Grease Trap Installation in Williston, ND
From under-sink hydromechanical units to in-ground gravity interceptors, our Williston, ND crews handle the complete grease trap install.
- Prompt, Reliable Service
- Upfront Pricing
- Licensed & Insured
- Code Compliant Installations
Need a New Grease Trap Installed in Williston, ND?
Our team is ready to provide expert grease trap installation for your business.
Reliable Grease Trap Installation for Businesses in Williston, ND
HPN Plumbing installs hydromechanical grease traps and large gravity interceptors for restaurants, schools, food trucks with commissary kitchens and other food service sites. We calculate flow rates, choose the right unit and connect every fixture that discharges fats, oils and grease.
Our expertise includes:
- In-ground concrete and polyethylene gravity interceptor installs
- Hydromechanical interceptors from Zurn, Watts, Schier and Endura
- Commercial kitchen plumbing specialists

Additional Kitchen Plumbing Services in Williston, ND
Our kitchen plumbing services in Williston, ND cover sinks, disposals, dishwashers, and grease traps so your kitchen stays clean, safe, and fully functional.

Customers
Why Choose HPN Plumbing for Grease Trap Installation in Williston, ND?
Without a correctly installed grease trap, your commercial kitchen faces potential blockages, foul odors, and health code violations. HPN Plumbing provides the experience to avoid these problems in your Williston establishment.
- System Efficiency, Proper sizing and installation mean your grease trap will properly filter waste, extending the life of your plumbing system.
- Accurate Sizing, We calculate gallons per minute for every connected sink and dishwasher before choosing a unit.
- Code Compliant, Each install includes the venting, flow control and access called for by local plumbing code.
Citywide Coverage
No matter where your commercial kitchen is located in Williston, our team is ready to provide prompt and professional grease trap installation services. We understand the local infrastructure and specific requirements for businesses throughout Williston.
Experienced Team
Our plumbing team has extensive hands-on experience with grease trap installations, having worked on countless commercial and some high-volume residential kitchens. We know the ins and outs of various models and the best practices for secure, long-lasting setup.
Safety-First Approach
Safety and code compliance are paramount for every grease trap installation we perform. We adhere to all local Williston ordinances and national safety standards to protect your property and our team.
Trusted Certified Williston Plumbing Services Professionals
At HPN Plumbing, we take pride in providing licensed, certified plumbing services throughout Williston, ND. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable Grease Trap Installation Services in Williston, ND
Restaurant Grease Trap Compliance in Williston, ND
Making sure your restaurant's grease trap system in Williston, ND meets all local and state plumbing and environmental codes is crucial. HPN Plumbing is familiar with North Dakota regulations concerning FOG discharge and commercial kitchen waste. We guarantee that every grease trap installation we perform is fully compliant, helping you avoid penalties and maintain a clean, responsible operation.

Replacement & Upgrade Services in Williston, ND
If your existing grease trap in Williston, ND is old, inefficient, or no longer meets current codes, HPN Plumbing provides professional replacement and upgrade services. We can evaluate your current system, recommend modern, more efficient alternatives, and perform a smooth removal and installation. Upgrading your grease trap can greatly improve performance, reduce maintenance needs, and ensure long-term compliance.
Residential Grease Interceptor Setup in Williston, ND
While less common, some large residential kitchens or homes with extensive outdoor cooking setups may benefit from a small grease interceptor. These are typically installed under the sink and help prevent fats, oils, and grease from clogging household drains. HPN Plumbing can assess your home's needs and provide a suitable residential grease trap installation solution that protects your plumbing system from FOG accumulation.
Hydro-Mechanical Grease Interceptor Installation in Williston
Hydro-mechanical grease interceptors, often called HGI units, are compact and designed for indoor use, typically under a sink or on the floor. These units use baffles to slow down wastewater flow, allowing grease to separate and accumulate. HPN Plumbing installs various sizes of HGI units, ensuring proper venting, leveling, and connection to your drainage system in Williston for maximum efficiency.
Gravity Grease Trap Installation in Williston
Gravity grease traps are a common and effective solution for many commercial kitchens in Williston. These passive systems use the natural separation of FOG from water due to density differences. Our plumbers are experts in installing gravity grease traps, ensuring proper sizing, correct inlet and outlet piping, and easy access for future cleaning and maintenance to get the most from their efficiency.
Hydromechanical Grease Trap Installation in Williston
Hydromechanical grease traps sit under or near sinks and use baffles and flow control to separate grease from water. They are common in small cafes, coffee shops and quick-service restaurants with limited space. We install units from Zurn, Watts, Schier and Endura sized by gallons per minute. Each install includes a flow control fitting and proper venting to keep the trap working as designed. These units need frequent cleaning, so we place them where staff can reach the lid without trouble.
Automatic Grease Removal Units in Williston
Automatic grease removal devices skim grease from the water and collect it in a container your staff empties. Brands like Thermaco Big Dipper are popular in kitchens with limited space and frequent cleaning needs. We install these units with the correct power supply and drain connections. They can reduce the need for frequent pump-outs in smaller kitchens. We explain daily maintenance so your staff keeps the unit running smoothly.

