Selbyville Wastewater Treatment Facility
Selbyville, DE · Sussex County · Publicly Owned Treatment Works
- Average flow
- 1.26 MGD
- Design flow
- —
- NPDES permit
- DE0020010
- Effective
- Permit expires
- April 2028
- Population served
- 2,459
- CWNS 2022
Selbyville Wastewater Treatment Facility is a publicly owned wastewater treatment works in Selbyville, Sussex County, Delaware treating an average of 1.26 million gallons per day, serving about 2,459 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit DE0020010 (effective), which expires in April 2028, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Selbyville Wastewater Treatment Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Selbyville Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Delaware
Frankford · 8 mi away
4.6 MGD
Laurel · 20 mi away
0.34 MGD
Lewes · 22 mi away
1.05 MGD
Milton · 22 mi away
0.23 MGD
Seaford · 24 mi away
1.57 MGD
Port Penn · 75 mi away
0.03 MGD
Delaware City · 79 mi away
0.37 MGD
Wilmington · 89 mi away
78.67 MGD
Selbyville Wastewater Treatment Facility: 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 February 9, 2025.