Commercial Plumbing
Old Fashioned Service with Modern Technology

Commercial Plumbing Services in Shreveport, LA
Licensed Commercial Plumbing for Businesses Across Northern Louisiana
Commercial plumbing systems operate at a scale and complexity that residential plumbing doesn’t approach. Higher water volumes, stricter code requirements, specialized fixtures, and the financial consequences of downtime demand a plumbing partner who understands commercial operations. Mark Johnson & Sons Plumbing delivers professional commercial plumbing services throughout Shreveport — from emergency repairs to preventive maintenance contracts — keeping your business running without interruption.
Why Commercial Plumbing Requires Specialized Expertise
A plumbing failure at a restaurant can shut down food service and trigger health code violations. A backed-up drain at a medical office creates sanitation concerns that affect patient safety. A burst pipe in a retail space damages inventory and drives customers away. Commercial plumbing problems carry business consequences that go far beyond the repair cost itself.
Commercial systems also face demands that residential plumbing never encounters. Restaurants push hundreds of gallons through grease-laden drain lines daily. Multi-unit apartment buildings and office complexes serve dozens of fixtures on shared supply and waste lines. Industrial kitchens, salons, and laundromats use water in volumes and temperatures that stress pipes, valves, and water heaters beyond standard residential specifications.
In Shreveport, commercial properties must comply with the Louisiana State Plumbing Code and local Caddo Parish regulations, which impose specific requirements for backflow prevention, grease trap sizing and maintenance, commercial water heater installation, and ADA-compliant fixture placement. Working with a plumbing company that understands these requirements prevents costly code violations and keeps your business in good standing with inspectors.
Our Commercial Plumbing Services
Restaurant and Food Service Plumbing
Shreveport’s restaurant scene — from downtown eateries to the commercial corridors along Youree Drive and Bert Kouns — depends on plumbing systems that handle heavy grease loads, high-volume dishwashing, and constant fixture use. We install, repair, and maintain commercial kitchen plumbing including grease traps, floor drains, pre-rinse stations, commercial dishwasher connections, and gas lines for cooking equipment. Regular grease trap service and drain jetting keep your kitchen compliant and flowing.
Office and Professional Building Plumbing
Office buildings, medical practices, dental offices, and professional suites require reliable plumbing that operates quietly in the background. We handle restroom fixture repair and replacement, water heater service, supply line maintenance, and sewer issues for multi-tenant commercial buildings. Our uniformed technicians understand the importance of minimizing disruption to your tenants and their clients.
Retail and Hospitality Plumbing
Hotels, retail stores, and entertainment venues in the Shreveport-Bossier metro need plumbing that keeps pace with customer traffic. We service restroom fixtures, water fountains, sprinkler connections, and the high-capacity water heating systems these properties demand. Emergency response is available around the clock because a plumbing failure during peak business hours costs money every minute it persists.
Multi-Unit Residential Plumbing
Apartment complexes, condominiums, and student housing throughout Shreveport present unique challenges — shared water lines, common sewer connections, and the need to access individual units with minimal disruption to other residents. We coordinate repairs and maintenance schedules that respect tenant occupancy while keeping building systems functional and code-compliant.
Backflow Prevention and Testing
Louisiana requires annual backflow preventer testing on commercial properties to protect the public water supply from contamination. We install, test, and certify backflow prevention devices and submit the required documentation to the Shreveport Water Department. Staying current on testing avoids fines and potential water service interruption.
Preventive Maintenance Contracts
Reactive plumbing — waiting for something to break before calling a plumber — is the most expensive way to manage a commercial property. Our preventive maintenance agreements include scheduled inspections, drain cleaning, fixture checks, water heater service, and priority emergency response. We identify developing problems before they cause disruptions and keep your plumbing system operating at peak reliability.
Commercial Water Heater Service
Commercial water heaters — whether tank, tankless, or boiler-based systems — serve higher demand than residential units and require specialized knowledge for installation, repair, and maintenance. We service commercial water heating equipment in restaurants, hotels, salons, gyms, and other high-demand Shreveport businesses.
Sewer and Drain Service
Commercial drain lines handle far more volume than residential systems and are subject to grease buildup, industrial waste, and heavy usage that accelerate deterioration. We provide camera inspection, hydro jetting, drain cleaning, and sewer repair for commercial properties of all types. Scheduled drain maintenance is especially critical for food service establishments.
Call us at 318-319-0220 today or click below to schedule service.
When to Call for Commercial Plumbing Service
- Any plumbing emergency that threatens business operations or customer safety
- Drain backups in commercial kitchens or restrooms
- Water heater failure affecting your business operations
- Fixture leaks or running toilets increasing your water bill
- Grease trap that needs cleaning, repair, or upsizing
- Backflow preventer due for annual testing or certification
- Planning a tenant buildout, renovation, or new construction that requires plumbing
- You want to establish a preventive maintenance program for your property
Why Choose Mark Johnson & Sons in Shreveport
- Commercial code expertise — we understand Louisiana State Plumbing Code requirements, Caddo Parish regulations, and the inspection standards Shreveport commercial properties must meet
