For restaurants, food trucks, cafeterias, and all commercial kitchens across Lafayette, Youngsville, and the greater Acadiana region, maintaining a functional and compliant grease trap is critical. It’s not just about keeping your business running smoothly, it’s a legal and environmental necessity.
As your local plumbing and grease trap experts, Hargrave’s Plumbing has compiled answers to the top questions people are asking about commercial grease traps. We provide reliable service, repair, and installation to keep your facility compliant and clog free.
The Top 10 Questions About Commercial Grease Traps, Answered by Your Acadiana Experts
1. What is a commercial grease trap (or grease interceptor)?
A grease trap is a plumbing device designed to intercept most Fats, Oils, and Grease (FOG) before they enter the wastewater disposal system. In your commercial kitchen, wastewater from sinks, dishwashers, and floor drains flows into the trap, where the FOG cools, solidifies, and floats to the top, while cleaner water exits to the sewer line. A grease interceptor is simply a larger, higher, capacity version of a grease trap, often installed outside.
2. Why do I need a grease trap in my Lafayette or Youngsville restaurant?
Local regulations in Lafayette City Parish and the Louisiana Department of Environmental Quality (LDEQ) mandate that all food service establishments pretreat their wastewater for FOG. Without a grease trap, FOG solidifies in the sewer lines, causing massive blockages, raw sewage backups, and environmental contamination. Non compliance can lead to significant fines and forced business closure.
3. How often does my grease trap need to be cleaned/pumped in Acadiana?
According to the Lafayette Sewer Use Ordinance, grease traps (especially smaller under the sink units) must be maintained on a regular basis. The minimum requirement is typically every 90 days (three months), or more frequently for high volume establishments or smaller traps (which may need cleaning as often as once per week). The most important rule is the “one-quarter cleaning rule”: your trap must be pumped once FOG and solids make up 25% or more of the total liquid depth. Hargrave’s Plumbing offers flexible, scheduled maintenance plans to ensure you meet all local codes.
4. What size grease trap does my business need?
There is no one size fits all answer. The correct size depends on the volume of FOG and wastewater your specific establishment generates. Installing the wrong size (too small or even too large) can harm your plumbing. We recommend contacting your local regulatory agency for sizing standards. As your licensed local plumber, Hargrave’s Plumbing provides professional sizing and installation for new builds and system upgrades to ensure you are meeting the latest Lafayette and Louisiana codes.
5. How does a grease trap work?
The process relies on basic physics. Wastewater enters the trap, and the flow is slowed down. This gives the warmer water a chance to cool. Since FOG is less dense than water, it floats to the surface and is trapped. Solid food particles sink to the bottom. The “cleaner” water in the middle flows out into the municipal sewer system.
6. Can I pour grease down the drain if I have a grease trap?
No. Grease traps are designed for residual FOG that is unavoidable in the wash up process. You should never pour bulk cooking oil or large amounts of grease down any drain. The grease trap is not a substitute for proper FOG disposal. Excess grease and solids will quickly overwhelm the trap, causing clogs, backups, and a foul odor.
7. Why does my grease trap smell, even after cleaning?
A bad odor is a common sign of a problem. Causes can include:
- Irregular or incomplete cleaning allowing decomposing FOG to remain.
- A dry grease trap (if all water was removed, which is why the “pump and return” method is often preferred).
- A worn or corroded manhole cover gasket allowing gases to escape.
- A clog or backup in the lines leading to or from the trap.
8. Can I clean my restaurant’s grease trap myself?
While you are responsible for keeping your trap maintained, professional cleaning is highly recommended. Commercial grease trap pumping is messy, requires proper disposal of the waste (which you are legally responsible for), and needs specialized inspection. A professional service, like Hargrave’s Plumbing, provides a complete clean, inspects baffles and components for damage, and provides the essential cleaning records required by the local health department for compliance audits.
9. What are the common signs of a grease trap problem in the Lafayette area?
Watch out for these red flags in your commercial kitchen:
- Slow-draining sinks and floor drains.
- Foul, rotten odors coming from drains or around the trap.
- Water or grease backing up into sinks or on the floor.
- Frequent clogs in your main drain lines.
- A grease layer that is visibly more than 25% of the trap’s depth.
10. What services does Hargrave’s Plumbing offer for grease traps in Acadiana? Hargrave’s Plumbing is your full-service, licensed, and insured commercial plumbing expert for Lafayette and Youngsville. We provide:
- Grease Trap Cleaning & Pumping (FOG removal and environmentally responsible disposal).
- Scheduled Maintenance Plans (monthly, quarterly, or custom plans based on your volume).
- Emergency Service for urgent clogs, backups, and health code issues.
- Grease Trap & Interceptor Installation (professional sizing and new system setup).
- Repairs (baffle, lid, and gasket replacement).
- Documentation (detailed records for LUS and local health inspectors).
Don’t let a grease trap problem slow down your business or lead to costly fines in the Acadiana area.
For expert commercial grease trap cleaning, maintenance, and repair in Lafayette, Youngsville, and all of Acadiana.
Contact Hargrave’s Plumbing today. Call us at 337-344-3920
Lafayette Location: 3138 Johnston Street, Lafayette, LA Youngsville Location: 511 Shore Drive, Youngsville, LA 70592
