Grease Trap Cleaning Irving TX and the Water Utilities liquid waste rules
Grease oversight here sits with Irving Water Utilities, through its Environmental Compliance section. The rules live in Chapter 41 of the Irving Code of Ordinances, titled Liquid Waste Transport and Management, and they apply to food service, food processing, food manufacturing and other significant generators of fats, oils and grease. Those businesses must install, operate and maintain a grease trap or interceptor sized under the locally adopted plumbing code.
City inspectors work from a 90-day minimum cleaning frequency and the 25 percent rule: once floating grease and settled solids take up about a quarter of the unit, it is due, even if the calendar says otherwise. A full pump-out, not a skim, is the standard, and that is how we approach every grease trap pumping job here.
Only a city-permitted liquid waste transporter may service your device. Haulers need a TCEQ registration, insurance and a city transportation permit, and they upload each manifest to the city's transport portal soon after service. If an unpermitted hauler pumps your trap, that manifest cannot be uploaded, and the city may treat the service as if it never happened.
On your end, keep a copy of every trip ticket on the property for five years. Inspectors can ask for it during a visit, and missing paperwork is a common reason for a notice of violation. Enforcement can escalate to citations, a held Certificate of Occupancy, surcharge sampling or, in serious cases, utility shutoff. The city also promotes the regional Defend Your Drains North Texas campaign and runs a holiday cooking oil roundup for residents.