Rosethorn WWTP
Lafitte, LA · Jefferson County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- 0.35 MGD
- NPDES permit
- LA0100846
- Effective
- Permit expires
- August 2028
- Population served
- —
- CWNS 2022
Rosethorn WWTP is a publicly owned wastewater treatment works in Lafitte, Jefferson County, Louisiana treating an average of 0.07 million gallons per day against a permitted design capacity of 0.35 MGD. It discharges under NPDES permit LA0100846 (effective), which expires in August 2028, with 6 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 6
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Rosethorn WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Louisiana
Belle Chasse · 6 mi away
1.34 MGD
Marrero · 8 mi away
6.19 MGD
Harvey · 8 mi away
—
Bridge City · 12 mi away
1.59 MGD
Gretna · 12 mi away
1.17 MGD
New Orleans · 13 mi away
10.13 MGD
New Orleans · 14 mi away
3.38 MGD
Harahan · 15 mi away
1.17 MGD
Rosethorn 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 September 11, 2026; facility record last updated July 18, 2023.