Fixtures: Rules in Phoenix-Area Cities
Fixture counts, showers, toilets, sinks and accessible fixture rules. City by city, then the Arizona law and model code behind it.
By City
| City | What the rule says |
|---|---|
| Maricopa County | How many hand sinks and mop sinks does a Maricopa County restaurant need, and where? Enough hand sinks that one is within approximately 25 feet of every workstation, prep and service area, bar, wait station, ice machine and ware washing area, with no door in the way. A splash guard is required within 24 inches of food contact or dish surfaces. A service (mop) sink is also required. |
| Phoenix | IPC 604.4, UPC 401.3 and IRC P2903.2 as amended by Phoenix: What flow rates are fixtures allowed? Under its 2024 amendments, Phoenix caps toilets at 1.28 gallons per flush, urinals at 0.5, private lavatory and sink faucets at 1.5 gpm and showerheads at 2.0 gpm. Buildings that meet exceptions 6 through 12 in the IPC and UPC, such as care facilities, tall buildings and some apartment buildings, use a second table with higher limits. |
| Scottsdale | Scottsdale Code 31-83: Bottle Fillers at Every Fountain and Water at Every Urinal Scottsdale Revised Code Sec. 31-83 adds two commercial fixture rules to the 2021 IPC. Every drinking fountain needs a water dispenser (bottle filler) built in or installed next to it. And where waterless urinals go in, every urinal rough-in still gets a water supply. Both apply to new work permitted under the IPC. |
| Mesa | What flow rates does Mesa allow for commercial faucets, toilets and urinals? Mesa's Table 604.4 caps a public non-metering lavatory at 0.5 gpm, a private lavatory and a sink faucet at 1.5 gpm, a shower head at 2.0 gpm at 80 psi, a urinal at 0.5 gallon per flush and a water closet at 1.28 gallons per flush. Plans are checked against these numbers. |
| Chandler | Chandler drinking fountain rules: when a water dispenser can replace one Yes, in most occupancies. Chandler City Code 29-4.3 lets a water dispenser connected to the potable water system stand in for the first required drinking fountain, and a dispenser can replace not more than 50 percent of the required fountains. It does not change the accessible-fountain rules under the ADA. |
| Glendale | Glendale commercial restroom fixtures: City Code 9-35 flow limits, automatic faucets and the 1.6 gallon footnote In new commercial, industrial and public buildings, and when replacing fixtures in existing ones, Glendale allows only lavatory faucets that close automatically after one quart, 2.0 gpm shower heads, 1.28 gallon toilets and 0.5 gallon urinals with no timed flushing. A violation carries a civil penalty of up to $100, then up to $250 for a second or later one. |
| Surprise | Drinking fountain requirements in Surprise, AZ: the 50 occupant rule and water coolers In Surprise, a building with an occupant load of 50 or fewer needs no drinking fountain, where the model code stops at 15. Restaurants that give free water in a cup need none. Everywhere else fountains are required, Surprise lets bottled water dispensers or water coolers stand in, and it struck the model code's 50 percent cap on that swap. |
Uniform Plumbing Code
All UPC sections- Model CodeUpdated Oct 2026UPC 804.1: Clothes Washer Standpipe and Drain RequirementsUPC Section 804.1 sets the height limits for a clothes washer standpipe. The standpipe must extend at least 18 inches and no more than 30 inches above its trap. The trap must be roughed in 6 to 18 inches above the floor, never below it. Each standpipe needs its own trap.
- Model CodeUpdated Jul 2026UPC Section 408: The Minimum Shower Size Phoenix Code RequiresUPC Section 408 requires a shower compartment to have at least 1,024 square inches of finished interior floor area and enough room to fit a 30-inch circle. That size must hold up to 70 inches above the drain. Phoenix enforces this figure under the 2024 UPC.
Need The Work Done To Code?
Call a licensed plumber who pulls the permit in your city and passes inspection the first time.

