Usually not. Most health departments expect a three compartment sink even when you install a commercial dishwasher, and only some will approve a machine in its place.
What the FDA Food Code says
Food Code section 4-301.12 says a sink with at least three compartments shall be provided for manually washing, rinsing and sanitizing equipment and utensils. The same section says the compartments must be large enough to immerse the largest equipment and utensils, and that anything too large for the sink must go through a warewashing machine or approved alternative equipment.
The section also allows alternative manual warewashing equipment where there are special cleaning needs or constraints and the regulatory authority has approved it. A two compartment sink is one of the listed alternatives, with conditions attached.
Notice what the section covers. It is written around manual warewashing. It does not include a blanket statement that a dish machine removes the need for the sink, which is why the answer depends on how your state adopted the code and how your inspector reads it.
How states and counties differ
The Food Code is a model. Each state adopts its own version, and local health departments publish their own plan review rules. Published examples show how wide the range is:
- Georgia’s state food service design manual calls the three compartment sink the minimum requirement for warewashing and treats a machine as an addition to it.
- One county health district in Washington State states in its equipment requirements that an automatic dishwasher does not replace the three compartment sink.
- Minnesota’s rule lets the regulatory authority allow mechanical warewashing equipment in place of the three compartment sink, provided the machine can handle the largest item to be washed.
- One Wisconsin county plan review guide lists either a three compartment sink or a commercial dish machine for dishwashing.
Your local health department has the final say, so confirm in writing before you buy a machine or leave a sink off your plans.
Why most kitchens keep both
These are practical reasons, not code citations:
- Large items. Stock pots, sheet pans, mixer bowls and cutting boards often do not fit in an undercounter or door type machine.
- Breakdowns. If the machine fails during service and there is no approved way to wash, rinse and sanitize by hand, you may have to stop using multiuse utensils until it is repaired.
- Scraping and soaking. Heavily soiled items usually need to be scraped or prerinsed before they go in a machine, and that takes a sink or a prerinse station.
- Bars. A bar that washes glassware by hand needs its own compartment sink at the bar, no matter what the kitchen has.
Common problems
- Sizing the sink to the space instead of the cookware. The bowl has to fit your largest item, so measure your biggest pot or pan first.
- No drainboards. Many jurisdictions require drainboards or equivalent space for soiled items and for air drying. Check what yours expects on each side.
- Using the three compartment sink for handwashing, food prep or mop water. Each of those jobs normally needs its own fixture.
- Assuming the previous tenant’s setup is approved. A change of owner or a remodel can trigger a new plan review under current rules.
What to buy
If your health department requires both, plan the dish area as one line: soiled landing, sink, machine, clean landing.
- Compartment sinks with three bowls sized to your largest pot or pan, with drainboards if your plan review calls for them. Express KitchQuip’s own stainless steel sinks are NSF certified.
- Dishtables for the soiled and clean sides of the dish machine.
- Faucets and a prerinse unit that reach every bowl.
- Hand sinks near the dish area, since the warewashing sink cannot double as one.
- Underbar sinks for hand washing glassware at the bar.
Freight to the 48 contiguous states is included in the price.