An NSF mark on a commercial sink means an independent body has checked that its materials, design and construction meet a food equipment sanitation standard. Under the FDA Food Code, equipment certified by an ANSI-accredited program is treated as meeting the code’s materials and construction rules, which is why health departments look for it.
Shop the equipment in this article: three-compartment sinks, hand sinks and mop sinks. Freight is included on every order.
This guide explains what the mark covers, what it does not, and how to check the sink you are about to buy.
What the Food Code says
The Food Code sets rules for the materials food equipment is made from and how it is designed and built, so it can be cleaned. It then adds a shortcut: food equipment that is certified or classified for sanitation by an American National Standards Institute (ANSI) accredited certification program is deemed to comply with those materials and construction sections. NSF is the best known of these programs in food service.
The code does not say every sink must carry the NSF mark. In common practice, though, many health departments ask for certified equipment on the plan review for a new or remodeled kitchen, because certification answers the cleanability question without an inspector checking every weld. Your local health department has the final say, so ask them what they accept before you order.
What NSF certification covers on a sink
Certification is about the equipment itself:
- Materials that are safe for contact with food and stand up to cleaning chemicals.
- Surfaces that are smooth and easy to clean, without gaps and crevices where food and water collect.
- Construction that can be kept clean in daily use.
It does not cover how the sink is installed, whether it is the right size or number of compartments for your health department, whether it has a backflow device, or how staff use it. A certified sink installed without the required air gap or drain connection can still fail inspection.
Which of our sinks list NSF
Our own stainless sink line lists NSF certification on its product pages, for example:
- Our 36 in. three compartment drop-in commercial kitchen sink.
- The S2C-202014-RL-NF 80 in. two compartment sink and the compact S2C-141611-NF.
- Prep and utility sinks in 18 gauge type 304 stainless with 18 x 18 x 12 in. bowls.
- One compartment mop sinks in 18 gauge type 304 stainless.
- The WHS-1212 12 x 12 in. hand sink and the underbar hand sink with soap and towel dispensers.
Some faucets list NSF too, such as the wall mounted pre-rinse faucet and the 4 in. center wall mount gooseneck faucet. Each product page states it in the specifications, usually on an “Approval” line. If a page does not list NSF, do not assume it.
How to check a sink before you buy
- Read the specifications on the product page for an NSF or “Approval” line.
- Check the model number exactly. Certification belongs to specific models, so a similar looking sink may not be covered.
- Look for the NSF mark or label on the sink when it arrives, and keep it in place.
- If your health department wants proof, NSF publishes a public listings search on its own website, where you can look up the maker and model.
- Keep the spec sheet with your plan review documents.
NSF, stainless grade and gauge are separate things
NSF certification does not tell you the grade or thickness of the steel. Two certified sinks can be made of different grades. Type 304 resists corrosion better than type 430, which matters for a sink that sits wet all day and sees sanitizer. Our full size sinks use 18 gauge type 304 stainless. For more on the difference, read 304 vs 430 stainless steel in restaurants.
Where it comes up most
- Warewashing: the three compartment sink is usually the first sink an inspector looks at on plan review.
- Handwashing: hand sinks are small and easy to buy from the wrong place. Our hand sinks list their approvals on each page.
- Prep: a dedicated prep sink for produce and thawing should meet the same standard as the dish sink.
- Bar: underbar sinks and hand sinks behind the bar are food equipment too, even if no food is cooked there.
Faucets and parts matter too
A faucet that touches drinking water should be lead free, and many health departments look for certified plumbing fittings as well as certified sinks. Check the faucet’s page for its approvals. Our commercial sink faucets list theirs where the maker provides them.
Common mistakes
- Assuming every stainless sink is certified.
- Buying a residential or hobby sink for a commercial kitchen because it looks similar.
- Removing the label during installation, then having nothing to show the inspector.
- Mixing up the sink’s certification with approval of the whole installation.
Frequently asked questions
Is NSF certification required for a restaurant sink?
The Food Code requires equipment to meet its materials and construction rules, and treats ANSI-accredited certification such as NSF as meeting them. Many health departments ask for certified equipment. Check with yours.
Does NSF certified mean the sink will pass inspection?
No. Certification covers the sink itself. Size, compartments, plumbing, air gaps and use are checked separately.
Where do I find the NSF mark on a sink?
On the sink’s own label or marking, and on the product page under the approvals or specifications.
Which equipment besides sinks should be certified?
Our article on what restaurant equipment needs to be NSF covers tables, refrigeration and more.
Next steps
Compare certified models in our commercial restaurant sinks range. Freight to the 48 contiguous states is included in the price, and non-powered items such as sinks have a 14 day return window.