- Minimal business disruption — we schedule work around your operating hours and complete emergency repairs as quickly as possible
- 24/7 emergency availability — plumbing emergencies at commercial properties can’t wait until Monday morning
- Preventive maintenance programs — customized service agreements that reduce emergency calls and extend equipment life
- Fully licensed, bonded, and insured — the protection your business needs when contractors work on your property
- Veteran-owned, operating since 1997 — Mark Johnson & Sons has earned the trust of Northern Louisiana businesses through consistent, dependable service
Frequently Asked Questions
Do you work on commercial properties of all sizes?
Yes. We service everything from single-tenant retail spaces to large multi-unit apartment complexes, restaurant chains, office buildings, and industrial facilities throughout the Shreveport area. Our equipment and expertise scale to match the scope of the job.
How quickly can you respond to a commercial plumbing emergency?
We prioritize commercial emergencies because we understand the financial impact of downtime. In most cases, we have a technician on site within one to two hours during business hours. After-hours emergency dispatch is available 24/7 by calling 318-319-0220.
Do you offer preventive maintenance contracts?
Yes. Our maintenance agreements are customized based on your property type, size, and the specific equipment and fixtures in your building. Contracts include scheduled service visits, priority emergency response, and consistent pricing. We find that properties on maintenance contracts experience significantly fewer emergency calls and lower total plumbing costs.
Can you handle plumbing for a restaurant buildout or renovation?
Absolutely. We work with general contractors and property owners on commercial tenant improvements including rough-in plumbing, fixture installation, grease trap sizing and installation, gas line connections for cooking equipment, and all necessary code compliance. We coordinate with inspectors throughout the project to avoid delays.
How often should commercial grease traps be cleaned?
Frequency depends on the volume of grease your kitchen produces. Most Shreveport restaurants need grease trap service every 30 to 90 days to stay compliant with Caddo Parish regulations and prevent drain backups. High-volume operations may need more frequent service. We’ll recommend a schedule based on your specific operation.
Do you provide backflow testing and certification?
Yes. We are certified to test, repair, and install backflow prevention devices. Louisiana requires annual testing on commercial properties, and we handle the testing, documentation, and submission to the Shreveport Water Department on your behalf.
What types of commercial water heaters do you service?
We work on all commercial water heating systems including large-capacity tank heaters, commercial tankless units, boiler systems, and point-of-use heaters. Whether your business needs repair, replacement, or a new installation sized for your demand, we have the expertise to handle it.
Can you work outside of business hours to avoid disrupting operations?
Yes. We regularly schedule non-emergency commercial work during evenings, early mornings, or weekends to avoid interfering with your business operations. Maintenance visits, installations, and planned repairs can all be scheduled around your operating hours.
Do you service properties outside of Shreveport?
We serve the entire Shreveport-Bossier metro area and communities throughout Caddo and Bossier parishes. Properties in Haughton, Benton, Blanchard, and other surrounding communities are within our regular service area.
How do I set up a maintenance contract for my property?
Call us at 318-319-0220 or schedule a consultation online. We’ll visit your property, assess the plumbing systems and equipment, identify any existing issues, and propose a maintenance plan with clear pricing and service frequency. There are no long-term commitments required — our service quality keeps clients renewing.
More Services in Shreveport
Mark Johnson & Sons Plumbing provides comprehensive services across Shreveport and Caddo Parish:
- Plumbing Services in Shreveport
- Water Heater Services in Shreveport
- Sewer & Drain Services in Shreveport
- Water Treatment Services in Shreveport
View all Shreveport services | All service areas
Contact Us Today
Your business depends on plumbing that works reliably every day. Mark Johnson & Sons Plumbing provides the commercial expertise, rapid response, and preventive maintenance programs that Shreveport businesses need to avoid costly disruptions. Call 318-319-0220 to discuss your commercial plumbing needs or set up a maintenance agreement. Old-fashioned service with modern technology — built for business.
See What Our Customers Have to Say About Us
Our Reviews

“We have been using Mark Johnson Plumbing for a number of years. We have always been pleased with the technicians and the services they perform.”
– James A.
“Hagen came & quickly assesses the situation after Atmos came out & cut the gas off. He was very professional & founds the two problems quickly! Luckily they were not pricey Issues at all. Then (Christopher) Chris Came back Out very quickly to cut the gas back on inside the house after Atmos did outside. Due to COVID they could not come in the house to turn the valves back on which we had NO idea where they were located. We felt SO stupid that we couldn’t handle that but Chris assured us that most wouldn’t!
He was so nice & professional!! I will definitely call Mark Johnson again. ”
– Marion W.
“I was able to get an appointment the next day.
Service was great, fast, friendly, and exactly what was agreed on. They were on time and did I mention friendly? I would recommend this company to anyone who needs quality plumbing work done. Ask for Quinn Wall.
The customer service was awesome from the start as well. Text notifications of who’s coming, when they will be there. Nice job!”
– Mark T.
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Doing It Right Since 1997

- Veteran Owned & Operated Business
- Multi-Generational Family Business
- Same Day Plumbing Services Available
- Upfront, Flat Rate Pricing Provided to You
- Available for Any Plumbing Emergencies
- Fully Stocked Warehouse & Trucks
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