Maysville STP
1029 W Second St, Maysville, KY 41056 · Mason County · Publicly Owned Treatment Works
- Average flow
- 1.87 MGD
- Design flow
- 3.4 MGD
- NPDES permit
- KY0020257
- Effective
- Permit expires
- July 2031
- Population served
- 9,947
- CWNS 2022
Maysville STP is a publicly owned wastewater treatment works in Maysville, Mason County, Kentucky treating an average of 1.87 million gallons per day against a permitted design capacity of 3.4 MGD, serving about 9,947 residents. It discharges under NPDES permit KY0020257 (effective), which expires in July 2031, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in January 2008.
Treatment technology
One treatment structure or unit process identified at Maysville STP.
Available with a free Klarifi account
See the full treatment train at Maysville STP: 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 Maysville STP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $10,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jan 2008
MAYSVILLE, KY, CITY OF; MAYSVILLE UTILITY COMMISSION
Administrative order · CWA, NPDES Permit Violations · Unilateral Administrative Order Without Adjudication · Compliance actions $10,000
Source: EPA ECHO, civil enforcement case 04-2008-4758.
Full case history with a free Klarifi account
Every action against Maysville STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Maysville STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Kentucky
Tollesboro · 14 mi away
0.1 MGD
Mount Olivet · 17 mi away
0.03 MGD
Flemingsburg · 19 mi away
0.5 MGD
Vanceburg · 26 mi away
0.16 MGD
Falmouth · 29 mi away
0.44 MGD
Carlisle · 30 mi away
0.29 MGD
Butler · 33 mi away
0.04 MGD
Millersburg · 33 mi away
0.16 MGD
Maysville 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 May 18, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms