Grease Trap Regulations in Kansas

Overview

Kansas restaurants follow FOG (fats, oils, and grease) rules set at two levels. The Kansas Department of Health and Environment (KDHE) Bureau of Water shares the federal NPDES Pretreatment Program with the EPA. Cities run their own FOG programs for any restaurant that drains into a city sewer. Most rules sit at the city level, so what you owe depends on where you operate.

If you cook food and send wastewater to a city sewer, you almost certainly need a grease trap or grease interceptor. The size, the cleaning schedule, the permit fee, and the records you keep change from city to city. This page walks you through the basics, then covers Wichita, Kansas City, Overland Park, and Lawrence in plain terms.

Governing Authorities

The KDHE Bureau of Water Industrial Program Unit handles the state side of the federal NPDES Pretreatment Program (KDHE Bureau of Water). KDHE sets baseline pretreatment standards. Day-to-day FOG enforcement falls to your city.

The main local enforcers are:

• Wichita Public Works and Utilities Sewage Treatment Division. It runs the grease ordinance under Chapter 16.24 of the city code. Every restaurant on Wichita sewer must meet grease interceptor rules (Wichita Municipal Code).
• Kansas City (Kansas) Unified Government Utilities. It requires a grease trap at every restaurant. Inspections happen every 2 years or as needed.
• Johnson County Wastewater Department. It runs a grease management program covering Overland Park and the rest of its service area (Johnson County Wastewater).
• City of Lawrence. It requires sized grease interceptors before any new sewer hookup and bans discharge of grease or thick substances that block flow.

Key Requirements

Kansas FOG rules differ by city, but a few common standards run across the major ones.

Cleaning Frequency

• Clean grease traps when FOG and solids fill 25% of the unit.
• Johnson County Wastewater sets a standard 90-day pumping schedule for gravity interceptors.
• Wichita requires monthly measurements and quarterly pumping logs. Keep them on site and ready for an inspector.
• Many cities require pumping every 30, 60, or 90 days no matter the fill level.

Interceptor Sizing and Installation

• The 2018 International Plumbing Code, used by many Kansas cities, requires a grease interceptor or automatic grease removal device for any fixture handling grease-laden waste. That covers restaurants, hotel kitchens, hospitals, school kitchens, bars, factory cafeterias, and clubs (2018 IPC Ch.10).
• Johnson County requires gravity grease interceptors as single stand-alone units. Volume runs from 1000 to 2000 gallons.
• Hydromechanical units must hold at least 2500 lb of grease on a 90-day cleaning schedule.
• Wichita charges an annual permit fee of $180 for every restaurant. It shows up on your August or September water bill.

Record-Keeping Requirements

• Keep detailed service records for at least three years.
• Lawrence requires 3 years of cleaning and maintenance records for City staff inspection. Logs must show the date, who cleaned, where the grease went, and any interceptor defects.
• Wichita requires quarterly maintenance logs sent to the Grease Control program for automatic grease removal devices. Keep copies on site for inspectors.

Fines and Enforcement

Penalty structures vary across Kansas cities:

• Kansas City fines for poor grease trap maintenance start at $500. They climb with repeat violations and can reach thousands of dollars.
• Kansas City can issue cease-and-desist orders that close a site until you fix the problem.
• Kansas City regulators can fine, sue, or order temporary shutdowns for FOG violations.
• Skipping FOG rules can lead to service suspension and steep fines under city code.
• Johnson County may issue Administrative Citations when you break GIOP terms or sewer use rules. Cited operators have thirty days to file a hearing request and pay an advance deposit on the fine.

Cities enforce through routine inspections, monitoring, wastewater sampling, and document audits. Operating without local permits can mean big penalties. Cities can also trace sewer blockages back to the restaurant that caused them.

Most fines start with a written notice and a chance to fix the problem. Repeat issues bring bigger penalties and closer inspections. If a sewer line backs up and the city traces it to your kitchen, you can be billed for the cleanup on top of the fine.

