Mt Joy Boro Auth
Mount Joy, PA · Lancaster County · Publicly Owned Treatment Works
- Average flow
- 0.76 MGD
- Design flow
- 1.53 MGD
- NPDES permit
- PA0021067
- Effective
- Permit expires
- May 2031
- Population served
- 6,913
- CWNS 2022
Mt Joy Boro Auth is a publicly owned wastewater treatment plant in Mount Joy, Lancaster County, Pennsylvania treating an average of 0.76 million gallons per day against a permitted design capacity of 1.53 MGD, serving about 6,913 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos, biogas balloons. It discharges under NPDES permit PA0021067 (effective), which expires in May 2031, with 2 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
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Mt Joy Boro Auth, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Mt Joy Boro Auth, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Marietta · 4 mi away
0.58 MGD
Columbia · 5 mi away
1.58 MGD
Wrightsville · 6 mi away
0.37 MGD
Manheim · 6 mi away
0.48 MGD
Elizabethtown · 7 mi away
1.7 MGD
Manheim · 7 mi away
0.32 MGD
Lawn · 9 mi away
0.008 MGD
Bainbridge · 9 mi away
0.05 MGD
Mt Joy Boro Auth: 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 September 11, 2026.