Water goes down a drain and disappears. Grease doesn't, not really, and that's the entire reason grease traps exist. A grease trap catches fats, oils, and grease before they leave a commercial kitchen's plumbing, cooling and solidifying inside the trap instead of coating the inside of a pipe, a septic tank, or a public sewer line somewhere down the system. Jacksonville has a steady rotation of restaurants, food trucks, and kitchens feeding both the local population and the constant traffic around Camp Lejeune, and every one of them needs a plan for keeping that trap serviced.
Any commercial kitchen that sends cooking grease toward a drain: restaurants, food trucks with a commissary hookup, school cafeterias, church kitchens that run regular meals, and catering operations all fall into this category. It's easy for a smaller operation, a food truck, a church running one fish fry a month, to assume grease trap rules are only for full-service restaurants. They're not. Volume changes how often service is needed, not whether it's needed at all, and plenty of small kitchens get caught off guard by that distinction.
The trap fills gradually, grease and solids on top, wastewater passing through underneath, until there's no longer enough capacity left to actually separate anything. Once that happens, grease starts passing through the trap instead of staying in it, heading straight into the pipe or septic system on the other side. For a kitchen on city sewer, that's how FOG, fats, oils, and grease, ends up coating sewer lines and eventually causing blockages and overflows, the exact problem local sewer use rules are written to prevent. For a kitchen running on a septic system, which describes plenty of restaurants outside Jacksonville's city limits, it's worse in a different way: there's no municipal system absorbing the mistake. Grease that reaches a septic tank and drain field can damage a system that's expensive to repair and even more expensive to replace, and there's no backup infrastructure to catch the overflow.
It depends on the trap's size and how much grease the kitchen actually produces, but a commonly used industry guideline is to pump once grease and solids reach about a quarter of the trap's total capacity, sometimes called the twenty-five percent rule. For a busy full-service restaurant running a fryer all day, that can mean monthly or even more frequent service. A smaller operation with lighter grease output might stretch to quarterly. The only way to know for sure is to check the trap directly rather than guessing off a generic schedule, since two kitchens the same size can produce wildly different amounts of grease depending on what's actually being cooked.
Kitchens connected to municipal sewer generally have to follow local sewer use rules aimed at keeping FOG out of the public system, which trace back to the same federal framework, the Clean Water Act's pretreatment requirements, that shapes how cities manage what goes into their sewers nationwide. In practice that usually means having an appropriately sized trap installed and keeping it serviced on a schedule that actually works, plus keeping service records on hand in case a health inspector or utility asks for them. Kitchens running on a private septic system, common for restaurants and food service out in the unincorporated parts of Onslow County, don't answer to a municipal sewer use ordinance in the same way, but the stakes are arguably higher, since a grease-damaged septic system is a private repair bill with no city crew coming to help. Either way, service records are worth keeping. They're the easiest way to prove you've been staying on top of it, whether the person asking is a health inspector or a buyer's attorney if the property ever sells.
Overdue for grease trap service, or not sure what schedule your kitchen actually needs? Call (910) 378-9959 to get a licensed contractor out to assess it.
Any of these means the trap is at or past capacity, not approaching it. Waiting even another week or two at that point usually means a bigger mess and a more urgent, more expensive call.
No, and treating them as a substitute is how a kitchen ends up with a bigger problem than the one it started with. Enzyme and bacteria additives are marketed as a way to break down grease between services, and some can genuinely help slow buildup when used correctly alongside a real pumping schedule. What they don't do is remove grease and solids from the trap entirely. Some additives actually emulsify grease into tiny droplets that pass through the trap instead of staying put, which just relocates the problem further down the line, often to a spot much harder to reach than a trap with an access lid sitting right there in the kitchen. A trap still needs to be physically pumped on a real schedule no matter what's being poured in to help it along.
A technician locates and opens the trap, then pumps out the accumulated grease, solids, and wastewater. Most thorough visits include scraping solidified grease off the trap's interior walls and baffles rather than just removing what's loose, since caked-on grease left behind speeds up how fast the trap fills back up. The baffles themselves get checked for damage, since a broken baffle lets grease pass through where it's supposed to be blocked. A good service provider leaves you with a record of the visit, useful for your own maintenance tracking and for showing compliance if anyone ever asks.
A grease trap is a smaller, dedicated unit that catches fats, oils, and grease from a commercial kitchen before wastewater moves further into the plumbing system. A septic tank treats a property's entire wastewater flow. Some rural commercial kitchens have both: a grease trap protecting the septic system downstream of it.
No. Scraping plates helps, and it's genuinely good practice, but cooking oil, fryer grease, and fat rendered during cooking still goes down the drain from pots, pans, and cleaning, regardless of how careful staff are about solid food scraps.
It depends on kitchen output, plumbing fixture count, and local code requirements, which is a sizing question for a contractor or engineer familiar with your specific kitchen, not a one-size answer that applies across every restaurant.
Yes, if the truck discharges wastewater into a grease trap at a commissary or a fixed location. Even mobile operations that dump grease into a holding container rather than a plumbed trap still need that grease disposed of properly rather than poured out.
Grease coats pipes and, over time, the soil in a drain field, reducing how well either one functions. It's one of the more preventable causes of expensive plumbing and septic repairs in a commercial kitchen, which is exactly why staying ahead of the pumping schedule matters more than it might seem on a slow day.
Call (910) 378-9959 to schedule grease trap pumping or ask about a maintenance schedule that fits your kitchen's actual volume.