Topton Boro STP
Mertztown, PA · Berks County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 0.3 MGD
- NPDES permit
- PA0020711
- Effective
- Permit expires
- June 2029
- Population served
- —
- CWNS 2022
Topton Boro STP is a publicly owned wastewater treatment works in Mertztown, Berks County, Pennsylvania treating an average of 0.14 million gallons per day against a permitted design capacity of 0.3 MGD. Treatment on site includes uncovered lagoons. It discharges under NPDES permit PA0020711 (effective), which expires in June 2029, with 13 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Topton Boro STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Topton Boro STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Lyons · 4 mi away
0.21 MGD
Kutztown · 5 mi away
0.81 MGD
Fleetwood · 9 mi away
0.38 MGD
Bally · 9 mi away
0.16 MGD
Oley · 9 mi away
0.19 MGD
Barto · 10 mi away
0.15 MGD
Virginville · 10 mi away
0.0031 MGD
Temple · 11 mi away
0.02 MGD
Topton Boro 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 May 25, 2025.