
Mercersburg · 9 mi away
0.05 MGD
Chambersburg · 11 mi away
0.16 MGD
Waynesboro · 11 mi away
0.16 MGD
Mercersburg · 12 mi away
0.04 MGD
Mont Alto · 13 mi away
0.07 MGD
Antrim Twp Mun Auth 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 August 13, 2026.