Gsw&sa/conway WWTP
Conway, SC · Horry County · Publicly Owned Treatment Works
- Average flow
- 2.87 MGD
- Design flow
- 4 MGD
- NPDES permit
- SC0021733
- Effective
- Permit expires
- March 2028
- Population served
- 2,546
- CWNS 2022
Gsw&sa/conway WWTP is a publicly owned wastewater treatment works in Conway, Horry County, South Carolina treating an average of 2.87 million gallons per day against a permitted design capacity of 4 MGD, serving about 2,546 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit SC0021733 (effective), which expires in March 2028, with 29 recorded violations 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
- 29
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Gsw&sa/conway WWTP.
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Nearby wastewater treatment plants in South Carolina
Conway · 3 mi away
—
Conway · 12 mi away
14.9 MGD
Murrells Inlet · 18 mi away
1.12 MGD
Loris · 19 mi away
0.36 MGD
Conway · 19 mi away
4.75 MGD
North Myrtle Beach · 20 mi away
0.95 MGD
Hemingway · 21 mi away
0.31 MGD
North Myrtle Beach · 22 mi away
1.87 MGD
Gsw&sa/conway 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 March 14, 2025.