Grease Traps

What are Grease Traps?

Grease interceptors, or “grease traps” as they are commonly called, prevent certain materials from discharging to the sanitary sewer. When grease and solids enter the sanitary sewer, they can cause blockages which can result in sanitary sewer overflows (SSO’s). Often, SSO’s reach storm drains and flow to creeks, streams and rivers. The law prohibits SSO’s and it is the city’s responsibility to prevent blockages from occurring.

Requirements for Food Establishments

Food establishments that offer high fat menu items which include meat and dairy products, soups and stews, gravies and sauces, bakery items and salad (raw and prepared) are required to have grease interceptors.

The City of Grand Prairie requires that all of the plumbing fixtures in each food preparation and utensil washing area be connected to a waste line that will flow through a grease interceptor. In accordance with the International Plumbing Code (IPC) the interceptor will be sized by calculating the TOTAL FLOW RATE of the three compartment sink(s), prep sink(s)and automatic dishwasher(s)in the facility.

Download Grease Interceptor Sizing Requirements(PDF, 161KB)


On August 14, 2007, new regulations regarding the frequency of service for grease interceptors was approved by the Grand Prairie City Council.

Grease interceptor service requirements for establishments that prepare or manufacture food products are as follows:

  • Food manufacturers – monthly
  • Establishments that offer fried food products – monthly
  • Fast food restaurants - monthly/quarterly (determined by meals served)
  • Full service restaurants – quarterly
  • Childcare facilities – biannually

The maintenance frequency is also shown on the health permit that is issued to each food service establishment.

If your business would like to request a waiver from the grease trap pumping frequency in accordance with Article IX - Section 13-154. Schedule of Service Required for Generators (d), then a formal written request must be submitted to the Public Health and Environmental Quality Director. View Waiver for Grease Trap Pumping Frequency Information(PDF, 45KB) .


Each facility must follow the City of Grand Prairie’s service guidelines in disposing of their grease trap waste.

  • Only use a liquid waste hauler that holds a valid permit with the city. Please request to see their permit. View Permitted Liquid Waste Haulers(PDF, 128KB)
  • The food establishment manager or owner must sign the manifest from the transporter.
  • The gold copy (transport receipt) should be given to the food service manager or owner immediately after the grease trap is serviced.
  • The pink copy (disposal receipt) should be returned to you from the transporter within 15 days of the maintenance of your grease trap. (The food service establishment should have both copies of the receipts on file at the establishment.)
  • The food establishment manager or owner must keep both copies for at least two years and must be available for inspection at all times.

Public Health and Environmental Quality Department staff will strictly enforce this ordinance. Failure to maintain grease interceptors and/or maintain records may result in either judicial proceedings and/or the facility may be required to install an industrial waste sample point and pay monitoring fees.