In most of the United States, yes. The FDA Food Code requires every food establishment to have at least one service sink, or one curbed cleaning facility with a floor drain, for cleaning mops and disposing of mop water.
For floor cleaning and bucket filling, see this one compartment mop and utility sink.
What the Food Code says
Section 5-203.13 of the 2022 FDA Food Code covers the service sink, which is the code’s name for a mop sink. It requires at least one service sink or one curbed cleaning facility equipped with a floor drain. The fixture must be conveniently located for cleaning mops and similar wet floor cleaning tools and for disposing of mop water and similar liquid waste. The same section says toilets and urinals may not be used as a service sink.
The Food Code does not set a size for the mop sink and does not give a maximum distance from the kitchen. It only says “conveniently located”.
Why other sinks cannot do the job
Mop water is the dirtiest liquid in the building. The Food Code keeps it away from every sink that touches hands, food or dishes. Section 5-205.11 says a hand sink may not be used for anything but handwashing. Section 2-301.15 says employees may not wash their hands in a service sink. Pouring mop water into a prep sink or a three compartment sink puts floor soil where food and clean utensils go, and inspectors write that up.
Where the rule varies
Each state adopts its own version of the Food Code, and some add exceptions or details. A few examples:
- Minnesota’s rule exempts food carts, special event food stands, temporary food establishments and similar portable operations from the service sink requirement.
- Florida’s Department of Health rule for mobile food units says those units are not required to have mop sinks.
- Texas and California both accept either a service sink or a curbed cleaning facility. California also requires hot and cold water at the fixture.
- Some local health departments ask for the mop sink to be placed away from food preparation surfaces, and some expect a backflow preventer on the faucet and a rack or hooks for hanging mops.
Small operations such as kiosks, or tenants that share a building janitor closet, are sometimes approved with an alternative. That is a local decision. Your local health department has the final say on whether you need a mop sink and where it can go, so confirm with your inspector before you buy.
Common inspection problems
- No mop sink at all, with mop water going down a hand sink, a dish sink or a toilet.
- A mop sink blocked by stored chemicals, buckets or boxes so staff stop using it.
- Wet mops left sitting in the bucket or the basin. Health codes commonly require mops to be hung to air dry so they do not soil walls, equipment or supplies.
- A hose left attached to the faucet with no backflow protection.
- No hot water at the fixture where the local code calls for it.
- The mop sink installed beside a prep table or clean dish storage with nothing to stop splash.
- The mop sink used for something else, such as thawing food or washing equipment.
What to buy
There are two usual styles. A floor mounted basin sits low so a mop bucket can be tipped into it without lifting. A free standing utility sink on legs is easier on the back for filling buckets and can fit a tight closet. Ask your inspector whether either style is preferred locally.
- Stainless steel mop sinks in a floor mounted or free standing style, sized to fit your janitor closet or back corner.
- Service faucets with a vacuum breaker, a hose thread and a pail hook. Confirm the backflow device with your plumber.
- Wall shelves or wire shelving nearby for chemicals, kept away from food and clean utensils.
Express KitchQuip’s own stainless steel mop sinks are NSF certified, and freight to the 48 contiguous states is included in the price. No fixture can guarantee an inspection result, so show your inspector the location and plumbing plan before you order.