Nassau Regional WWTF
Yulee, FL · Nassau County · Publicly Owned Treatment Works
- Average flow
- 2.22 MGD
- Design flow
- 4 MGD
- NPDES permit
- FL0116793
- Effective
- Permit expires
- January 2031
- Population served
- 14,972
- CWNS 2022
Nassau Regional WWTF is a publicly owned wastewater treatment works in Yulee, Nassau County, Florida treating an average of 2.22 million gallons per day against a permitted design capacity of 4 MGD, serving about 14,972 residents. Treatment on site includes uncovered lagoons, biological treatment, other, disinfection, uv, microfiltration (mf), screening. It discharges under NPDES permit FL0116793 (effective), which expires in January 2031, with 247 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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Biological Treatment, Other
unit processDisinfection, UV
unit processMicrofiltration (MF)
unit processScreening
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Compliance snapshot (last 3 years)
- Total violations
- 247
- Effluent violations
- 52
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Nassau Regional WWTF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Nassau Regional WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Florida
Callahan · 17 mi away
0.14 MGD
Jacksonville · 19 mi away
24.34 MGD
Hilliard · 22 mi away
0.33 MGD
Ponte Vedra Beach · 28 mi away
0.5 MGD
Jacksonville · 29 mi away
12.59 MGD
Orange Park · 32 mi away
0.96 MGD
Jacksonville · 32 mi away
3.74 MGD
Jacksonville · 34 mi away
0.2 MGD
Nassau Regional WWTF: 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 March 16, 2025.