Garyville WWTP
1076 Hwy 54, Garyville, LA 70051 · St. John The Baptist Parish County · Publicly Owned Treatment Works
- Average flow
- 0.34 MGD
- Design flow
- —
- NPDES permit
- LAL079596
- Effective
- Permit expires
- December 2030
- Population served
- —
- CWNS 2022
Garyville WWTP is a publicly owned wastewater treatment works in Garyville, St. John The Baptist Parish County, Louisiana treating an average of 0.34 million gallons per day. It discharges under NPDES permit LAL079596 (effective), which expires in December 2030, with 4 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in January 2004.
Treatment technology
Treatment structures and unit processes at Garyville WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Garyville WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $100
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jan 2004
St. John the Baptist Parrish
Administrative order · CWA, Sewage Sludge Disposal · Unilateral Administrative Order Without Adjudication · Compliance actions $100
Source: EPA ECHO, civil enforcement case 06-2004-1815.
Full case history with a free Klarifi account
Every action against Garyville WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Garyville WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Louisiana
Reserve · 3 mi away
1.29 MGD
Edgard · 4 mi away
0.07 MGD
Edgard · 6 mi away
0.07 MGD
St. James · 14 mi away
0.0014 MGD
Hahnville · 14 mi away
1.82 MGD
Sorrento · 16 mi away
—
Destrehan · 19 mi away
3.1 MGD
Thibodaux · 20 mi away
0.63 MGD
Garyville 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 · Ozonation · Activated sludge · all terms