St. Michael'S WWTP
929 Calvert Avenue, Saint Michaels, MD 21663 · Talbot County · Publicly Owned Treatment Works
- Average flow
- 0.3 MGD
- Design flow
- 0.5 MGD
- NPDES permit
- MD0023604
- Effective
- Permit expires
- November 2030
- Population served
- 4,445
- CWNS 2022
St. Michael'S WWTP is a publicly owned wastewater treatment works in Saint Michaels, Talbot County, Maryland treating an average of 0.3 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 4,445 residents. It discharges under NPDES permit MD0023604 (effective), which expires in November 2030, with 0 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at St. Michael'S WWTP.
Available with a free Klarifi account
See the full treatment train at St. Michael'S WWTP: structures, unit processes and planned upgrades, with exact unit counts.
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
Decision-makers at St. Michael'S WWTP.
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Nearby wastewater treatment plants in Maryland
Oxford · 7 mi away
0.09 MGD
Tilghman · 8 mi away
0.11 MGD
Easton · 11 mi away
2.19 MGD
Trappe · 11 mi away
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Preston · 18 mi away
0.02 MGD
Secretary · 18 mi away
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Annapolis · 19 mi away
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Annapolis · 20 mi away
3.79 MGD
St. Michael'S 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 October 26, 2026; facility record last updated March 9, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms