Preventing Grease Line Backups In Restaurants
Backups in the lateral line between the kitchen and the grease trap are the single most expensive plumbing event a restaurant faces. They close the kitchen, contaminate stored product, and trigger health-department visits.
Quarterly hydro-jetting
Pressurized water scours the grease cap off the top of the pipe. Done quarterly, it keeps the line at full diameter.
Daily bioaugmentation
A nightly metered dose of facultative bacteria from the prep sink works downstream to digest the FOG layer between jettings.
Train staff on what goes down the drain
Tomato sauce, dairy, and oil-based dressings are as bad as straight grease for trap loading. Scrape plates first.
Why it matters
A clear grease trap does not prove the kitchen branch line is clear. Deposits can remain at fittings, poorly pitched sections, and connections upstream of the trap. Track where drainage slows and which fixtures are affected so maintenance targets the restriction rather than just the nearest accessible drain.
Practical steps
Keep strainers seated and empty captured solids into the trash. Confirm that cleanouts remain accessible instead of hidden behind storage or equipment. Record sluggish discharge, gurgling, and water rising in nearby floor drains when sinks empty. Check the dosing reservoir, tubing, and pump operation; a powered pump does not confirm product is reaching the drain. Keep trap pumping records separate from line-cleaning records so neither task gets mistaken for the other.
When to call a professional
Call a drain contractor when drainage slows again after cleaning, nearby fixtures back up together, or wastewater reaches the floor. Stop using affected fixtures and isolate contaminated areas. Request a camera inspection after clearing recurring restrictions to check for damaged pipe, standing water, or a problem connection. Do not attempt to clear an active backup with treatment chemicals.
How Luften handles it
Luften offers a free on-site walkthrough and written treatment recommendation. Managed service programs can coordinate drain and grease maintenance with documented service visits, giving building staff a clear record of treatment work and observations for follow-up.
Grease trap maintenanceFrequently asked questions
- How much does a backup cost?
- A typical full-service kitchen loses $5,000–$15,000 per backup in lost revenue plus the plumber call.
- Are bacterial products safe for food prep areas?
- Yes — they're applied at the sink drain, not on prep surfaces.
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