Durham St Extension, Clayton, NC 27520 · Johnston County · Publicly Owned Treatment Works
Sam'S Branch WRF is a publicly owned wastewater treatment works in Clayton, Johnston County, North Carolina treating an average of 1.42 million gallons per day against a permitted design capacity of 2.5 MGD, serving about 24,094 residents. It discharges under NPDES permit NC0025453 (effective), which expires in March 2030, with 4 recorded violations in the last three years.
2 treatment structures and unit processes identified at Sam'S Branch WRF.
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See the full treatment train at Sam'S Branch WRF: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
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Raleigh · 6 mi away
47.05 MGD
Smithfield · 11 mi away
2.91 MGD
Fuquay Varina · 15 mi away
1.49 MGD
Fuquay Varina · 15 mi away
0.07 MGD
Zebulon · 16 mi away
1.05 MGD
Apex · 16 mi away
5.96 MGD
Kenly · 18 mi away
0.3 MGD
Apex · 21 mi away
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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 September 16, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms