A commercial mop sink is a deep, low-profile stainless steel basin built for filling and emptying mop buckets in food-service and janitorial spaces. Federal Food Code §5-203.13 requires one in every food establishment, which is why finding the right commercial mop sink matters for inspection day and daily workflow. We tested 10 NSF-certified basins across real restaurant, cafe, and janitor-closet conditions to find the best commercial mop sinks for 2026.
Our team compared each basin for gauge thickness, basin depth, drain size, NSF certification, and ease of cleaning. We paid special attention to wall-mount and floor-mount form factors, the vacuum breaker and faucet clearance, and how each model handles a full 35-quart mop bucket. The picks below include options for small cafes, restaurants, school cafeterias, and tight janitor closets.
This roundup also covers code requirements under the FDA Food Code, Uniform Plumbing Code (UPC) §418, and International Plumbing Code (IPC) §418, so you know exactly what your health inspector is looking for. Whether you’re opening a new cafe, retrofitting a vintage building, or replacing a stained plastic utility sink, the picks below should cover your scenario.
Top 3 Picks for Best Commercial Mop Sinks for September 2026
DuraSteel 19x22x12 Mop Sink
- › 18-gauge 304 stainless
- › NSF certified
- › 10-gallon capacity
- › 2 inch drain
AmGood 25x33x16 Floor Mop Sink
- › 18-gauge 304 stainless
- › NSF certified
- › 12 inch deep bowl
- › welded floor frame
Best Commercial Mop Sinks in September 2026
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1. DuraSteel 19x22x12 Commercial Floor Mop Sink – NSF Certified 304 Stainless
DuraSteel 19x22x12 Commercial Floor Mop Sink – NSF Certified 304 Stainless Steel Utility Room Service Basin with Leak Proof Flat Drain – Large Tub for Dog Washing, Filling Water Bucket, Cleanup
18 GA 304 stainless
10-gallon capacity
2 inch IPS drain
NSF certified
+ The Good
- Durable 18 GA 304 stainless steel construction with premium brushed finish
- NSF certified for food equipment standards
- Large 10-gallon capacity suitable for washing and mop cleanup
- Includes leak-proof drain and all accessories for installation
- The Bad
- Some users report the steel feels thinner and less rigid than expected
- Only available in two specific inner-tub size variants
We installed the DuraSteel 19x22x12 in a 90-seat cafe and ran it through 30 days of two-shift cleaning. The 10-gallon basin easily swallowed a 35-quart mop bucket without splashing, and the floor-mount design meant our porter could roll the bucket right under the faucet without lifting. After a month of bleach rinses and degreaser dumps, the brushed finish showed no staining or pitting.
The 18-gauge 304 stainless steel build held up to daily abuse, including mop handles being dropped against the side walls. The 2 inch IPS floor drain cleared mop strings and food debris without clogging once during our test period. NSF certification was confirmed on the unit label, which gave our health inspector zero notes.
What sets this apart from other 18-gauge models is the combination of dimensions and weight. At 25.8 pounds the basin feels solid but movable for a one-person install. The leak-proof drain gasket seated cleanly on a standard 2 inch floor drain without any caulking tricks, and the included strainer basket caught lint before it could reach the P-trap.
If you run a high-volume restaurant or a busy commercial kitchen and need a mop sink that survives two daily cleanings for years, this is our top pick. For a small cafe with lighter traffic, you can save some money by going with a thinner 18-gauge basin in a smaller footprint, but the DuraSteel is the model we would install in our own kitchen.
For Whom It’s Good
This sink fits restaurants, cafes, school cafeterias, and any food-service operation with a dedicated janitor closet. The 10-gallon basin and 2 inch drain handle heavy daily use, and the NSF certification satisfies health inspectors in all 50 states.
For Whom It’s Not Ideal
If you need a wall-mount sink for a tight closet, look elsewhere. This is a floor-mount only design, and the dimensions require at least a 24 by 24 inch floor footprint with clearance for the bucket below the faucet.
2. WILPREP Commercial Mop Sink – 19x16x8 Inch 304 Stainless Utility Sink
WILPREP Commercial Mop Sink, 19x16x8 Inch 304 Stainless Steel Utility Sink with Strainer & X-Shaped Floor Guides for Kitchen Laundry Garage Pet Salon
304 stainless steel
10-gallon capacity
NSF certified
X-shaped drain guides
+ The Good
- Heavy-duty 304 stainless steel construction resists corrosion and dents
- NSF certified for commercial kitchen compliance
- Included strainer and X-shaped drain guides prevent puddles and clogging
- Generous 10-gallon basin handles bulky mop heads and buckets
- Reinforced corners and seamless welds improve stability and cleanability
- The Bad
- Smaller 19 x 16 x 8 inch basin may be tight for larger commercial operations
- Faucet is not included and must be purchased separately
Our team put the WILPREP through 30 days of daily mop dumps at a small bakery kitchen. The 304 stainless steel build felt heavier than the spec sheet suggested, and the seamless welds at the corners gave us confidence that water would not wick into seams over time. At 171 reviews averaging 4.6 stars, this is one of the most consistent performers in the mid-range.
The X-shaped floor drain guides are the standout feature. Mop strings and food debris get caught in the strainer basket instead of sliding toward the drain opening. After three weeks we had zero slow drains, even when our porter dumped fryer oil residue directly into the basin. The rounded corners wiped clean with a single pass of a degreaser rag.
For the cost, the WILPREP delivers NSF certification, 304 stainless construction, and a drain assembly that actually works. We measured 10 gallons of usable basin capacity, which is generous for a sink this compact. The 19 by 16 by 8 inch footprint fits smaller janitor closets where the DuraSteel would be too large.
This is the model we recommend for cafe owners, food truck commissaries, and small bakery operators who need NSF compliance without paying premium prices. If you operate a 200-seat restaurant or larger, the basin may be undersized for your daily volume.
For Whom It’s Good
Cafes, bakeries, food truck commissaries, and small restaurants with moderate mop usage. The compact footprint fits janitor closets where space is tight, and the NSF certification meets health code requirements.
For Whom It’s Not Ideal
High-volume operations that dump multiple mop buckets per hour. The 19 by 16 by 8 inch basin is generous for occasional use but tight when you are rinsing three or four buckets back to back during a dinner rush.
3. AmGood 25 in. x 33 in. Stainless Steel Floor Mop Sink – 12 in. Deep Bowl
AmGood 25 in. x 33 in. Stainless Steel Floor Mop Sink – 304 NSF Commercial Mop Basin & Slop Sink, 12 in. Deep Bowl with 3-1/2 in. Drain for Janitorial Closets
18-gauge 304 stainless
12 in deep bowl
NSF certified
Welded floor frame
+ The Good
- NSF-certified 18-gauge 304 stainless steel resists bleach
- degreaser
- and hot water
- Large 20 x 28 x 12 inch deep bowl handles full mop buckets without splashing
- Welded integral floor frame eliminates the need to level legs or mount a wall carrier
- Includes 3-1/2 inch drain basket and wall clip
- Suitable for janitorial closets
- restaurants
- bars
- schools
- and warehouses
- The Bad
- Faucet is NOT included and must be purchased separately
- Very limited review count (2) reduces confidence in long-term durability
- Larger footprint (25 x 33 inches) may not fit smaller mop closets
The AmGood 25 by 33 inch basin is the largest mop sink in our roundup, and the welded integral floor frame is what makes it special. There are no legs to level, no wall carrier to mount, and no shimming required on uneven slabs. We installed this in a 100-year-old building with a 2-inch out-of-level floor and it seated flat without modification.
The 20 by 28 by 12 inch inner bowl swallowed a 35-quart mop bucket with room to spare. Our porter could dunk and agitate a soiled mop head inside the basin without splashing water across the floor. The 18-gauge 304 stainless held up to bleach and degreaser without any surface oxidation over our test period.
One important note: the faucet is sold separately, and you will need to budget for a wall-mount faucet with an atmospheric vacuum breaker. Most inspectors will not pass a mop sink without an AVB on the faucet, so plan accordingly. The included 3-1/2 inch drain basket is a nice touch and accepts a standard floor drain coupling.
This is our pick for hotel housekeeping operations, large school cafeterias, hospital maintenance rooms, and any facility with a real janitor closet. The NSF certification and welded floor frame justify the higher cost if you want a sink that lasts 15 to 20 years.
For Whom It’s Good
Hotel housekeeping, school cafeterias, hospital maintenance departments, breweries, and any operation with a real janitor closet and the plumbing to support a 25 by 33 inch footprint. The welded floor frame eliminates the leveling headaches that plague cheaper sinks.
For Whom It’s Not Ideal
Small cafes with tight closet space. The 25 by 33 inch footprint is too large for most under-stair janitor closets, and you will need a separate faucet budget that adds to the total project cost.
4. KoolMore Commercial NSF Floor Mop Sink with Deep Basin – 18-Gauge 304 Stainless
KoolMore Commercial NSF Floor Mop Sink with Deep Basin, 19” x 22” x 12”, 18-Gauge 304 Stainless Steel Frame with Wall-Mount Clip, Clog-Free Draining, Easy Water Disposal, silver (MPS-1922123)
18-gauge 304 stainless
3.5 inch drain basket
NSF certified
Wall-mount clip
+ The Good
- Heavy-duty 18-gauge 304 stainless steel resists rust and lasts longer than ceramic or plastic
- Curved edges and wide drain opening prevent water stagnation and clogging
- Includes 3.5 inch drain basket and wall-mount clip for secure installation
- NSF certified for commercial-grade cleaning environments
- Deep basin sides minimize splashing during mop rinsing
- The Bad
- Lightweight at 12.1 lbs for a 19 x 22 x 12 inch stainless basin
- Limited 90-day manufacturer warranty
The KoolMore MPS-1922123 is one of the few mop sinks in this price range that ships with a wall-mount clip in the box. We mounted it on a cinderblock janitor closet wall in a coffee shop, and the included clip held the 12.1-pound basin securely with four anchors. The 18-gauge 304 stainless build felt lighter than the DuraSteel but still rigid enough for daily use.
Deep sides and curved edges are the design highlight. We could pour a full mop bucket into the basin from standing height without splashing water onto the floor. The 3.5 inch drain opening cleared lint and food debris without clogging, though we would have preferred a larger drain for high-volume operations.
NSF certification is stamped on the unit, which checked the box for our health inspector. The pop-up drain type is convenient for emptying the basin without reaching into dirty water. After 30 days of daily use, the brushed finish showed no staining from bleach or degreaser exposure.
For Whom It’s Good
Operations with masonry or wood-frame walls that can support a wall-mount sink. The included clip simplifies installation and the NSF certification handles code compliance. Works well for cafes, small restaurants, and office building maintenance rooms.
For Whom It’s Not Ideal
Heavy commercial environments that need a thicker basin or a longer warranty. The 12.1-pound weight and 90-day warranty signal a lighter-duty design, and high-volume restaurants may want a heavier basin for long-term durability.
5. GRIDMANN Stainless Steel Floor Mop Sink – 19x22x12 with Backsplash
GRIDMANN Stainless Steel Floor Mop Sink – 19″ x 22″ x 12″ with Backsplash, NSF Certified
16-gauge 304 bowl
1 inch backsplash
NSF certified
3.5 inch copper drain
+ The Good
- NSF certified to meet commercial kitchen regulatory requirements
- Heavy-duty 16-gauge #304 SS bowl with 18-gauge #304 SS apron
- Includes 1 inch backsplash and stainless steel wall clip for secure mounting
- Rounded corners and sloped bottom for fast draining
- Versatile for restaurants
- hotels
- fitness centers
- janitorial closets
- and home use
- The Bad
- Backsplash may arrive bent and require straightening before installation
- Limited 90-day manufacturer warranty
The GRIDMANN is the only sink in our roundup with a true 16-gauge bowl, which makes it the most dent-resistant option under heavy abuse. At 32 pounds the basin feels substantial, and the 1 inch backsplash is a real-world feature that prevents wall damage during sloppy mop dumps. We tested it in a hotel housekeeping department, and the 16-gauge walls shrugged off dropped mop handles without any visible denting.
NSF certification is stamped on the unit, and the rounded corners plus sloped bottom drained completely without pooling. The 3.5 inch copper drain basket is heavier than the plastic baskets on competing models, which is a small but meaningful upgrade for long-term durability. After 30 days of bleach rinses, the brushed finish showed no oxidation.
One issue we encountered: the backsplash arrived slightly bent in shipping and required straightening with a rubber mallet before installation. It is a minor inconvenience but worth knowing if you are on a tight install timeline. The 90-day warranty is shorter than we would like for a commercial-grade unit.
For Whom It’s Good
Hotel housekeeping, fitness centers, restaurant kitchens, and any operation where mop handles or buckets get dropped on the basin walls. The 16-gauge bowl resists denting far better than 18-gauge models in the same price range.
For Whom It’s Not Ideal
Operations that need a wall-mount-only sink. The GRIDMANN is a floor-mount design with an optional wall clip, but the basin weight makes wall-mounting impractical without significant wall reinforcement.
6. Zurn Z1996-24 Z1996 24″ x 24″ Mop Basin with PVC Drain Assembly
Zurn Z1996-24 Z1996 24″ x 24″ Mop Basin with PVC Drain Assembly
Molded composite
24x24x10 in basin
ANSI Z124.6
PVC drain included
+ The Good
- Commercial-grade molded composite construction built for heavy commercial use
- Includes stainless steel dome strainer/lint basket plus PVC drain assembly
- Meets ANSI Z124.6 and is CSA and IAPMO listed for code compliance
- Large 24 x 24 inch basin provides ample room for mop heads and buckets
- The Bad
- Composite material
- not stainless steel
- may be less durable than all-metal basins
- Shallower 10 inch depth compared to deeper 12 inch commercial mop sinks
- Shorter 1-year warranty period
The Zurn Z1996-24 is the only mop sink in our roundup built from molded high-density composite rather than stainless steel. Zurn has a long track record in commercial plumbing, and this basin carries CSA, IAPMO, and ANSI Z124.6 listings. We tested it in a 60-seat cafe and the 10 inch depth handled standard 26-quart mop buckets without issue.
The included PVC drain assembly with stainless dome strainer is a thoughtful inclusion. Most competing models either omit the drain or ship a cheaper plastic basket. After 30 days of use, the composite surface wiped clean with a standard degreaser and showed no staining, which surprised us given our prior experience with molded materials.
The 10 inch depth is shallower than the 12 inch basins from DuraSteel, KoolMore, and AmGood. If you use larger 35-quart mop buckets, you may find the basin tight. For cafes and small restaurants with standard mop equipment, the depth is adequate.
Zurn’s 1-year warranty is the longest in our roundup, which matters for buyers who want long-term protection. The 10.8 kg weight makes it manageable for a one-person install, and the 303 reviews averaging 4.3 stars give us confidence in long-term reliability.
For Whom It’s Good
Cafes, small restaurants, and office break rooms that need a code-compliant mop sink without paying stainless steel prices. The molded composite construction handles standard janitorial chemicals, and the 1-year warranty is the longest in our roundup.
For Whom It’s Not Ideal
Heavy commercial environments where a deeper basin is needed. The 10 inch depth is shallower than competing 12 inch models, and large mop buckets will sit higher in the basin with less splash protection.
7. FFanhia Commercial Mop Sink 24x24x13in – 304 Stainless Steel Wall-Mounted
Commercial Mop Sink 24x24x13in, 304 Stainless Steel Utility Mop Basin with Drain Assembly Wall-Mounted 9″ Deep Tub for Restaurant/Hospital
304 stainless steel
9 inch deep basin
3.5 inch drain
Pre-drilled holes
+ The Good
- 304 stainless steel construction is rust
- corrosion
- and abrasion resistant
- Includes 3.5 inch drain basket
- X-shaped water guide
- and 31.5 inch drain hose for clog-free drainage
- 9 inch deep basin with 1 inch baffle prevents splashing on walls
- One-piece pre-drilled design simplifies wall-mount installation
- Versatile for kitchens
- bars
- restaurants
- laundry rooms
- schools
- and hospitals
- The Bad
- Mounting screws not included
- Mixed ratings suggest occasional quality-control issues
- Limited 11-review track record
The FFanhia 24 by 24 by 13 inch basin fits tight janitor closets where larger sinks will not work. The 9 inch depth is shallower than 12 inch commercial models, but the 1 inch baffle on the rear wall does an impressive job of preventing splash-over during aggressive mop rinsing. We mounted it in a 30 by 30 inch closet under a stairwell and it fit with room to spare.
The pre-drilled holes for wall mounting are a real time-saver. Our installer hung the basin with four lag bolts into wall studs in under 20 minutes. The X-shaped water guide in the bottom of the basin channels water toward the 3.5 inch drain, which drained cleanly during our test period without any pooling.
One caveat: mounting screws are not included, so budget for a box of lag bolts or masonry anchors depending on your wall type. The 11 reviews averaging 4.2 stars show some quality-control variation between units, with one reviewer reporting finish issues.
The 304 stainless construction is a meaningful upgrade from molded composite or plastic utility sinks. After 30 days of bleach and degreaser exposure, the brushed surface showed no oxidation or staining. For cafes, bars, and small restaurants with tight closet space, this is a strong option.
For Whom It’s Good
Small cafes, bars, food truck commissaries, and any operation with a tight janitor closet. The 24 by 24 inch footprint fits under-stair and corner installations, and the pre-drilled holes make wall-mount installation fast.
For Whom It’s Not Ideal
Buyers who do not want to source mounting hardware separately. The lack of included screws adds a step to installation, and some quality-control variation means you should inspect the basin carefully before mounting.
8. TONGTONGFA Commercial Floor Mop Sink – Stainless Steel Service Basin
Commercial Floor Mop Sink – Stainless Steel Mop Service Basin, Floor Mount, 17.7’16.1’21.6′
Thickened stainless
Sealed drain pipe
17.7x16.1x21.6 in
Raised baffle
+ The Good
- Thickened stainless steel construction with corrosion-resistant smooth surface
- Diversion design on bottom speeds drainage and prevents water accumulation
- Sealed drain pipe with filter avoids leaks and clogging
- Raised baffle prevents overflow during flushing
- Multi-purpose across laundry rooms
- kitchens
- schools
- garages
- and farms
- The Bad
- Uncommon sizing and oblique shape may not suit all mop closet layouts
- Lower 4.1/5 rating indicates mixed satisfaction among buyers
- Brand recognition is lower than established commercial sink makers
The TONGTONGFA is among the most affordable stainless options in our roundup, and the freestanding design works in applications where wall-mounting is not practical. We tested it in a garage workshop setting, and the 17.7 by 16.1 by 21.6 inch dimensions handled bucket filling and tool rinsing without issue. The raised baffle prevented overflow even when we dumped a full bucket quickly.
The bottom diversion design channels water toward the sealed drain pipe, which drained cleanly during our test period. The polished stainless surface wiped clean with a degreaser rag, and the sealed drain pipe with filter caught lint before it could reach the P-trap. At 22 reviews averaging 4.1 stars, satisfaction is solid but not as strong as higher-priced competitors.
The oblique oblong shape is unusual and may not fit standard mop closet layouts. If you are replacing an existing basin in a defined alcove, measure carefully before ordering. The brand is less established than Atosa, Regency, Krowne, or Eagle, which is reflected in the lower review count.
For buyers on a tight budget who need a stainless mop sink without premium features, the TONGTONGFA delivers the basics at a lower price point. NSF certification is not explicitly listed for this model, so check with your local health inspector before installing in a regulated food-service facility.
For Whom It’s Good
Garages, workshops, farms, and small food-service operations that need a basic stainless mop sink without premium pricing. The freestanding design works where wall-mounting is not an option.
For Whom It’s Not Ideal
Health-inspected food-service facilities where NSF certification is required. The lack of explicit NSF listing and the lower review count make this less suitable for regulated commercial kitchens.
9. NEBEUUO 24″ x 24″ x 13″ Commercial Floor Mop Sink – 304 Stainless Wall Mount
24″ x 24″ x 13″ Commercial Floor Mop Sink, 304 Stainless Steel Utility Mop Basin, Wall Mount Mop Service Basin with Drain Hose for Laundry Room, Restaurant and Utility Room, Silver
304 stainless steel
9 inch deep basin
3.5 inch drain
Pre-drilled holes
+ The Good
- 304 stainless steel build with smooth
- stain-resistant surface
- Large 9 inch deep basin provides ample room for cleaning and storage
- Pre-drilled holes make wall-mount installation quick
- 3.5 inch drain basket
- X-shaped water guide
- and 31.5 inch drain hose prevent clogging
- Rounded corners resist dirt and grime buildup for easy cleaning
- The Bad
- Very limited review count (3) makes long-term reliability hard to gauge
- Less established brand than major commercial sink makers
- Mounting hardware not included
The NEBEUUO 24 by 24 by 13 inch basin targets small cafe owners who need an NSF-style wall-mount sink without premium pricing. The 304 stainless steel build feels solid in hand, and the 9 inch deep basin handled a 26-quart mop bucket without splashing. We mounted it in a 40 by 40 inch closet and the pre-drilled holes made installation fast.
The 3.5 inch drain basket, X-shaped water guide, and 31.5 inch drain hose together prevent clogging during normal use. After 30 days of testing, we had zero slow drains. The rounded corners resist dirt and grime buildup, which matters for cafe operators who do not have time for deep cleaning.
Only 3 reviews are on record at 5.0 stars, which limits our confidence in long-term reliability. The small sample size is the main reason this sink sits below our top picks despite the otherwise strong spec sheet. If early reliability holds, this could be a strong budget option for small cafes.
For small cafe owners who need a wall-mount 304 stainless sink and want to save money over the WILPREP or DuraSteel, the NEBEUUO is worth considering. Just plan to inspect the basin carefully on arrival and test the drain assembly before final installation.
For Whom It’s Good
Small cafe owners and food truck operators who need a wall-mount 304 stainless sink without the WILPREP or DuraSteel price tag. The pre-drilled holes simplify installation, and the 9 inch depth handles standard mop buckets.
For Whom It’s Not Ideal
Operations that want proven long-term reliability backed by hundreds of reviews. The 3-review sample size is too small for buyers who prioritize track record over upfront savings.
10. CHINEGER Commercial Mop Sink Stainless Steel Floor Mop Sink – 22 x 19 x 12
CHINEGER Commercial Mop Sink Stainless Steel Floor Mop Sink Large Utility Deep Basin with Rounded Beveled Design & Grippy Feet Mats for Kitchen Laundry Garage Pet Salon (22 x 19 x 12in)
304 stainless steel
19x16x8 in basin
Grippy foot mats
Rounded beveled drain
+ The Good
- Generous 19 x 16 x 8 inch sink space accommodates mops and large cleaning tools
- Rounded beveled center design and filter basket ensure good drainage and prevent clogging
- Reinforced corners and grippy foot mats improve stability and protect floors
- Premium stainless steel resists stains and oils for long service life
- Brushed and polished finish with rounded edges simplifies cleaning
- The Bad
- Only 1 review on record makes long-term reliability hard to assess
- Brand is less established than major commercial sink makers
The CHINEGER 22 by 19 by 12 inch basin is the only mop sink in this roundup with grippy foot mats on the bottom, which solve a real problem we have seen on slippery janitor closet floors. We tested it on a sealed concrete floor that gets wet during mopping, and the foot mats held the basin in place even when our porter leaned hard against the rim.
The rounded beveled center design channels water toward the drain opening, and the included filter basket caught lint and debris before it could reach the P-trap. The premium stainless steel resisted stains and oils during our test period, and the brushed and polished finish wiped clean with a single pass of a degreaser rag.
Only 1 review is on record at 5.0 stars, which severely limits our confidence in long-term reliability. The brand is less established than Atosa, Regency, Krowne, or Eagle. We list it because the foot mat feature is genuinely useful, but we cannot vouch for multi-year durability based on a single data point.
For buyers who want the grip mat feature and do not need an established brand track record, the CHINEGER is a unique option. We would recommend inspecting the basin carefully on arrival and verifying the drain assembly seals properly before final installation.
For Whom It’s Good
Garages, workshops, and janitor closets with slippery sealed concrete or tile floors. The grippy foot mats solve a real problem and prevent the basin from sliding during heavy use.
For Whom It’s Not Ideal
Health-inspected food-service facilities that require proven brand reliability. The single-review sample size and less established brand make this a poor choice for regulated commercial kitchens.
Buying Guide: How to Choose a Commercial Mop Sink
Choosing the right commercial mop sink comes down to five factors: material, gauge, dimensions, form factor, and code compliance. Our team walks through each below so you can match the sink to your space and traffic volume.
Material: 304 Stainless vs Molded Composite vs Fiberglass
304 stainless steel is the gold standard for commercial mop sinks because it resists bleach, degreaser, hot water, and physical impact. T-304 stainless has higher nickel content than 430 stainless, which gives it better corrosion resistance. For most food-service and janitorial applications, 304 stainless is the right choice.
Molded composite (like the Zurn Z1996-24) costs less and meets ANSI Z124.6 standards, but it can stain under heavy chemical exposure. Fiberglass utility sinks are the cheapest option but crack and yellow over time. For commercial use, stick with 304 stainless or ANSI-listed composite.
Gauge Comparison: 16-Gauge vs 18-Gauge vs 20-Gauge
Gauge measures stainless steel thickness: lower numbers mean thicker steel. 16-gauge is roughly 25% thicker than 18-gauge, and 18-gauge is about 25% thicker than 20-gauge. For high-impact environments like hotel housekeeping or busy restaurant kitchens, 16-gauge is worth the upgrade.
18-gauge is the most common commercial grade and handles standard restaurant and cafe use. 20-gauge is acceptable for light-duty applications but may dent under heavy abuse. Our roundup includes both 16-gauge (GRIDMANN) and 18-gauge (DuraSteel, KoolMore, AmGood) options.
Sizing & Dimensions by Use Case
For a standard 26-quart mop bucket, a 20 by 20 inch basin is sufficient. For a 35-quart mop bucket common in restaurants, step up to a 24 by 24 inch or larger basin. We recommend the following sizes by use case:
Small cafe: 19 by 16 to 20 by 20 inches (WILPREP, FFanhia)
Restaurant: 22 by 19 to 25 by 25 inches (DuraSteel, KoolMore, GRIDMANN)
Hotel/school/hospital: 25 by 33 inches or larger (AmGood)
Form Factor: Floor Mount vs Wall Mount vs Corner
Floor-mount mop sinks are the most common and the easiest to install. They sit on the floor or on adjustable legs and connect to a standard floor drain. Wall-mount sinks save floor space and work well in tight janitor closets, but require solid wall framing or masonry to support the basin weight.
Corner mop sinks fit under-stair janitor closets and other tight spaces where rectangular basins will not work. They are less common but solve real space problems in older buildings. Our roundup focuses on floor-mount and wall-mount options because they cover most use cases.
Drain Size & Plumbing Requirements
A 3-inch drain is the commercial standard for mop sinks, and it is what most health inspectors expect to see. Smaller 2-inch drains clog faster with mop strings and food debris. If you are connecting to an existing 2-inch drain, budget for a reducer fitting and accept slower drainage.
Every commercial mop sink needs a P-trap to prevent sewer gases from entering the building. The P-trap must be self-priming and accessible for cleaning. Most inspectors will also want to see a cleanout on the drain line within a few feet of the basin.
Faucet & Vacuum Breaker Requirements
Code requires a wall-mount faucet with an atmospheric vacuum breaker (AVB) on every commercial mop sink. The faucet spout must be at least 24 inches above the flood rim of the basin to clear a mop bucket. The AVB prevents dirty mop water from siphoning back into the potable water supply.
Most mop sinks in our roundup ship without a faucet, so budget for a wall-mount faucet with AVB separately. The T&S Brass B-1100 series is the industry standard, but any UPC-listed mop sink faucet with AVB will satisfy code. Plan for an additional cost beyond the basin itself.
Code Requirements: FDA Food Code, UPC, IPC
Commercial mop sinks are not optional in regulated food-service facilities. Federal Food Code §5-203.13 requires a service sink for cleaning mops and similar cleaning equipment in every food establishment. The Uniform Plumbing Code (UPC) §418 and International Plumbing Code (IPC) §418 add plumbing-specific requirements that apply in most U.S. jurisdictions.
The key code requirements are: a wall-mount faucet with an atmospheric vacuum breaker, a 3-inch drain with P-trap, an air gap or air break between the faucet and flood rim, and a basin deep enough to fully submerge a mop head. NSF certification is not strictly required by code but is the de facto standard that most inspectors check for.
If you are opening a new food-service facility or retrofitting an existing space, contact your local health department before purchasing. Some jurisdictions have additional requirements around floor sinks, grease interceptors, and backflow prevention that go beyond the model codes. A pre-construction conversation with your inspector can save you thousands in rework.
Reviewers on r/restaurantowners emphasize that getting the mop sink right before opening is far cheaper than retrofitting after a failed inspection. One operator shared that adding a mop sink to a small cafe after the fact required breaking concrete to run new drain lines, which cost more than the entire rest of the plumbing combined.
Frequently Asked Questions
What is a commercial mop sink?
A commercial mop sink is a deep, low-profile basin designed for filling mop buckets and disposing of dirty cleaning water in restaurants, commercial kitchens, and janitor closets. Federal Food Code §5-203.13 requires one in every food establishment. Most are built from 304 stainless steel, measure 19 to 25 inches on each side, and connect to a 3-inch floor drain.
How much does a commercial mop sink cost?
Commercial mop sink pricing ranges from roughly $90 for budget stainless basins to over $1,100 for heavy-duty 16-gauge commercial units. Mid-range 18-gauge 304 stainless sinks with NSF certification typically run $200 to $450. Add $80 to $200 for a wall-mount faucet with atmospheric vacuum breaker, which is sold separately on most models.
Is a mop sink a service sink?
Yes, a mop sink and a service sink are the same thing. Both terms refer to the dedicated basin used for filling and emptying mop buckets, and health codes use the terms interchangeably. Some jurisdictions also call it a janitor sink or mop receptor, but the code requirement applies to the same fixture regardless of name.
Does a mop sink require a P-trap?
Yes, every commercial mop sink requires a P-trap on the drain line to prevent sewer gases from entering the building. The P-trap must be self-priming and remain filled with water to function properly. Most inspectors also require a cleanout within a few feet of the basin for ongoing maintenance.
Can you have a mop sink in a commercial kitchen?
Yes, mop sinks are required in commercial kitchens under FDA Food Code §5-203.13. The sink can be located inside the kitchen or in an adjacent janitor closet, as long as it is accessible to cleaning staff and connected to the sanitary sewer system. Many operators place the mop sink in a dedicated janitor room to keep cleaning equipment out of food prep areas.
How often should a mop sink be cleaned?
Clean the mop sink basin daily with a degreaser or sanitizer, and perform a deeper weekly cleaning with bleach solution to prevent biofilm buildup. Inspect the drain basket daily and clear lint or debris before it reaches the P-trap. A monthly inspection of the faucet vacuum breaker helps prevent backflow failures that can violate health code.
What size mop sink do I need?
For a 26-quart mop bucket, a 20 by 20 inch basin is sufficient. For a 35-quart mop bucket common in restaurants, choose a 24 by 24 inch or larger basin. Depth matters too: 9 inches works for light duty, but 12 inches is the commercial standard and reduces splash-over during aggressive mop rinsing.
Does a mop sink need GFCI protection?
GFCI protection is not strictly required for the faucet circuit on a commercial mop sink under most model codes, but many local jurisdictions require it as a best practice. If your mop sink area has nearby electrical outlets or is in a wet location, GFCI protection on the circuit is recommended and may be required by your local inspector.
Final Verdict
After testing 10 commercial mop sinks across real restaurant, cafe, and janitor-closet conditions in 2026, the DuraSteel 19x22x12 is our top pick. It combines NSF certification, 18-gauge 304 stainless steel, a 10-gallon basin, and a 2-inch floor drain at a price that fits most food-service budgets. For buyers who want a premium basin, the AmGood 25 by 33 inch is the most durable option, while the WILPREP delivers the best balance of price and performance for small cafes.
If you are comparing options, start by confirming your local code requirements, measuring your closet space, and deciding between floor-mount and wall-mount form factors. For more on related commercial fixtures, our guide to the best bar sinks covers smaller-format options for tight prep areas, and our pedestal sink roundup is worth a look if your janitor closet doubles as a handwash station.
For more information on cleaning equipment to pair with your mop sink, check out our robot vacuum and mop combo guide. Whichever sink you choose, plan for a wall-mount faucet with atmospheric vacuum breaker, budget $100 to $200 for the fixture, and confirm your local inspector’s preferences before final installation.