⭐ 5.0 Rating — Commercial Kitchen Reviews
★★★★★
"We switched to Spokane Septic for our restaurant's grease trap service. They pump, jet the lines, and give us all the compliance paperwork. Previous company just skimmed the top. Night and day difference."
— Verified Google Review
★★★★★
"Our kitchen floor drains were backing up every few weeks. They pumped the trap and jetted the lines — haven't had a single backup since. Set us up on quarterly service. Reliable and fair."
— Verified Google Review
Grease Trap Cleaning in Spokane, WA
If you own or manage a restaurant, commercial kitchen, or food service operation in Spokane County, you are
required to maintain a grease trap or grease interceptor to prevent fats,
oils, and grease (FOG) from entering the city sewer system. At Spokane Septic Services, we provide
professional grease trap cleaning, pumping, and jetting for commercial kitchens across
the entire Spokane metro area.
Our 2,000-gallon pump truck handles both indoor hydromechanical grease interceptors (HGI)
and large outdoor gravity grease interceptors (GGI). We pump, scrape, and wash down all
surfaces including baffles and tees — not just skim the top. All waste is hauled to a permitted disposal
facility in full compliance with Spokane County regulations.
We also offer hydro-jetting to clear FOG buildup from drain lines downstream
of the trap. Grease doesn't stop at the interceptor — it coats pipe walls and hardens over time.
A combination of pumping plus jetting is the most effective way to prevent blockages and keep your kitchen
running without shutdowns or code violations.
Who Needs Grease Trap Service?
Any commercial food establishment that discharges wastewater containing FOG is required to have a grease
control device under Spokane city and county code. This includes restaurants, cafeterias, food
trucks, catering companies, bakeries, bars, hotels, schools, hospitals, and any facility with
a commercial kitchen. Even churches with kitchens used for events may require grease interceptors.
Residential grease issues? If your home kitchen drain is slow or backing up with grease
buildup, we can clear it with our hydro-jetting service. While homes don't
typically have grease traps, years of cooking oil and food waste can accumulate in residential sewer lines
and cause the same problems as a clogged commercial trap.
Best Practices to Reduce FOG Buildup
Between professional cleanings, your kitchen staff can take simple steps to reduce FOG discharge and
extend the time between pump-outs. Scrape all plates and cookware into the trash before
washing. Wipe pots and pans with a disposable paper towel to remove excess grease before
rinsing. Collect used cooking oil in a sealed container for recycling — never pour it down
the drain.
Install strainers on all floor and sink drains to catch food particles before they enter
the grease trap. These simple practices reduce the load on your interceptor, extend its lifespan, and
help you pass inspections with clean records. When it's time to pump, call Spokane Septic Services — we
handle everything from pumping to jetting to documentation.
Serving All of Spokane County
We provide commercial grease trap cleaning across the entire Spokane metro area including
Spokane Valley, Liberty Lake,
Deer Park, Mead and Colbert,
Cheney and Medical Lake, Otis Orchards, and
Nine Mile Falls. Whether your restaurant is downtown Spokane or out in the
valley, we have the equipment and the schedule flexibility to keep your kitchen running clean.
We are locally owned — not a franchise. When you call, you speak directly to the technician who will service
your grease trap. One truck brings everything — our pump, our hydro-jetting
system, and our HD inspection camera. One visit. One bill.
Grease Trap Cleaning FAQ
How often does a grease trap need to be cleaned in Spokane?
Spokane County requires gravity grease interceptors (GGI) to be pumped every 90 days or when the final
chamber reaches 25% capacity — whichever comes first. Hydromechanical grease interceptors (HGI) must be
cleaned every 30 days. High-volume kitchens may need more frequent service. We can set up a recurring
schedule to keep you compliant automatically.
What happens if I don't clean my grease trap?
When FOG exceeds the 25% threshold, it passes through the trap into the city sewer system. This can
cause sewer blockages, backups into your kitchen, and environmental contamination. Spokane County
conducts inspections and non-compliant businesses face penalty fees and potential closure orders.
Regular maintenance is far cheaper than emergency remediation.
How much does grease trap cleaning cost?
Grease trap pumping in Spokane typically costs between $250 and $600 depending on the trap size,
accessibility, and how much buildup is present. Larger in-ground interceptors (500+ gallons) cost more
than small under-sink units. We always provide upfront pricing before starting work. Bundled pumping
+ jetting packages are available for recurring service contracts.
Do you provide compliance documentation?
Yes. Every service visit includes date-stamped documentation showing what was cleaned, volume removed,
and where it was disposed. You can keep these records on-site for inspections. We also offer digital
copies via email for easy filing and audit preparation.
Can you jet the drain lines after pumping the trap?
Absolutely. We carry a 4,000 PSI
hydro-jetting system on the same truck. After pumping your grease trap,
we can jet the downstream drain lines to remove hardened grease buildup that the trap didn't catch.
This combo service is the most effective way to prevent future blockages and is recommended at least
once per year for high-volume kitchens.
What is the 25% rule for grease traps?
The 25% rule means your grease trap must be cleaned before the combined depth of floating grease and settled solids reaches 25% of the total trap capacity. This is measured from the top (grease layer) and bottom (solids layer) of the trap. Once the combined depth hits 25%, the trap can no longer effectively separate FOG from wastewater. Spokane County enforces this threshold during inspections.
What types of businesses need grease trap service?
Any commercial food establishment that discharges wastewater containing fats, oils, and grease is required to have a grease control device under Spokane city and county code. This includes restaurants, cafeterias, food trucks, catering companies, bakeries, bars, hotels, schools, hospitals, and any facility with a commercial kitchen.
Do you service both indoor and outdoor grease traps?
Yes. We service both small indoor hydromechanical grease interceptors (HGI) typically found under sinks, and large outdoor gravity grease interceptors (GGI) buried in the ground. Our 2,000-gallon pump truck handles traps of all sizes — from 20-gallon under-sink units to 1,500-gallon in-ground interceptors.
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