N2850 Rd, Chickasha, OK 73018 · Grady County · Publicly Owned Treatment Works
Chickasha WWTP is a publicly owned wastewater treatment works in Chickasha, Grady County, Oklahoma treating an average of 1.41 million gallons per day against a permitted design capacity of 4.5 MGD, serving about 18,210 residents. It discharges under NPDES permit OK0026018 (effective), which expires in December 2026, with 6 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 2006.
2 treatment structures and unit processes identified at Chickasha WWTP.
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See the full treatment train at Chickasha 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 Chickasha WWTP in EPA's ICIS system.
Latest case · Mar 2006
Chickasha City of Wastewater Treatment Plant
Administrative order · CAA, Prevention of Accidental Release/Risk Management Plans (RMPs) · Final Order With Penalty · Penalty $840
EPA's description of the case:
“Failed to comply with the Risk Managment Plan”
Source: EPA ECHO, civil enforcement case 06-2006-3540.
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Every action against Chickasha WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Chickasha WWTP.
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0.07 MGD
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0.39 MGD
Cyril · 19 mi away
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Tuttle · 19 mi away
0.05 MGD
Minco · 19 mi away
0.03 MGD
Lindsay · 23 mi away
0.1 MGD
Newcastle · 24 mi away
0.52 MGD
Union City · 24 mi away
0.1 MGD
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 March 14, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms