Belt Line Restaurant Row is the densest restaurant corridor in North Texas — 170+ concepts across roughly a mile of Belt Line Rd. Every one has a grease trap. Most owners handle them wrong.
Here is what gets missed.
The 25% rule
Addison's grease trap ordinance follows the standard TCEQ / Dallas approach: if grease + solids in the trap exceed 25% of the trap volume, it must be pumped. Not "when the health inspector shows up." Not "at the end of the quarter." Immediately.
Most kitchen managers do not measure. They should — with a dipstick — monthly.
Pumping is not the same as jetting
Pumping the trap removes what is in the trap. It does not clean the line from the sink to the trap. That is a separate service — hydro-jetting.
A trap pumped every 90 days but with a line never jetted will still back up. Grease glazes the pipe wall between service intervals.
The 6-month jetting rhythm
For a typical Belt Line Restaurant Row concept:
- Grease trap pump — every 90 days minimum (more if you fry)
- Trap-to-city line jet — every 6 months
- Sink-to-trap line jet — every 6 months
We run 6-month maintenance contracts that bundle these at a rate lower than one-off emergency service.
Manifest documentation
Grease trap pumping requires manifest documentation for the City of Addison — proof of proper disposal at a licensed processor. This is inspection-critical. We provide it after every service.
Drain vs. grease line
The 3-compartment sink drain, the mop sink, and the floor drains generally do NOT go through the grease trap — they go directly to the sewer. But grease from a wok range that misses the hood filters ends up in every floor drain in the kitchen. Jet those on the same schedule.
Signs of a coming failure
- Slow drainage at any sink in the kitchen
- Odor at floor drains or mop sinks
- Backup at the trap outlet during peak service
- Standing water in mop sink between uses
Fix these before the first backup. A shutdown for a Category-3 sewage cleanup (commercial sewer backup) costs a day of service plus health inspection follow-up.
The BMP checklist
- Scrape and dry-wipe pans before wash
- Strain fryer oil into sealed containers, not down the drain
- Insist front-of-house does not pour milk / cream / soup at bar sinks
- Post "no cooking oil down drains" signage in the wash area
- Clean hood filters weekly (kick-back grease loads the floor drains)
Most Belt Line owners we work with know these already. What gets missed is documentation and jetting rhythm. Both are fixable.
Call our commercial plumbing team if you want a walk-through of your kitchen's grease-and-drain profile — no charge for existing maintenance customers.
Belt Line Plumbing expert insight
This guide reflects what our licensed Texas RMP plumbers see on real local-specific calls across Addison, Farmers Branch, Carrollton, and the greater Dallas North Tollway corridor. Belt Line Plumbing Co. has served the Addison area since 2007, with 412+ five-star reviews from north Dallas homeowners, property managers, and Belt Line Restaurant Row operators.
Local factors that affect the advice above: North Texas expansive clay soil drives most residential slab and sewer failures; Dallas Water Utilities supply water at 8–11 grains of hardness per gallon shortens every water heater and tankless system without a softener; and the February 2021 Winter Storm Uri freeze exposed attic supply lines across almost every 1970s–2000s Addison home. If your situation includes any of these local realities, factor them in before deciding between repair, replacement, or a preventive upgrade.