N3950 Rd, Okmulgee, OK 74447 · Okmulgee County · Publicly Owned Treatment Works
Okmulgee WWTP is a publicly owned wastewater treatment works in Okmulgee, Okmulgee County, Oklahoma treating an average of 3.16 million gallons per day against a permitted design capacity of 10 MGD, serving about 13,721 residents. It discharges under NPDES permit OK0028134 (administratively continued), which expires in May 2022, with 101 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in October 2013.
2 treatment structures and unit processes identified at Okmulgee WWTP.
Available with a free Klarifi account
See the full treatment train at Okmulgee WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Okmulgee WWTP in EPA's ICIS system.
Latest case · Oct 2013
OKMULGEE, CITY OF WASTEWATER TREATMENT PLANT
Judicial case · CWA, NPDES Discharge without a Permit · Final Order With Penalty · Penalty $470,000 · Compliance actions $19M
Source: EPA ECHO, civil enforcement case 06-2001-0272.
Full case history with a free Klarifi account
Every action against Okmulgee WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Okmulgee WWTP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Morris · 6 mi away
0.08 MGD
Dewar · 10 mi away
0.05 MGD
Mounds · 19 mi away
0.00015 MGD
Boynton · 19 mi away
—
Weleetka · 21 mi away
0.1 MGD
Okemah · 21 mi away
0.41 MGD
Haskell · 23 mi away
0.12 MGD
Dustin · 23 mi away
—
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 19, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms