Napoleonville Sto
Napoleonville, LA · Assumption County · Publicly Owned Treatment Works
- Average flow
- 0.1 MGD
- Design flow
- 0.2 MGD
- NPDES permit
- LA0043966
- Effective
- Permit expires
- April 2028
- Population served
- —
- CWNS 2022
Napoleonville Sto is a publicly owned wastewater treatment plant in Napoleonville, Assumption County, Louisiana treating an average of 0.1 million gallons per day against a permitted design capacity of 0.2 MGD. It discharges under NPDES permit LA0043966 (effective), which expires in April 2028, with 15 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
- 15
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Napoleonville Sto, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Napoleonville Sto, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Louisiana
Donaldsonville · 10 mi away
1.34 MGD
Morgan City · 14 mi away
—
Thibodaux · 15 mi away
0.55 MGD
Thibodaux · 16 mi away
2.1 MGD
Thibodaux · 18 mi away
0.13 MGD
Amelia · 18 mi away
0.24 MGD
Sorrento · 20 mi away
—
Saint Gabriel · 21 mi away
0.17 MGD
Napoleonville Sto: 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.