Diamondhead Water Sewer District
4425 Park Ten Dr, Diamondhead, MS 39525 · Hancock County · Publicly Owned Treatment Works
- Average flow
- 0.98 MGD
- Design flow
- 2.5 MGD
- NPDES permit
- MS0046078
- Effective
- Permit expires
- February 2028
- Population served
- —
- CWNS 2022
Diamondhead Water Sewer District is a publicly owned wastewater treatment works in Diamondhead, Hancock County, Mississippi treating an average of 0.98 million gallons per day against a permitted design capacity of 2.5 MGD. It discharges under NPDES permit MS0046078 (effective), which expires in February 2028, with 0 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in January 2007.
Treatment technology
One treatment structure or unit process identified at Diamondhead Water Sewer District.
Available with a free Klarifi account
See the full treatment train at Diamondhead Water Sewer District: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
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 Diamondhead Water Sewer District in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Penalties assessed
- $600
- all cases
- Compliance actions
- $5,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jan 2007
Diamondhead Water & Sewer District Sewer System
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $5,000
EPA's description of the case:
“AO issued 10/18/2002. Respondent discharged untreated wastewater containing pollutants to the Waters of the United States at locations not authorized by an NPDES permit. In violation of the CWA ��…”
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Source: EPA ECHO, civil enforcement case 04-2003-4765.
Full case history with a free Klarifi account
Every action against Diamondhead Water Sewer District with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Diamondhead Water Sewer District.
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Nearby wastewater treatment plants in Mississippi
Long Beach · 11 mi away
0.22 MGD
Bay Saint Louis · 14 mi away
0.21 MGD
Gulfport · 19 mi away
0.27 MGD
Picayune · 20 mi away
0.17 MGD
Picayune · 22 mi away
0.7 MGD
Gulfport · 23 mi away
0.09 MGD
Biloxi · 25 mi away
5.57 MGD
Mchenry · 29 mi away
0.08 MGD
Diamondhead Water Sewer 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 18, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms