City Of Opelousas - South Opelousas WWTP
0.3Mi N Of Champagne Dr On I-49 S Service Rd, Opelousas, LA 70570 · St. Landry County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.3 MGD
- NPDES permit
- LA0127469
- Effective
- Permit expires
- August 2031
- Population served
- —
- CWNS 2022
City Of Opelousas - South Opelousas WWTP is a publicly owned wastewater treatment works in Opelousas, St. Landry County, Louisiana treating an average of 0.04 million gallons per day against a permitted design capacity of 0.3 MGD. It discharges under NPDES permit LA0127469 (effective), which expires in August 2031, with 51 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at City Of Opelousas - South Opelousas WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 51
- Effluent violations
- 27
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for City Of Opelousas - South Opelousas WWTP, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at City Of Opelousas - South Opelousas WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Louisiana
Opelousas · 1 mi away
2.52 MGD
Opelousas · 2 mi away
0.08 MGD
Grand Coteau · 5 mi away
0.27 MGD
Sunset · 6 mi away
—
Arnaudville · 7 mi away
0.06 MGD
Washington · 9 mi away
0.07 MGD
Port Barre · 9 mi away
—
Church Point · 9 mi away
0.15 MGD
City Of Opelousas - South Opelousas 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 October 26, 2026; facility record last updated July 18, 2023.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms