Harrison County School District
14222 Old Highway 49, Gulfport, MS 39503 · Harrison County · Publicly Owned Treatment Works
- Average flow
- 0.27 MGD
- Design flow
- 0.5 MGD
- NPDES permit
- MS0061191
- Effective
- Permit expires
- April 2029
- Population served
- 9,121
- CWNS 2022
Harrison County School District is a publicly owned wastewater treatment plant in Gulfport, Harrison County, Mississippi treating an average of 0.27 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 9,121 residents. It discharges under NPDES permit MS0061191 (effective), which expires in April 2029, with 3 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Harrison County School District.
Available with a free Klarifi account
See the full treatment train at Harrison County School District: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Harrison County School District.
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Nearby wastewater treatment plants in Mississippi
Gulfport · 4 mi away
0.09 MGD
Mchenry · 12 mi away
0.08 MGD
Biloxi · 12 mi away
5.57 MGD
Long Beach · 14 mi away
0.22 MGD
2.95 MGD
Diamondhead · 19 mi away
0.98 MGD
Poplarville · 32 mi away
0.31 MGD
Bay Saint Louis · 33 mi away
0.21 MGD
Harrison County School District: 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 August 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms