St John The Baptist Parish- Reserve WWTP
Za Montz Rd North Of US Hwy 61, Reserve, LA 70000 · St. John The Baptist County · Publicly Owned Treatment Works
- Average flow
- 1.29 MGD
- Design flow
- 5 MGD
- NPDES permit
- LA0127097
- Effective
- Permit expires
- December 2027
- Population served
- 8,611
- CWNS 2022
St John The Baptist Parish- Reserve WWTP is a publicly owned wastewater treatment works in Reserve, St. John The Baptist County, Louisiana treating an average of 1.29 million gallons per day against a permitted design capacity of 5 MGD, serving about 8,611 residents. It discharges under NPDES permit LA0127097 (effective), which expires in December 2027, with 19 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at St John The Baptist Parish- Reserve WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 19
- Effluent violations
- 19
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for St John The Baptist Parish- Reserve WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at St John The Baptist Parish- Reserve WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Louisiana
Edgard · 2 mi away
0.07 MGD
Edgard · 3 mi away
0.07 MGD
Garyville · 3 mi away
0.34 MGD
Hahnville · 11 mi away
1.82 MGD
Destrehan · 16 mi away
3.1 MGD
St. James · 16 mi away
0.0014 MGD
Luling · 18 mi away
1.66 MGD
Sorrento · 19 mi away
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St John The Baptist Parish- Reserve 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 January 30, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms