Grease Trap Requirements
Overland Park, KS

FOG Compliance in Overland Park, KS

Food service establishments in Overland Park operate under a combination of federal EPA pretreatment standards, Kansas state plumbing code, and city-level FOG ordinances. Together these rules determine how grease traps must be sized, how often they must be pumped, and what happens when a restaurant falls out of compliance.

Pumping frequency is the compliance rule restaurant owners interact with most often. In Overland Park, the rule is: Per 25% rule. This aligns with the 90-day US median enforced by most major cities. The city follows the International Plumbing Code (IPC) for trap sizing and installation. Under Section 1003.3.4, which sizes traps by drainage fixture unit counts, grease interceptors installed in Overland Park must meet minimum capacity thresholds based on the fixtures connected to them — 3-compartment sinks, dishwashers, pre-rinse stations, wok stoves, and floor drains on the cook line. The local minimum trap size is: 1,000 gallons (Johnson County Wastewater requirement for gravity grease interceptors; max 2,000 gallons single unit).

Overland Park requires a dedicated FOG permit for any food service establishment generating fats, oils, and grease. The annual permit fee is Annual Grease Interceptor Operating Permit (GIOP) renewal required by April 15; exact fee not publicly listed — contact Johnson County Wastewater. The permit is separate from, and in addition to, the plumbing permit required at installation. Violations carry maximum penalties of Administrative citation with advance deposit of administrative fine required within 30 days; exact amount set by Johnson County code . Fines typically escalate with repeat violations, and severe discharges that cause sanitary sewer overflows can trigger federal Clean Water Act penalties layered on top of local fines.

Overland Park enforces the 25 percent rule: grease traps must be pumped before the combined FOG and settled solids reach 25 percent of the trap's total liquid depth. Inspectors measure the depth with a sludge judge or dipstick, typically at surprise visits. Exceeding the threshold at inspection triggers a notice of violation and mandatory emergency pump-out, regardless of the scheduled pumping cycle. Routine inspections by Johnson County Wastewater; frequency based on compliance history. Establishments must maintain pumping logs, hauler manifests, and inspection reports on-site — missing records is itself a violation in most enforcement actions. Enforcement authority rests with the Johnson County Wastewater / City of Overland Park, which handles permit issuance, inspections, and hauler licensing.

For a deeper explanation of the rules this city enforces, read our guides on how grease traps work and the 25/50 pumping rule.