Commercial Plumbing That Keeps Your Business Running

Commercial drain cleaning, backflow prevention and testing, plumbing repair, and scheduled maintenance for businesses across the Bismarck-Mandan area.

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From Emergency Repairs to Full Remodels

Drain Cleaning

Slow drains, stubborn clogs, and backed-up lines cleared fast. From kitchen sinks to main drains — we fix it right the first time.

Sewer Camera Inspection

See exactly what’s happening inside your sewer line. HD video inspections for diagnostics, pre-purchase peace of mind, and $100 off every scope.

Sewer Line Repair & Replacement

From cracked pipes and root intrusion to full sewer main installations — we handle the big jobs other plumbers won’t.

Water Heaters

Traditional and tankless installation, repair, and replacement. No hot water? We’ll get it back — fast. $200 off water heater replacement.

Toilet Repair & Installation

Running toilets, clogs, leaks at the base, and full replacements. Quick, clean, done right.

Pipe & Leak Services

Leak detection, pipe repair, repiping, and water line replacement. Hidden leaks found and fixed before they cause serious damage.

Frozen Pipe Repair

North Dakota winters hit hard. Frozen lines, burst pipes, and emergency thawing, we respond fast when the cold strikes.

Sump Pumps

Installation, repair, and battery backup systems. Stay ahead of spring thaw and basement flooding before it starts.

Reverse Osmosis System

Clean, pure drinking water straight from your tap. Under-sink and whole-house RO systems installed and maintained.

Water Treatment & Filtration

Hard water, bad taste, and sediment problems solved. Water softeners, whole-house filtration, and well water treatment.

Septic Services

Pumping, maintenance, inspections, and full system repair. Keeping rural North Dakota systems running right.

Remodel Plumbing

Bathroom gut remodels, wet space builds, kitchen upgrades, and full rough-ins. Every option, every budget, we do it all.

Commercial Plumbing

Drain cleaning, backflow testing, and full commercial repair and maintenance. Restaurants, offices, and property management.

When Your Business Has a Plumbing Problem

A clogged drain or broken pipe at home is inconvenient. In a commercial building, it can shut down your operation, drive away customers, and create health code violations. Whether you manage a restaurant, office building, retail space, or apartment complex, you need a commercial plumber who responds fast, works clean, and understands the higher demands of commercial plumbing systems.

We provide commercial plumbing repair, commercial plumbing maintenance, commercial drain cleaning, backflow testing, backflow prevention, and pipe repair for businesses throughout Bismarck, Mandan, Lincoln, Wilton, and surrounding communities in Burleigh and Morton Counties. From a floor drain backing up commercial building to an annual backflow test, we handle it all with the same professionalism and up-front pricing we bring to every residential call.

The EPA requires public water systems to implement cross-connection control programs that include backflow prevention to protect drinking water from contamination. For commercial properties, this means backflow preventer installation and annual backflow testing are not optional. They’re required by code, and failing to comply can result in fines or water service disconnection.

Signs Your Commercial Property Needs a Plumber

Floor Drain Backing Up in Your Building

A floor drain backing up commercial building is one of the most disruptive plumbing problems a business can face. Grease, food waste, soap, and sediment accumulate faster in high-traffic commercial drains than in residential ones. When a commercial floor drain backs up, it can create slippery floors, foul odors, and potential health code issues.

Slow Drains in Restrooms or Kitchen

Slow draining sinks, toilets, or floor drains in a commercial restroom or kitchen point to buildup in the drain line. Restaurants deal with commercial grease trap buildup. Offices and retail spaces see soap and paper product accumulation. How often should commercial drains be cleaned? Most businesses benefit from quarterly or semi-annual cleaning, depending on usage.

Backflow Device Due for Annual Testing

Is backflow testing required? Yes. Most municipalities require an annual backflow test on all testable devices installed on commercial properties. If your backflow preventer hasn’t been tested this year, you may be out of compliance. We provide certified backflow testing and submit the results on your behalf.

Water Heater Not Keeping Up With Demand

A commercial water heater that can’t maintain hot water for restrooms, kitchen sinks, or dishwashers is either undersized, failing, or in need of maintenance. We service, repair, and replace commercial water heater systems for businesses of all sizes.

Leaking Pipes or Fixtures in Your Building

A pipe leak in a commercial building can damage inventory, equipment, finished spaces, and the floor below. Commercial pipe repair needs fast attention to prevent water damage and business interruption. We locate leaks, make repairs, and help prevent recurrence.

Tenants or Customers Complaining About Plumbing

If you’re a plumber for property management, apartment complex plumber calls, or commercial facility manager, tenant complaints about slow drains, low water pressure, or running toilets mean the plumbing needs professional attention. We work with property managers to address issues quickly and keep tenants satisfied.

Commercial Plumbing Services We Provide

We clear clogged and slow drains in restaurants, offices, retail spaces, and multi-unit buildings. Commercial drain cleaning includes floor drains, kitchen drains, restroom drains, and main sewer connections. For restaurants and food service, we service commercial grease trap systems to prevent buildup that leads to backups and odors. Industrial drain maintenance programs keep high-traffic facilities running without interruption.

We provide backflow preventer installation, annual backflow test services, backflow device repair, and backflow certification documentation. What is backflow testing? It’s a required inspection of the mechanical device that prevents contaminated water from flowing backward into the public water supply. We test RPZ valve assemblies, double check valves, and other approved devices. We’re a certified backflow tester ND and handle cross-connection prevention for all commercial property types. How much does backflow testing cost? We provide competitive, up-front pricing. Call for a quote.

From commercial restroom plumbing repairs to office building plumbing emergencies, we handle all types of commercial plumbing repair. Broken supply lines, failed fixtures, leaking pipes, and malfunctioning water heaters in commercial settings need fast, reliable service. We respond quickly and minimize downtime for your business. We also handle retail plumbing repair for storefronts and shopping centers.

When your main sewer line slows down or backs up, your entire building is affected. Commercial sewer cleaning clears blockages caused by grease, roots, and debris accumulation. For recurring sewer issues, we recommend a sewer camera inspection to identify the root cause and prevent repeat calls.

A commercial plumbing maintenance plan keeps your building’s plumbing in working order and prevents emergency calls. We offer scheduled maintenance packages that include drain cleaning, backflow testing, fixture inspections, water heater service, and priority scheduling for repairs. Whether you manage one building or multiple properties, we tailor the plan to your needs.

Industries and Properties We Serve

We provide commercial plumbing services for a wide range of business types across the Bismarck-Mandan area:

Restaurants & Food Service: Commercial drain cleaning, commercial grease trap maintenance, commercial hydro jetting, hot water systems, and code compliance. Restaurant plumbing requires frequent attention due to heavy grease and food waste load.

Office Buildings: Restroom fixture repair, water heater service, pipe repair, and backflow testing. Office building plumbing issues often go unnoticed until tenants complain.

Retail & Storefronts: Retail plumbing repair, restroom maintenance, and emergency leak response. We work around your business hours to minimize disruption.

Apartment Complexes & Multi-Unit Properties: We’re an experienced apartment complex plumber handling unit-level repairs, common area maintenance, and building-wide drain cleaning. Property managers rely on us for responsive, scheduled service.

Property Management Companies: We serve as the go-to plumber for property management firms across Bismarck and Mandan. One call handles everything from a tenant’s clogged toilet to a building’s annual backflow certification.

Your Problem,
Solved in 4 Simple Steps

Step 1

Schedule Service

Call, text, or request service online to book a time that works for you. Our team confirms your appointment and arrives when promised.

Step 2

Assess & Quote

We inspect the issue and explain your options clearly. You’ll receive straightforward pricing before any work begins, no surprises, no pressure.