Grease Trap Replacement and Upgrades in Williston
If your existing grease trap is old, damaged, or no longer meets current code requirements, HPN Plumbing offers professional replacement and upgrade services. We can remove your outdated unit and install a new, more effective model that complies with all regulations in Williston. Upgrading can prevent future plumbing issues and help your business steer clear of fines related to FOG discharge.
Grease Trap Installation Near Me in Williston, ND
Our crews are based nearby and can visit your site quickly for a sizing review. We bring the equipment needed for indoor or outdoor installs. You get one point of contact from planning to final inspection.
Searching for 'grease trap installation near me' in Williston, ND? HPN Plumbing is your local commercial plumbing expert. Our teams are strategically located to provide quick response and efficient service to businesses across the whole Williston area.
HPN Plumbing at a Glance
- Licensed and insured plumbers serving Williston, ND
- 24/7 emergency service with same-day scheduling
- Upfront, flat-rate pricing before work begins
- 4.9-star rated by 408+ North Dakota customers
Williston Map
Williston Information
- Population
- 27,706
- Area codes
- Local
- Service area
- Williston and communities within 40 miles
- Nearby
- Watford City, Dickinson, Minot AFB, Minot
For commercial kitchens in Williston, ND, proper grease trap installation is crucial for keeping FOG breakdown and odor issues under control. Big swings between summer heat and winter cold make pipes expand and contract, which slowly loosens fittings over the years.
Expert Services
Trust our professionals for reliable HPN Plumbing solutions in Williston, ND.
Our Specialized Plumbing Services in Williston, ND
At HPN Plumbing, we provide a complete range of plumbing services across Williston, ND. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Grease Trap Installation Process Works in Williston, ND
HPN Plumbing follows a clear, step-by-step process to ensure every grease trap installation in Williston, ND is done right and to code.
Request a Quote
Call (701) 403-1348 and tell us about your kitchen, fixtures and timeline. We schedule a site visit to measure, review plans and confirm local requirements.
Size and Permit
We calculate flow rates, select the right trap or interceptor and prepare any permit documents. Then we set an install date that works around your service hours.
Install and Inspect
Our crew sets the unit, connects inlet and outlet piping, adds venting and flow control and tests the system. We meet the inspector and walk your staff through cleaning access.
Frequently Asked Questions About Grease Trap Installation in Williston
The cost of grease trap installation in Williston, ND varies widely based on the size, type, and complexity of the system. Small under-sink units might range from $1,000 to $3,000, while large outdoor interceptors requiring excavation can cost anywhere from $5,000 to $20,000 or more. We provide transparent, upfront pricing after a thorough on-site assessment.
While the terms are often used interchangeably, 'grease trap' usually refers to smaller, indoor hydro-mechanical units, often found under sinks. 'Grease interceptor' usually refers to larger, outdoor gravity-fed units with higher capacities. Both serve the same purpose of separating FOG from wastewater.
Installation time depends on the size and complexity of the grease trap. A small under-sink unit might take a few hours, while a large outdoor interceptor could require several days due to excavation and concrete work. We aim to complete installations efficiently to minimize disruption to your business operations.
Most food service businesses that cook, wash dishes or prepare food with fats, oils or grease are required to have one. Local pretreatment programs set the specific rules, and we can help you find out what applies to your site.
The lifespan of a grease trap depends on its type, material, and how well it's maintained. Steel grease traps may last 10 to 15 years, while durable fiberglass or polyethylene units can last 20 to 30 years or even longer. Regular cleaning and proper usage are key to extending its lifespan.
Yes, in most cases, installing a new grease trap or replacing an existing one in Williston requires specific permits from the local plumbing authority. HPN Plumbing will guide you through the permitting process, ensuring all necessary documentation is submitted and approvals are obtained before beginning work.
HPN Plumbing stands behind our work with a comprehensive warranty on all grease trap installations. The specific warranty period will be outlined in your service agreement and usually covers parts and labor for a designated timeframe. Manufacturer warranties also apply to the grease trap unit itself.
The timeline for grease trap installation depends on the project's scope. A simple under-sink unit might take a few hours. Larger outdoor gravity interceptors, which involve excavation and more extensive plumbing, can take anywhere from one to several days. We always aim to minimize disruption to your business operations.
What People Are Saying About Our Plumbing Experts?

James P.
Our commercial plumbing system had a leak under the sink, and HPN Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Williston, ND
Patricia H.
We had a slab leak that two other companies could not find. HPN Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Bismarck, ND
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Mandan, ND
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Watford City, ND
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Watford City, ND
Emily R.
I called HPN Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Watford City, ND












