Hammond North STP
Hammond, LA · Tangipahoa County · Publicly Owned Treatment Works
- Average flow
- 4.87 MGD
- Design flow
- 2.5 MGD
- NPDES permit
- LA0032328
- Effective
- Permit expires
- August 2028
- Population served
- 31,466
- CWNS 2022
Hammond North STP is a publicly owned wastewater treatment works in Hammond, Tangipahoa County, Louisiana treating an average of 4.87 million gallons per day against a permitted design capacity of 2.5 MGD, serving about 31,466 residents. Treatment on site includes aerated lagoons, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit LA0032328 (effective), which expires in August 2028, with 36 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 36
- Effluent violations
- 30
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Hammond North STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Hammond North STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Louisiana
Hammond · 2 mi away
0.07 MGD
Hammond · 3 mi away
0.11 MGD
Ponchatoula · 5 mi away
1.24 MGD
Hammond · 6 mi away
0.09 MGD
Tickfaw · 6 mi away
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Albany · 6 mi away
0.00072 MGD
Springfield · 8 mi away
0.1 MGD
Independence · 10 mi away
0.22 MGD
Hammond North STP: 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 March 9, 2025.