Hammond North STP
1801 Mooney Avenue, Hammond, LA 70403 · Tangipahoa County · Publicly Owned Treatment Works
- Average flow
- 7.21 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 7.21 million gallons per day against a permitted design capacity of 2.5 MGD, serving about 31,466 residents. It discharges under NPDES permit LA0032328 (effective), which expires in August 2028, with 37 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in April 2008.
Treatment technology
3 treatment structures and unit processes identified at Hammond North STP.
Available with a free Klarifi account
See the full treatment train at Hammond North STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 37
- Effluent violations
- 31
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 Hammond North STP 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 · Apr 2008
Hammond City of
Administrative order · CWA, NPDES Permit Violations · Unilateral Administrative Order Without Adjudication · Compliance actions $100
EPA's description of the case:
“Violation: AO issued for failure to submit Annual Sludge Monitoring Reports for calandar years 2005 and 2006. Relief: Permittee shall submit Sludge Monitoring Reports.”
Source: EPA ECHO, civil enforcement case 06-2008-1732.
Full case history with a free Klarifi account
Every action against Hammond North STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Hammond North STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
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
0.17 MGD
Hammond · 3 mi away
0.13 MGD
Ponchatoula · 5 mi away
1.54 MGD
Hammond · 6 mi away
0.08 MGD
Tickfaw · 6 mi away
—
Albany · 6 mi away
0.00085 MGD
Springfield · 8 mi away
0.15 MGD
Independence · 10 mi away
0.41 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 October 26, 2026; facility record last updated March 9, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms