Johnsonville WWTP East
Johnsonville, SC · Florence County · Publicly Owned Treatment Works
- Average flow
- 0.97 MGD
- Design flow
- 4.5 MGD
- NPDES permit
- SC0025933
- Administratively continued
- Permit expires
- November 2022
- Population served
- —
- CWNS 2022
Johnsonville WWTP East is a publicly owned wastewater treatment works in Johnsonville, Florence County, South Carolina treating an average of 0.97 million gallons per day against a permitted design capacity of 4.5 MGD. Treatment on site includes clarifiers, aerated lagoons. It discharges under NPDES permit SC0025933 (administratively continued), which expires in November 2022, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
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 Johnsonville WWTP East.
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Nearby wastewater treatment plants in South Carolina
Hemingway · 5 mi away
0.31 MGD
Pamplico · 12 mi away
0.09 MGD
Conway · 22 mi away
2.87 MGD
Marion · 23 mi away
1.06 MGD
Conway · 24 mi away
—
Kingstree · 25 mi away
1.24 MGD
Conway · 27 mi away
14.9 MGD
Florence · 29 mi away
10.19 MGD
Johnsonville WWTP East: 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 11, 2025.