Delmar WWTP
Delmar, MD · Wicomico County · Publicly Owned Treatment Works
- Average flow
- 0.54 MGD
- Design flow
- 0.85 MGD
- NPDES permit
- MD0020532
- Effective
- Permit expires
- July 2031
- Population served
- 7,624
- CWNS 2022
Delmar WWTP is a publicly owned wastewater treatment works in Delmar, Wicomico County, Maryland treating an average of 0.54 million gallons per day against a permitted design capacity of 0.85 MGD, serving about 7,624 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit MD0020532 (effective), which expires in July 2031, with 6 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
- 6
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Delmar WWTP.
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Nearby wastewater treatment plants in Maryland
Salisbury · 5 mi away
5.05 MGD
Hebron · 7 mi away
0.08 MGD
Fruitland · 7 mi away
0.41 MGD
Sharptown · 11 mi away
0.04 MGD
Vienna · 14 mi away
0.05 MGD
Snow Hill · 20 mi away
0.26 MGD
Federalsburg · 21 mi away
0.21 MGD
Secretary · 24 mi away
0.13 MGD
Delmar 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 August 13, 2026.