Hilton Head No 1 Psd Wastewater Treatment Plant
21 Oak Park Dr, Hilton Head Island, SC 29926 · Beaufort County · Publicly Owned Treatment Works
- Average flow
- 2.51 MGD
- Design flow
- 6.4 MGD
- NPDES permit
- SC0046191
- Administratively continued
- Permit expires
- December 2025
- Population served
- —
- CWNS 2022
Hilton Head No 1 Psd Wastewater Treatment Plant is a publicly owned wastewater treatment works in Hilton Head Island, Beaufort County, South Carolina treating an average of 2.51 million gallons per day against a permitted design capacity of 6.4 MGD. It discharges under NPDES permit SC0046191 (administratively continued), which expires in December 2025, with 17 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Hilton Head No 1 Psd Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Hilton Head No 1 Psd Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hilton Head No 1 Psd Wastewater Treatment Plant.
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Nearby wastewater treatment plants in South Carolina
Hilton Head · 7 mi away
0.96 MGD
Port Royal · 13 mi away
3.58 MGD
Ridgeland · 17 mi away
6.85 MGD
Beaufort · 24 mi away
0.0014 MGD
Hardeeville · 25 mi away
0.58 MGD
Edisto Island · 28 mi away
0.15 MGD
Yemassee · 34 mi away
0.12 MGD
Walterboro · 47 mi away
1.25 MGD
Hilton Head No 1 Psd Wastewater Treatment Plant: 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 August 16, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms