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Wastewater

Phone: 913-715-8500

11811 S. Sunset Drive, Suite 2500, Olathe, Kansas 66061

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Grease Management: Interceptor Design, Inspection, and Operation Requirements

My Government Online (MGO) Electronic Application, Plan Review and Inspection software launches for JCW on MAY 1, 2017.  Please see our article homepage and create your customer portal account.

The following are requirements for new grease interceptors installed at food service facilities:

Design

  1. The grease interceptor must be of sufficient size to provide a 30 minute detention of the peak wastewater flow. The minimum size for a grease interceptor is 1,000 gallons. The maximum size is 2,000 gallons. The interceptor location must allow for pumping and inspection access. Indoor grease interceptors or grease traps are not permitted in new facilities.
  2. An engineer shall submit grease interceptor sizing calculations on plans and indicate sizing method used (see ​​Interceptor Sizing information below).
  3. The vent line from the sample port riser on the interceptor outlet must be connected to the building waste vent piping.
  4. Grease Waste Fixtures:
    • Garbage disposals or grinders are prohibited in new food service facilities.
    • The following plumbing fixtures (if applicable) MUST NOT be connected to a grease interceptor:
      • Handwashing sinks
      • Drains receiving condensate only
      • Bar sinks not receiving significant quantities of grease
    • The following plumbing fixtures (if applicable) MUST be connected to a grease interceptor:
      • Low temperature chemical (e.g., chlorine) sanitizing dishwasher
      • High temperature (greater than or equal to 180°F) sanitizing dishwashers which must have a cold water solenoid-operated valve or similar device that mixes cold water with the discharged hot water from the machine
      • Three (3) compartment sinks
      • Mop sinks
      • Floor drains in kitchen areas
      • Wok drains

​​Interceptor Sizing

A grease interceptor must provide a 30 minute peak hydraulic detention time as determined by the plumbing fixtures or piping connected to the interceptor. The following table is used to size grease interceptors in the Johnson County Wastewater sanitary sewer service area:

Chart

Method 1

All kitchen drains must be plumbed to the grease interceptor. When using the table above, only use sinks and dish machines in the calculation. Floor drains and mop sinks do not produce a sufficient quantity of water to be added to the calculation, but must be plumbed to the interceptor.

For dish machines, multiply the result by a factor of 0.3 to compensate for the time that the machine is not discharging wastewater.

The interceptor is sized using the drainage gallons per minute multiplied by a 30 minute detention time.

Example: For a two (2) inch drain discharging to a grease interceptor from a three (3) compartment sink and a 2.5 inch drain from a dish machine discharging to the grease interceptor, the calculation is as follows:

22.5 gpm x 30 minute detention time = 675 gallons for the three (3) compartment sink

30 gpm x 30 minute detention time = 900 gallons x 0.3 factor = 300 gallons for the dish machine

675 gallons + 300 gallons = 975 gallons for the interceptor. Round up to 1,000 gallons

Method 2

The pipe diameter after the last grease waste fixture is used to determine the size of the grease interceptor. Pipe shall be installed at one (1) percent slope maximum. Pipe slope shall be indicated on interior plumbing drawings.

Example: For a 4 inch line downstream from the three (3) compartment sink and the dish machine discharging to the grease interceptor, the calculation is as follows:

45 gpm x 30 minute detention time = 1,350 gallons for the interceptor. Round up to 1,500 gallons.

The minimum size for a grease interceptor is 1,000 gallons and 2,000 gallons is the maximum size.

If a larger capacity is needed, grease interceptors shall be connected in series and must be approved by Johnson County Wastewater.

Grease Interceptor Detail

See Commercial Permit Site Plan Example for grease interceptor installation details [pdf]

Please modify the detail to reflect the required volume and piping arrangement for the project.

Site Location Property Map and Key Plan:

A Site Location Property Map showing the entire property, property lines, and building outline is required on the Permit Plan Sheet.  If there is more than one tenant in the building, a Key Plan showing which space(s) within the building that will be used is required.  

  1. Go to http://maps.jocogov.org/ims/
  2. Enter the address in the “search for location” box above the map.
  3. Make sure only the following “Layers” are checked:  
    1. “Parcel Outlines” – under “Parcels”
    2. “Building Footprints”- under “Planimetrics”
    3. “JCW Sewer Lines” – under “Utilities”
  4. Make sure the “Layer Transparency” is set to 0%. 
  5. In the upper right hand corner find ‘Satellite’ with a drop down arrow, change the base map to “Google Map.”  Due to clarity issues, do not use a satellite base map.  The “Identify Results” pop up box may need to be moved.   
  6. Select the “Print” option.  A window with the selected view will appear in a pop up.
  7. In the pop up, move the map around and zoom in/out as required to show the following:
    1. The entire building
    2. The entire lot
    3. The nearest cross streets with labels
    4. The sanitary sewer main]
  8. Print or save the image and add to the requested drawing sheet.
  9. If a key plan is required, show all tenant spaces within the building and indicate which space this tenant will occupy.

Inspections

  • Interior Piping
    • Johnson County Wastewater shall inspect the interior plumbing fixtures that are attached to the interceptor before the plumbing is covered. Please call Johnson County Wastewater's Permit Group at 913-715-8520 to schedule an inspection of the interior plumbing before the piping is covered.
  • Interceptor
    • Johnson County Wastewater shall inspect the installed interceptor and exterior piping prior to backfilling and after inspection of the interior piping. Please call Johnson County Wastewater's Permit Group at 913-715-8520 to schedule an inspection.

Operating Permit

Prior to discharging wastewater to a grease interceptor, a food service facility shall obtain their grease interceptor operating permit from Johnson County Wastewater. This permit will be issued after all construction is complete and Johnson County Wastewater has determined that the interceptor and facility complies with the Johnson County Code of Resolutions:

Please call Johnson County Wastewater's Environmental Compliance Manager at 913-715-6920 two (2) weeks prior to opening to schedule a site visit which is required for permit issuance.

All food service facilities in the State of Kansas MUST also obtain a food service license from the Kansas Department of Agriculture (KDA) at 785-296-5600 before opening.

Grease Management: Grease Waste Plumbing, Interceptor Design and JCW Inspections

Grease Management: Grease Waste Plumbing, Interceptor Design and JCW Inspections

Johnson County Wastewater (JCW) permitting is required for all Food\Beverage Service\Prep Facilities (FSF) and for interceptor installations, replacements and repairs. JCW’s FOG\Commercial Review Team may be contacted at 913-715-8520 for information about JCW’s permitting and inspection processes.

 

Grease Waste Plumbing

The following are requirements for fixture plumbing in Food Service Facilities in JCW's service area: 

  1. Grease Waste Fixtures:

a. Toilets, urinals and similar domestic waste fixtures SHALL NOT be connected to the interceptor.

b. Garbage disposals or grinders are prohibited in new food service facilities.

c. The following fixtures MUST NOT be connected to the grease interceptor:

i. Drains receiving condensate.

ii. Drink station and ice machine drains.

iii. Bar sinks not receiving significant quantities of grease.

iv. Hot and cold well drains.

v. Hand wash sinks in general.

d. The following fixtures MUST be connected to the grease interceptor:

i. Dishmachines: Low temperature chemical (e.g., chlorine) sanitizing.

ii. Dishmachines: High temperature sanitizing. Must include a device to mix cold water with the discharge to reduce the discharge temperature to 140° F or less.

iii. Two and three compartment sinks, prep sinks, pre-rinse sinks, dump sinks, etc.

iv. Mop sinks, utility sinks.

v. Kitchen equipment drains (including the floor sinks serving the equipment) - wok drains, tilt kettles, ice cream\custard\etc production machines, ice cream dipper wells, etc.

vi. Floor and trench drains in grease-prone prep and cooking areas.

e. Connect hand wash sinks to the sanitary line in general. Hand wash sinks may be connected to grease waste when the sanitary line is not in close proximity.

  1. Interceptor venting must be connected to the building waste vent piping in accordance with the JCW accepted unit detail and the plumbing code.

 

Gravity Grease Interceptors (GGIs) General

  1. Gravity grease interceptor (GGI) installations for food\beverage service\prep facilities (FSFs) permitted for use in Johnson County Wastewater’s (JCW’s) service area shall be a single stand-alone unit with a minimum 1000 gallon and maximum 2000 gallon volume. Units in parallel shall not be used.  Units in series may generally not be used.
  2. A 90-day pumping and cleaning frequency is standard.
  3. For a standard concrete gravity grease interceptor, use JCW's Standard Concrete Gravity Grease Interceptor Detail and modify the detail to reflect the required volume and piping arrangement for the project.
  4. Only Non-concrete Gravity Interceptor (NCGGI) Units accepted by JCW may be permitted and used for new installations and replacements in JCW’s service area. See the JCW Accepted Non-Concrete Gravity Grease Interceptor Unit List for accepted unit(s) and contact JCW to obtain the current JCW accepted detail before applying for the JCW permit.  FSF projects with a NCGGI will be accepted for review only if the proposed interceptor unit has been accepted by JCW.  Refer manufacturers to the JCW Non-Concrete Gravity Grease Interceptor Unit Acceptance Criteria for Manufacturers for unit requirements and review information.

Gravity Grease Interceptor (GGI) Sizing

1. For all new interceptors and replacements, a Kansas PE shall determine the Drainage Fixture Units (DFUs) connected to the gravity interceptor in accordance with JCW grease waste plumbing standards and in correlation with UPC criteria and size the interceptor as follows:

a. DFU values for each fixture directly connected to the interceptor (including floor and trench drains) shall be included in the calculations. Each fixture shall be assigned value based on “Fixture Size” (per UPC Table 709.2) and as noted in the Drainage Fixture Unit (DFU) Value Calculations Table.

b. The DFU load of an indirect waste receptor (e.g. floor sinks) receiving the discharge of indirectly connected fixtures shall be the DFU value for the indirect waste receptor except as noted herein.

c. The DFU value for equipment with intermittent drainage (e.g. use the manufacturer’s rated “Flow” for commercial dishmachines) shall be assigned fixture unit values (per UPC Table 702.2(b)) as noted in the DFU Calculations Table below.

d. DFUs for equipment with continuous drainage (e.g. water-cooled wok range) shall be assigned 2 DFUs for each gallon per minute (GPM) of rated flow (per UPC Section 709.3) and added to the DFU Calculations Table.

e. Please see the  Drainage Fixture Unit Value (DFU) Calculations Table format and unit DFUs per Fixture Size or Flow.  Include a copy of the table (with the required unit DFUs per Fixture Size or Flow and including all project Fixture Description labels and counts (Qty)) with the sealed interceptor sizing calculations.

2. Gravity interceptor volume shall be sized using the calculated DFUs and the following Gravity Grease Interceptor Volumes table (per UPC 1014.3.6) with 1000 gal minimum and 2000 gal maximum:

Gravity Grease Interceptor Volumes

Drainage Fixture Units (DFUs)

Interceptor Volume (gal)
Up to 35 1000
Up to 90 1250
Up to 172 1500
Up to 216 2000

3. Where DFUs for a future FSF(s) are unknown, the interceptor shall be sized based on the maximum DFUs allowed for the pipe size (per UPC Table 703.2) connected to inlet of the interceptor. An inlet pipe size of 4 inches corresponds with up to 216 DFUs and a 2000 gallon interceptor. If the pipe size and corresponding number of DFUs may exceed 216, please contact JCW’s FOG\Commercial Review team at 913-715-8520 to discuss options.

 

Hydromechanical Grease Interceptors (HGIs) General

  1. Only Hydromechanical Grease Interceptor (HGI) units accepted by JCW may be permitted and used for new installations and replacements in JCW’s service area. Please see the JCW Accepted Hydromechanical Grease Interceptor Unit List for accepted HGI units and contact JCW to obtain the current JCW HGI Unit Installation Detail for the selected unit.
  2. FSF projects will be accepted for review only if the proposed interceptor unit has been accepted by JCW. Refer manufacturers to the JCW Hydromechanical Grease Interceptor Unit Acceptance Criteria for Manufacturers for unit requirement and review information.
  3. A 90-day pumping frequency is standard.
  4. A minimum 2500 lb interceptor grease capacity is required for facilities with grease production of up to 2500 lbs in the 90-day pump period.
  5. A single larger unit with capacity meeting the calculated grease production estimate is required where grease production exceeds 2500 lbs in 90 days.

Hydromechanical Interceptor (HGI) Sizing

1. For a FSF with a known FSF operator:

Provide grease production calculations (sealed by a Kansas PE) using the proposed number of meals per day provided by the FSF owner\operator in the JCW Food\Beverage Facility Supplemental Application and the grease production value based on the type of FSF. Select the Grease Production Value from Table 8-3 and refer to the calculation example below. Contact a JCW FOG\Commercial Group member at 913-715-8520 to discuss Restaurant Type for facilities not found in the Examples Table.

Table 8-3 is reprinted with permission from ASPE Plumbing Engineering Design Handbook, Volume 4. (C) 2016, American Society of Plumbing Engineers. All rights reserved.

Table 8-3 Example Grease Production Values for Restaurants
Restaurant Type Grease Production Values Examples

Low Grease Producer

0.005 lbs/meal (no flatware)

Elementary cafeteria, grocery meat department, hotel breakfast bar, sub shop, sushi, take and bake pizza
0.065 lbs/meal (with flatware)

Medium Grease Producer

0.025 lbs/meal (no flatware) Cafe, coffee shop, convenience store, grocery deli, Greek, Indian, Japanese, Korean, Thai, Vietmanese
0.0325 lbs/meal (with flatware)
High Grease Producer 0.035 lbs/meal (no flatware) Full-fare family, fast-food hamburger, hamburger bar and grill, German, Italian, fast-food Mexican
0.0455 lbs/meal (with flatware)
Very High Grease Producer 0.058 lbs/meal (no flatware) Full-fare BBQ, fast-food fried chicken, full-fare Mexican, steak and seafood, Chinese, Hawaiian
0.075 lbs/meal (with flatware)

Grease Production Calculation Example : A full fare BBQ FSF serving approximately 350 meals per day on washable dishes and flatware with a 90-day pump schedule. Select the “Very high grease producer (with flatware)” value from Table 8-3 and calculate the daily grease load as follows: 350 meals per day × 0.075 lbs per meal = 26.25 lbs of grease per day. For a 90-day pump schedule at 26.25 lbs per day, 2362.5 lbs of grease storage capacity is required. The calculated capacity is less than JCW minimum 2500 lbs; therefore, use a minimum 2500 lb capacity HGI unit.

  1. For a future FSF with an unknown FSF operator:

a. Provide grease production calculations based on square footage of the entire space. At minimum, use an average of 0.171 meals per square foot per day, a grease production value of 0.0455 lbs per meal and 90-day pump out.

b. A minimum 2500 lb grease capacity unit is required for a space up to 3500 square feet.

c. A single larger unit is required if the estimated grease production exceeds 2500 lbs in 90 days.

  1. Hydromechanical units may not be used for multiple tenant Common Interceptor installations.

 

Interceptor Decommissioning

A FSF with an existing interceptor in proper operating condition that is not required to have an interceptor (or a non-FSF tenant moving in to a former FSF space) must request JCW evaluation of the following options:

1. Request a Pumping Variance to reduce pumping frequency. Or,

2. Temporary Decommissioning. If JCW has verified the interceptor is in proper operating condition, the Building Owner and FSF may request temporary permanent decommissioning of the interceptor. All temporarily decommissioned interceptors shall be pumped on reduced pumping frequency.

3. Permanent Decommissioning. Interceptors that are not in proper operating condition must be permanently decommissioned.

Contact JCW’s FOG\Commercial Review team at 913-715-8520 to discuss options and for complete requirements.

 

JCW Inspections

  • Existing Interceptors - A pre-application inspection is required for all facilities with an existing interceptor. Contact JCW’s FOG\Commercial Review team at 913-715-8520 to schedule the inspection.
  • Interior Grease Waste Piping - Johnson County Wastewater shall inspect the interior plumbing fixtures attached to the interceptor before the plumbing is covered as noted on the JCW Permit. Schedule this inspection through the project record at mygovernmentonline.org.
  • New, Replacement or Repaired Interceptors - Johnson County Wastewater shall inspect the interceptor, interceptor repairs and exterior piping prior to backfilling and after inspection of the interior piping at several stages of the installation or repair as noted on the JCW Permit. Schedule these multiple inspections through the project record at mygovernmentonline.org.
  • Operating Permit Inspection – Two weeks before the opening of the FSF, schedule the required FSF Opening Inspection – BMPs and Education through the project record at mygovernmentonline.org.

Grease Management: Best Management Practices

Prevention is Best

Protecting public health and safety is a primary responsibility of Johnson County Wastewater. Sewer blockages and subsequent sewage spills pose a threat to public health and safety that can be prevented when food service facilities follow the Best Management Practices (BMPs) presented here.

Johnson County Wastewater has determined that the most effective way to minimize Fats, Oils, and Grease (FOG) accumulation in sewers is to prevent the introduction of FOG into the sanitary sewer system in the first place. Follow these tips to help control and minimize the introduction of FOG into sanitary sewers:

  • Post "No Grease" signs above sinks and on the front of dishwashers and/or floor sinks.
  • Wipe pots, pans, dishware, and work areas with paper towels prior to washing, and dispose the paper towels in the trash.
  • Dispose food waste directly into the trash. Garbage grinders/disposals are prohibited.
  • Use absorbents or other materials, like paper towels, to pick up spills before mopping the floor, then dispose of the towels in the trash.
  • Collect cooking oil waste and store in drums or barrels for recycling.
  • Keep grease emulsifying agents out of the sink and drain.

Documents

Grease Management: All About Fats, Oils, and Grease

Notice to Customers:

Due to COVID-19 operational restrictions impacting food service facilities, Johnson County Wastewater temporarily suspended enforcement of grease interceptor annual permit renewals, operational violations and pumping violations. We will return to regular enforcement procedures as these restrictions are eased. Facilities with violations will be provided with written notices outlining updated compliance requirements.” For additional information please contact [email protected]

What is FOG?

FOG is a combination of fats, oils, and grease. FOG includes cooking oil, animal fat and lard, grease, butter, tallow, shortening, and margarine which are all used in food processing and in the preparation of food. Kitchen wastes, along with water that has been used to wash kitchen equipment and floors, contain FOG.

Protecting public health and safety is a prime responsibility of Johnson County Wastewater (JCW). Sewer blockages and subsequent sewage spills pose a threat to public health and safety which can be prevented with proper grease management. When FOG or food and wastewater containing FOG are poured down the drain, it cools and solidifies on the walls of the sewer pipes, restricting or clogging the wastewater flow. This can result in a wastewater backup into homes and businesses or discharge to the environment. The most effective way to minimize FOG accumulation in sewers is to prevent the introduction of FOG into the sanitary sewer system in the first place. To realize this goal, JCW has developed the Grease Management Program to regulate food service facilities.

Who Needs a Project Review?

All facilities serving or producing any type of beverage or food are required to have a project review.  The Johnson County Wastewater sanitary sewer system serves most cities in Johnson County and parts of Olathe. Visit aims.jocogov.org and scroll to the bottom of the page to find out if your business is located in the JCW service area. Enter your address in the box and select "GO." At the top of the page in the "Search for:" box will be the address you entered. Click "Go" again. Your sewer provider will be listed in the Utility Information section.​ Complete the applicable Commercial Application with Food/Beverage under the Johnson County Wastewater Permit section at www.mygovernmentonline.org.  In addition to completing the Application, upload the following documents:

  1. Kitchen and plumbing drawings with all equipment and plumbing fixtures clearly shown and labeled
  2. Food & Beverage Supplemental Application
  3. Copy of the menu
  4. Copy of the local Food Service Facility Operator’s driver’s license
  5. Existing interceptor and/or plumbing correction drawings (see Tenant Finish section below)
  6. When an interceptor is required, interceptor installation drawings including sizing calculations (see the Grease Interceptor Design, Inspection, and Operation Requirements page for additional information)

Please choose one from the following project applications listed under the Johnson County Wastewater Permit section on the My Government Online website:

  1. Commercial Application with Food/Beverage Service (New Construction)

    1. Submit all information listed above.
    2. Submit all items required in the Commercial Sanitary Sewer Permit Checklist.
  2. Commercial Application with Food/Beverage Service (Tenant Finish/Remodel) - Existing buildings

    1. Submit all information listed above.
    2. Submit all items required in the Commercial Sanitary Sewer Permit Checklist.
    3. Site Location Property Map and Key Plan (see the Grease Interceptor Design, Inspection, and Operation Requirements page for information)
    4. Adding a grease interceptor – The field verified flow line elevation of the existing plumbing header at the location the grease interceptor outlet connects to existing building plumbing or service line is required to be labeled.  This information shall be provided by the contractor performing the field verification and is required with the first submittal.
    5. Reusing the existing grease interceptor - The grease interceptor must be inspected by Johnson County Wastewater prior to the first permit submittal.  Contact the Permit Group at 913-715-8520 to schedule an inspection by a JCW inspector.  The interceptor must be pumped and cleaned at the time of the inspection by a licensed sanitary disposal contractor (pumper) of your choosing.  The interior plumbing connections to the interceptor must also be inspected at the time the interceptor is inspected.  Running water must be available in the space.  If water is not available, a separate pump out and JCW inspection will be required when water is available.  JCW will provide a list of items found during inspection to be included with the plan submittal for permitting.  NO CORRECTIONS MAY BE PERFORMED UNTIL JCW HAS ISSUED THE PERMIT.
  3. Commercial Application with Food/Beverage Service (Change of Owner) - No change in plumbing or kitchen equipment

    1. Kitchen and plumbing drawings with all equipment and plumbing fixtures clearly shown and labeled
    2. Copy of the menu
    3. Copy of the local Food Service Facility Operator’s driver’s license
    4. Site Location Property Map and Key Plan (see the Grease Interceptor Design, Inspection, and Operation Requirements page for information)
    5. Reusing the existing grease interceptor - The grease interceptor must be inspected by Johnson County Wastewater prior to the first permit submittal.  Contact the Permit Group at 913-715-8520 to schedule an inspection by a JCW inspector.  The interceptor must be pumped and cleaned at the time of the inspection by a licensed sanitary disposal contractor (pumper) of your choosing.  The interior plumbing connections to the interceptor must also be inspected at the time the interceptor is inspected.  Running water must be available in the space.  If water is not available, a separate pump out and JCW inspection will be required when water is available.  JCW will provide a list of items found during inspection to be included with the plan submittal for permitting.  NO CORRECTIONS MAY BE PERFORMED UNTIL JCW HAS ISSUED THE PERMIT.
  4. Commercial Application with Food/Beverage Service (with a Common Interceptor) - Serve multiple tenant spaces. 

    1. Both building owners and tenants use this application for all spaces with access to the common interceptor.
    2. Submit all information listed above.
    3. Submit all items required in the Commercial Sanitary Sewer Permit Checklist.
    4. Adding a grease interceptor – The field verified flow line elevation of the existing plumbing header at the location the grease interceptor outlet connects to existing building plumbing or service line is required to be labeled.  This information shall be provided by the contractor performing the field verification and is required with the first submittal.
    5. Reusing the existing grease interceptor - The grease interceptor must be inspected by Johnson County Wastewater prior to the first permit submittal.  Contact the Permit Group at 913-715-8520 to schedule an inspection by a JCW inspector.  The interceptor must be pumped and cleaned at the time of the inspection by a licensed sanitary disposal contractor (pumper) of your choosing.  The interior plumbing connections to the interceptor must also be inspected at the time the interceptor is inspected.  Running water must be available in the space.  If water is not available, a separate pump out and JCW inspection will be required when water is available.  JCW will provide a list of items found during inspection to be included with the plan submittal for permitting.  NO CORRECTIONS MAY BE PERFORMED UNTIL JCW HAS ISSUED THE PERMIT.

Low Grease Discharge Waiver (LGDW) 

To be considered for a Low Grease Discharge Waiver (LGDW), the facility must meet the following criteria:

  1. Serves only ready-to-eat foods with no preparation at the facility, other than warming, including, but not be limited to: scoop-only ice cream shops, sandwich shops, popcorn stands, hot dog rollers, etc.
  2. Prepares only uncooked or unbaked food or meals that will be taken from the facility and cooked or baked at another location; or baked goods such as, but not limited to, cookies and pretzels.

The LGDW permit must be renewed annually and LGDW facilities will be inspected routinely.

Common Interceptor 

A Common or Shared Interceptor is a single interceptor that could serve multiple Food or Beverage facilities in one building.  The interceptor and piping shall be sized during the initial permitting process.  The Building owner and tenant shall submit the JCW Commercial Application with Food/Beverage Service (with a Common Interceptor) as indicated above. The information from the application will be incorporated into legal documents prepared by JCW. Both the building owner and tenant will renew the documents annually.

Annual Operating Permit Renewal

Each facility will receive an Operating Permit with Commercial Permit issuance.  The Operating Permits for all grease interceptors and facilities operating under low grease discharge waivers expire on April 15th each year and must be renewed annually.  Facilities currently permitted by Johnson County Wastewater will receive a notice prior to permit expiration with renewal materials and instructions. 

Permits are valid only for the year in which they are issued.  There are no provisions for the proration of a license or refunding the licensing fees.

Grease Interceptor Pumping Variances

Interceptor pumping and cleaning is required at a minimum of once every 90 days for most establishments. A variance may be considered if you believe your interceptor requires less frequent pumping by completing the following steps. 

Once the application and fees have been submitted, the operator must have the interceptor pumped and cleaned while Johnson County Wastewater is present to begin the variance process.  Please call the Johnson County Wastewater Environmental Compliance Managers at 913-715-8520 to schedule an inspection.