Sullivans Island WWTF
Sullivans Island-PO Box 427, Sullivans Island, SC 29482 · Charleston County · Publicly Owned Treatment Works
- Average flow
- 0.28 MGD
- Design flow
- 0.57 MGD
- NPDES permit
- SC0020052
- Administratively continued
- Permit expires
- December 2023
- Population served
- —
- CWNS 2022
Sullivans Island WWTF is a publicly owned wastewater treatment works in Sullivans Island, Charleston County, South Carolina treating an average of 0.28 million gallons per day against a permitted design capacity of 0.57 MGD. It discharges under NPDES permit SC0020052 (administratively continued), which expires in December 2023, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Sullivans Island WWTF.
Available with a free Klarifi account
See the full treatment train at Sullivans Island WWTF: 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 Sullivans Island WWTF.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in South Carolina
Mount Pleasant · 3 mi away
6.96 MGD
Isle Of Palms · 3 mi away
0.08 MGD
Charleston · 6 mi away
21.36 MGD
Charleston · 7 mi away
—
North Charleston · 8 mi away
14.5 MGD
Goose Creek · 15 mi away
8.77 MGD
Dorchester · 19 mi away
6.84 MGD
Summerville · 27 mi away
4.75 MGD
Sullivans Island 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 October 26, 2026; facility record last updated August 3, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms