Plant B
Lake Charles, LA · Calcasieu County · Publicly Owned Treatment Works
- Average flow
- 5.74 MGD
- Design flow
- —
- NPDES permit
- LAL036366
- Effective
- Permit expires
- December 2030
- Population served
- 50,000
- CWNS 2022
Plant B is a publicly owned wastewater treatment plant in Lake Charles, Calcasieu County, Louisiana treating an average of 5.74 million gallons per day, serving about 50,000 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit LAL036366 (effective), which expires in December 2030, with 73 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
- 73
- Effluent violations
- 73
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Plant B.
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Nearby wastewater treatment plants in Louisiana
Lake Charles · 6 mi away
—
Iowa · 13 mi away
0.65 MGD
Dequincy · 19 mi away
0.11 MGD
Vinton · 20 mi away
0.43 MGD
Welsh · 24 mi away
0.2 MGD
Cameron · 29 mi away
0.42 MGD
Lake Arthur · 34 mi away
0.48 MGD
Jennings · 36 mi away
1.61 MGD
Plant B: 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 December 17, 2025.