Step 3

We Get to Work

Once approved, we complete the job using high-quality parts and proven methods. Boot covers on, workspace protected, and your home treated with care.

Step 4

Final Check & Guarantee

Before we leave, we review the work with you and make sure everything meets our standards. Every job is backed by our satisfaction guarantee.

Ready to get started?

HOw can we help?

Our Awesome Reviews

Alicia Wehri

If you’re looking for someone super professional, does the job right, and very timely, I’d highly recommend Premium Plumbing & Rooter. I had Joe out for the first time on a sewer-related emergency, resulting in the need to replace 10 feet of sewer line this past week, and I was highly impressed. The guy really does it all, and does it very well. Keep it up!

15Feb2026

John Dukes

While a plumbing emergency is never fun, Premium Plumbing got here quick and did a great job dealing with the crisis. It was a pleasure to watch people that know their trade and I’ll definitely use them again if I have another plumbing issue. Reasonably priced too.

21Feb2026

Krystal Tkach

What a great company! Came out the same day, free estimate, and was able to get me in the same day to fix my issue! 5 Stars all the way! Will definitely use this company for any and all in the future.

10March2025

Carleen Porten

I received wonderful service and honesty!! I was told what was needed and nothing extra. Their work is guaranteed for a year and if I have any issues, I am to call right away and the problem will be resolved. I highly recommend Premium Plumbing and Rooter. It’s wonderful to find a plumber who is willing to come and take care of any plumbing problems.

18Jan2026

HaLea Ohlmacher

They came to our house today when i called this morning as our sewage ejector system wasnt working properly and needed a new one they came to our house looked at it for free and went out and got the new sewage pump system and all the parts for it they cleaned the hole where the pump goes and put the new one in and made sure the pump worked and everything before they left our house

5Jan2026

Christina Feland

If I could give higher than five stars I would! Joe and his team were absolutely wonderful to work with. They were able to fix decades worth of corrosion to the plumbing in our home. Their work was done with a level of artistry I’ve never experienced with a plumber before. Joe was able to give us more space in our laundry room by simplifying and correcting existing plumbing. Once the project was completed they thoroughly explained all that was done as well as how the work will aid future projects.  An added bonus, they cleaned up after themselves, were respectful of the property and were extremely conscientious of the pets.

22March2026

Proudly Serving Central North Dakota

From the heart of Bismarck to the rural communities along the Missouri River, Premium Plumbing & Rooter is your local plumbing team across Burleigh, Morton, and McLean counties. Whether you’re in a newer subdivision in Lincoln or a farmstead near Wilton, we bring the same level of care and professionalism to every call.

Commercial Plumbing Questions

How often should commercial drains be cleaned?

Most commercial kitchens and high-traffic restrooms benefit from quarterly drain cleaning. Office buildings and retail spaces may only need semi-annual or annual service. We’ll assess your facility and recommend the right schedule based on usage and drain condition.

Is backflow testing required for my business?

Is backflow testing required? In most jurisdictions, yes. Commercial properties with testable backflow prevention devices are required to have them inspected and tested annually by a certified backflow tester ND. We handle the testing and submit the paperwork for you.

How much does backflow testing cost?

How much does backflow testing cost depends on the number and type of devices on your property. We provide competitive, up-front pricing. Many businesses combine backflow testing with a commercial plumbing maintenance plan to reduce overall costs.

Do you offer maintenance plans for commercial properties?

Yes. Our commercial plumbing maintenance plan includes scheduled drain cleaning, annual backflow testing, fixture inspection, water heater service, and priority response for emergency calls. We customize the plan to your property type and budget.

Can you handle apartment buildings and multi-unit properties?

Yes. We serve as an apartment complex plumber and plumber for property management companies across the Bismarck-Mandan area. We handle individual unit repairs, common area maintenance, and building-wide system issues. Call (701) 805-9911 to discuss your property.

Commercial Plumbing That Keeps Your Business Running