Rock Hall WWTP
North Main Street And Anderson Ave., Rock Hall, MD 21661 · Kent County · Publicly Owned Treatment Works
- Average flow
- 0.21 MGD
- Design flow
- 0.51 MGD
- NPDES permit
- MD0020303
- Effective
- Permit expires
- July 2029
- Population served
- 2,961
- CWNS 2022
Rock Hall WWTP is a publicly owned wastewater treatment works in Rock Hall, Kent County, Maryland treating an average of 0.21 million gallons per day against a permitted design capacity of 0.51 MGD, serving about 2,961 residents. It discharges under NPDES permit MD0020303 (effective), which expires in July 2029, with 7 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Rock Hall WWTP.
Available with a free Klarifi account
See the full treatment train at Rock Hall WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Rock Hall WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Rock Hall WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Maryland
Chestertown · 7 mi away
0.05 MGD
Chestertown · 9 mi away
0.6 MGD
Worton · 11 mi away
0.29 MGD
Centreville · 11 mi away
0.42 MGD
Annapolis · 12 mi away
3.79 MGD
Church Hill · 13 mi away
0.07 MGD
Kennedyville · 17 mi away
0.01 MGD
Baltimore · 17 mi away
107.68 MGD
Rock Hall WWTP: 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 September 11, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms