Middletown WWTP
Middletown, MD · Frederick County · Publicly Owned Treatment Works
- Average flow
- 0.15 MGD
- Design flow
- 0.25 MGD
- NPDES permit
- MD0024406
- Administratively continued
- Permit expires
- July 2026
- Population served
- 1,622
- CWNS 2022
Middletown WWTP is a publicly owned wastewater treatment works in Middletown, Frederick County, Maryland treating an average of 0.15 million gallons per day against a permitted design capacity of 0.25 MGD, serving about 1,622 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit MD0024406 (administratively continued), which expires in July 2026, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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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.
Capital improvement projects in Middletown
Middletown's capital improvement plan lists 8 water, sewer and wastewater line items worth $2M starting 2026–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Middletown →
| Project | Budget | Years |
|---|---|---|
| New WWTP Design | $1,000,000 | 2026–2026 |
| PFAS Project (100% Grant) | $250,000 | 2026–2026 |
| High School Waterline Replacment summer 26 | $100,000 | 2026–2026 |
| MI Smart Point Meter Conversion (5 year install plan) | $98,067 | 2026–2026 |
| SCADA System Installation Well Field RTU | $41,000 | 2026–2026 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Middletown WWTP.
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Nearby wastewater treatment plants in Maryland
Middletown · 1 mi away
0.19 MGD
Middletown · 2 mi away
0.09 MGD
Myersville · 4 mi away
0.14 MGD
Jefferson · 5 mi away
0.13 MGD
Myersville · 6 mi away
0.01 MGD
Frederick · 7 mi away
0.01 MGD
Boonsboro · 7 mi away
0.26 MGD
Boonsboro · 8 mi away
0.0066 MGD
Middletown WWTP: 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 23, 2025.