How much does grease trap cleaning cost in West Virginia?
National cost guides put a routine grease trap cleaning at $75 to $400 for a small indoor trap. An outside interceptor of 500 to 1,500 gallons runs about $300 to $1,500 a visit.
In West Virginia, the outside trap is usually the one to plan for. The state’s grease trap procedure recommends at least 1,000 gallons for one. It does not approve inside traps for new construction. These are 2026 market numbers, not our price list. For a written quote on grease trap cleaning in the southern coalfields, call or text (304) 436-3409.
What does grease trap cleaning cost by trap size?
Prices climb with trap size. One national guide says most companies charge a base fee plus the gallons pumped. Here is what three national cost guides printed in 2026 for one cleaning.
| Trap type and size | One cleaning, national cost guides (2026) |
|---|---|
| Small indoor trap, under a sink or under 50 gallons | $75 to $400 |
| Mid-size trap, 50 to 500 gallons | $175 to $600 |
| Outside interceptor, 500 to 1,500 gallons | $300 to $1,500 |
| Large interceptor, over 1,500 gallons | $475 to $3,000 or more |
Source: three national cost guides from service directories, 2026 editions. One guide prices a basic pump-out on a regular schedule at the low end. One-time calls and full cleanings that scrape the walls and rinse the trap cost more.
The one West Virginia price we found is a public bid. In 2024, one bidder on a state corrections contract priced each grease trap pumping at $1,000. The bid did not list the trap sizes.
What does a year cost? One guide’s regular rate for a 500 to 1,500 gallon interceptor is $325 to $700 a visit. Four cleanings a year at that rate come to about $1,300 to $2,800.
What makes grease trap cleaning cost more?
These are the things national cost guides and the state’s rules point to:
- Trap size. A bigger trap holds more gallons to pump and haul.
- How full it is. One guide says an overdue trap can cost up to three times the normal price.
- Truck access. The same guide lists a hose run longer than 75 feet as a reason the price goes up. Keep the lid clear on service day.
- A set schedule. Two guides say a standing schedule costs about 10 to 25 percent less per visit than one-time calls.
- After-hours calls. Two guides put rush and after-hours work at 1.5 to 2 times the regular rate.
- Distance. One guide says rural kitchens far from the nearest hauler may pay a $150 to $250 travel charge.
- Disposal. West Virginia’s rules make a tank pumper document an approved disposal site to get a permit. One guide says higher disposal costs push city prices up.
What do West Virginia’s rules say about grease traps?
The state’s sewage design rule requires grease traps at restaurants and similar kitchens with a lot of grease. An outside trap must hold at least 150 gallons. It must sit within 30 feet of the fixtures it serves, in an easy-to-reach spot outside the building.
The state’s grease trap procedure, called WW-13, adds detail. It recommends 1,000 gallons or more for an outside trap and sizes each one with a formula. It says modified septic tanks are commonly used as outside grease traps. It also calls for sealed risers with tamper-resistant lids up to the surface.
A 2020 state law covers grease trap lids at hotels and restaurants. Covers on outdoor traps, or traps in public areas, must be bolted or locked and kept closed. A violation is a misdemeanor, and the fine is $50 for each day it continues.
The state’s food rule adopts the 2013 FDA Food Code. That code says a grease trap must sit where it is easy to reach for cleaning. Its notes warn that a trap nobody can clean could harbor pests or make the sewage system fail.
If your kitchen drains to a city sewer, ask the sewer utility about its grease rules. WW-13 says a receiving utility’s rules come first when they meet or exceed the state’s. For anything else, the county health department is the office to ask.
How often should a grease trap be cleaned?
None of the state rules we read sets a cleaning schedule. National guides use the 25 percent rule instead. Pump the trap before the grease on top and the solids on the bottom fill a quarter of its depth.
| Kitchen | How often national guides say to clean |
|---|---|
| Busy full-service restaurant | Weekly to every 6 weeks |
| Mid-volume kitchen, such as a deli or a school cafeteria | Monthly to every 3 months |
| Light kitchen, such as a small cafe or an office | Every 3 to 6 months |
Trap size matters too. One guide puts small indoor traps on a monthly schedule and interceptors over 500 gallons on a quarterly one. Another says a larger trap cuts how often it needs service. If a trap pumped more than once a week still nears overflow, that guide calls it too small.
What records should a kitchen keep?
West Virginia’s sewage rules make every tank pumper keep a written record of each job. Those records go to the state every quarter. The state’s log form marks each load as septage or grease and names the disposal site.
Keep your own file too. Ask for a written ticket at each cleaning with the date and the gallons pumped. If an inspector or your sewer utility asks about the trap, the ticket answers the question.
What if your kitchen is on a septic system?
Some kitchens here drain to a septic tank instead of a city sewer. Grease that slips past the trap ends up in that tank. The Mercer County Health Department says grease and cooking oil can lead to early septic system failure.
A kitchen on septic should keep both jobs on a schedule. The tank itself is a commercial septic pumping job. Our post on septic tank pumping costs covers that price.
How do you get a real price for your trap?
Call or text (304) 436-3409 and tell us about the trap. Its size and the spot where the lid sits help most. The date of the last pumping helps too.
Honey Dippers cleans grease traps for businesses and for homes that have one. We look at the job and put the quote in writing. Roderfield sits at the center of our service area. Read how our grease trap cleaning service works, or check the towns and counties we serve.