Restaurant Plumbing

Plumbing for Food Service That Stays Open

Restaurant plumbing is a different animal from standard commercial work. Health codes are stricter, the consequences of a problem are immediate (lost revenue, bad reviews, potential health department action), and equipment runs constantly under high abuse. Fixtures that last 20 years in an office last 5 years in a busy kitchen.

Doro Plumbing serves restaurants and food service operations across southeast Wisconsin with an experienced approach that minimizes disruption to your service hours and keeps you compliant with Wisconsin DATCP ATCP 75 food code.

What We Handle

Three-compartment sinks and prep sinks. Installation, repair, and replacement, including the indirect waste connections required by code.

Pre-rinse spray valves and faucets. Repair and replacement of high-use kitchen fixtures.

Floor drains and trench drains. Installation, repair, and unblocking. Critical for kitchen sanitation.

Hand sinks. Code requires specific configurations and locations. We install to spec and document for the health department.

Restroom plumbing. High-use commercial restroom fixtures, flush valves, urinals, and the issues that come with them.

Water heaters and booster heaters. Sized for restaurant demand. Sanitation requires 180°F at the dish machine and proper recirculation to fixtures.

Soda line and ice machine connections. Including the backflow protection required for these cross-connections.

Equipment plumbing connections. Dishwashers, ice machines, beverage equipment, steam tables, anything that ties to water or drain.

Septic-side repair for restaurants outside municipal sewer service. We coordinate with septic specialists for tank-side service.

Wisconsin Restaurant Code Requirements

Wisconsin DATCP ATCP 75 has specific requirements for food service plumbing that differ from general commercial plumbing. Highlights:

• Indirect waste required on equipment that handles food contact (sinks for food prep, ice machines, food storage equipment)
• Backflow protection on all cross-connections (soda systems, dish machines, water filtration, irrigation)
• Hand sink locations dictated by proximity to food handling areas
• Air gaps required at specific fixtures
• Hot water temperature minimums at sanitation sinks and dish machines
• Grease interceptor sizing per fixture units and operation volume

We know the Wisconsin code well and work to it on every restaurant project. If you’ve been cited for a code violation, we can typically resolve it quickly with the right corrections.

Tenant Build-Outs

If you’re opening a new restaurant or moving into a new space, we work with you, your GC, and your kitchen designer from rough-in through final inspection. Restaurant build-outs have more plumbing than most commercial spaces, and getting the rough-in right is the difference between a smooth opening and a series of expensive corrections.

Typical scope:

• Coordinate with kitchen designer on equipment plumbing requirements
• Rough-in supply, drain, vent, and gas to all kitchen equipment locations
• Install grease interceptor (sized and located in coordination with the municipality)
• Restroom rough-in for code compliance
• Set all fixtures and equipment connections during finish phase
• Coordinate with health department for pre-opening inspection
• Provide compliance documentation for permit closeout

Ongoing Service for Active Restaurants

For active restaurants, our most valued contribution is showing up fast when something goes wrong and keeping it working between service calls through preventive attention. We work with restaurant operators on:

• Routine inspection of fixtures, valves, and connections
• Replacement of high-wear parts before they fail
• Backflow testing and certification submittal
• Water heater and booster service
• Coordination with grease haulers for scheduled grease interceptor service
• Repair of damaged or aging fixtures

If your operation is a good fit for a preventive program, see our preventive maintenance page for how scheduled service works.

Emergency Service

For active restaurants, plumbing emergencies happen at the worst times: Friday night during dinner rush, Sunday brunch, the start of a private event. We respond fast for restaurant emergencies and have experience triaging the situation, clearing the immediate problem so you can keep serving, then coming back to address the root cause when service hours allow.

Doro Plumbing · (262) 229-5632 · Hartford, WI