Commercial & Industrial Plumbing.
The region's most capable plumbing team. From high-volume retail rollouts and multi-family developments to complex medical gas systems.
Workforce
Self-Performed
Experience
Division Leadership
Bonding
Unlimited Capacity
License
AZ ROC #317290
Commercial Construction
Ground-up hotels, multi-family developments, and retail shells. High-volume rough-in capabilities for aggressive commercial schedules.
- Hotels
- Multi-Family
- Retail Shells
Restaurant Infrastructure
Grease interceptors, high-capacity water systems, and kitchen rough-ins. Built for QSR rollouts like Starbucks, Firehouse, and national chains.
- Grease Interceptors
- Kitchen Rough-Ins
- High-Capacity Water
Medical Gas Systems
NFPA 99 certified installers for dental offices, medical clinics, and laboratory facilities requiring oxygen, nitrous, and vacuum systems.
- NFPA 99 Certified
- Dental & Medical
- Vacuum Systems
Underground Utilities
Complete sewer mains, storm drains, and lift station infrastructure from excavation to final connection and testing.
- Sewer Mains
- Storm Drains
- Lift Stations
Industrial Piping
Process piping and compressed air systems for manufacturing environments. Welded, grooved, and fusion systems.
- Process Piping
- Compressed Air
- HDPE Fusion
Backflow & Service
Certified testing, repair, and installation of backflow prevention assemblies. 24/7 emergency response for commercial clients.
- Certified Testing
- Repairs
- 24/7 Emergency
Plan to Pressure Test
Every project follows a controlled sequence — from initial coordination through final testing. No hand-offs, no gaps.
Takeoff & Coordination
Detailed material takeoff, shop drawing review, and clash detection before a single pipe ships to site.
Prefabrication
Riser assemblies, bathroom groups, and rack systems built in-shop for faster field installation and zero waste.
Field Execution
Underground, rough-in, and top-out performed by our own crews. One chain of command from excavation to trim.
Test & Commission
Pressure testing, backflow certification, and final inspection — all handled in-house before turnover.
Division Leadership
With 40+ years of experience, Greg has managed plumbing systems for every major builder in Southern Arizona. From hotel rollouts to retail shells, he optimizes the plan before we break ground.
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Plumbing Division Manager
Greg Williamson
EMAIL: greg@itdgconstruction.com
DIRECT: (520) 444-6985
We own the excavators, fusion machines, and trenching equipment other plumbing contractors have to rent. That means same-day mobilization and zero schedule dependencies on third-party vendors.
Excavators
Deep Trenching
Fusion Machines
HDPE Fusion
ProPress/MegaPress
Rapid Connections
Jetters
Line Clearing
OSHA Competent Persons
Trench work is inherently hazardous. Our certified crews follow strict protocols to ensure zero cave-in incidents.
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Tucson Commercial Plumbing — In-House
ITDG holds an Arizona CR-37 plumbing license and operates as a full-service commercial plumbing contractor Tucson with W-2 plumbers on staff — not subcontracted labor. Our in-house plumbing division handles the complete commercial scope: ground-up new construction, tenant improvements, medical gas systems, backflow prevention, and emergency service across Southern Arizona.
Why does in-house plumbing matter? Because underground is always on the critical path. When the plumbing contractor Arizona general contractors rely on is a subcontractor, one missed day underground delays every trade behind it. Our model eliminates that risk entirely. As a licensed plumber Tucson project managers trust, we control the schedule from slab to fixture — no excuses, no finger-pointing between trades.
From Underground to Final Fixture
Most plumbing contractors handle one phase and hand off the rest. Our crews execute the full lifecycle: commercial plumbing installation from underground rough-in, top-out, and trim through final pressure testing and inspection. Every phase is performed by ITDG employees under a single chain of command, which means zero handoff delays and direct accountability at every stage.
All excavation work follows strict OSHA-compliant trench safety protocols — competent persons on every dig, shoring on every trench. Because our plumbing team works alongside our electrical and HVAC crews on the same projects, we eliminate the inter-trade coordination failures that plague multi-sub jobs. As an plumbing contractor Arizona building owners count on, we also provide emergency plumbing commercial response and maintain a fleet of underground plumbing contractor equipment ready to mobilize same-day.
Request Plumbing Support
Whether you're an owner, GC, or engineer—our plumbing division is ready to deploy. Get a capability statement or discuss your project scope.
No obligation. We'll scope your project and provide a detailed proposal.