Major City FOG Programs

Wichita

Wichita's grease control program protects sewer lines from FOG damage and clogs. Every restaurant on Wichita sewer falls under Chapter 16.24 of the city code. The program covers any place that cuts, cooks, bakes, prepares, or serves food. That includes restaurants, grocery stores, bakeries, hotels, nursing homes, churches, and schools. Most need a grease interceptor.

The annual permit fee is $180. You can install an automatic grease removal device only after getting an approved variance letter from the Grease Control program, with quarterly maintenance logs. Confirm fees and contacts with the City of Wichita Public Works and Utilities Department.

The fee shows up on your August or September water bill. Watch for it so you don't miss the charge. If you switch the kitchen layout or add new sinks, talk to the program first. New plumbing usually triggers a sizing review.

Kansas City (Kansas)

Kansas City started its FOG control program to cut sewer blockages and prevent overflows. Public sewer spills have dropped sharply since. Every restaurant needs a grease trap. Inspections run every 2 years or as needed.

Operators must install and maintain the right grease control equipment, keep records ready for inspectors, and train staff in FOG best practices. For current details, contact the Unified Government of Wyandotte County/Kansas City, Kansas Public Works office.

Overland Park / Johnson County

Johnson County Wastewater requires grease interceptors and Grease Interceptor Operating Permits (GIOPs) at every commercial restaurant. Owners apply for new builds, tenant remodels, and ownership changes. GIOPs renew each year by April 15.

Standard pumping runs every 90 days. Gravity grease interceptors must be single stand-alone units, 1000 to 2000 gallons. Sites that serve only ready-to-eat food, with no prep beyond warming, may qualify for a Low Grease Discharge Waiver (LGDW) instead of a GIOP. Coffee shops and ice cream counters often fit that mold. A full kitchen with fryers and griddles will not.

Lawrence

Lawrence restaurants must install a sized grease interceptor before any sewer hookup. New installs follow the 2018 International Plumbing Code and city changes in City Code Chapter 5, Article 8.

Set a cleaning schedule from the manufacturer's instructions and keep that record on file. If no instructions exist, use the 25% rule. Clean when 25% of a vertical core sample is solids and grease (Lawrence City Code). Keep cleaning and maintenance records for 3 years for City staff. In December 2021, the Lawrence City Commission passed Ordinance No. 9887, adding new rules for grease storage bins and violation penalties.

Frequently Asked Questions

How often do I need to clean my grease trap in Kansas?

It depends on your city and trap size. Most Kansas cities use the 25% rule. Clean when FOG and solids fill 25% of the trap. Wichita requires quarterly pumping with monthly checks. Johnson County uses a 90-day schedule for gravity interceptors. Some cities require cleaning every 30, 60, or 90 days no matter the fill level. Check with your local wastewater office and keep service records for at least three years.

Do I need a permit to operate a grease trap in Kansas?

Yes. Most Kansas cities require one. Wichita charges $180 a year per restaurant. Johnson County issues GIOPs that renew each April 15. Smaller sites may qualify for Low Grease Discharge Waivers if they serve only ready-to-eat food with little prep. Operating without a local permit can bring big fines, temporary shutdowns, and legal action. Contact your local wastewater department before you open.

What documentation do inspectors look for during FOG compliance inspections?

Kansas inspectors usually want three years of records. Logs should show cleaning dates, the service provider, the disposal site, and the volume removed. Wichita wants monthly measurements and quarterly pumping logs sent to the Grease Control program each quarter. Lawrence wants the cleaner's name and notes on any defects. Many cities also want a current permit, sizing calculations sealed by a Kansas PE, staff training records, and best management practices documents. Keep everything on site. If you can't produce records, you can fail an inspection even with a clean trap.

Find Grease Trap Service in Kansas

Reliable, compliant service is key for Kansas restaurants under city FOG rules. Our directory lists 11 qualified providers across Kansas, including specialists in Wichita, Kansas City, Overland Park, Lawrence, and other areas. They offer cleaning, maintenance, installation, emergency response, and documentation help. Visit our Kansas grease trap service directory to connect with pros who know state plumbing codes and city FOG programs.