Gilbert Plumbing Codes and Permits
Every Gilbert plumbing rule we cover, sorted by topic. Each page says what the rule means and links to the official Gilbert source.
- Adopted plumbing and gas codes
- 2018 IPC and 2018 IFGC with Gilbert amendments (Town Code 10-34 and 10-35, Ord. 2739). Gilbert does not use the UPC.
- Where the code is hosted
- Municode, Code of Gilbert, Arizona (Chapter 10 buildings, Chapter 66 utilities)
- Permit portal
- One Stop Shop for permits, payments and inspections
- Backflow program
- Town of Gilbert backflow prevention specialist, 480-503-6826
Permits and Inspections
Permits and Inspections in every cityBackflow Prevention
Backflow Prevention in every city- Local AmendmentVerified Oct 2026Gilbert Town Code 10-34-2, IPC 608.17.1.1 as amendedDoes a restaurant soda machine need a backflow assembly in Gilbert?Yes. Gilbert amends IPC 608.17.1.1 so the water supply connection to each carbonated beverage dispenser is protected by a reduced pressure principle (RP) backflow assembly. The part of the device after its second check valve, and the piping after that, must not be affected by carbon dioxide gas. The Town inspects backflow before a certificate of occupancy.
- City CodeVerified Sep 2026Gilbert Town Code 10-92(a)-(c)Gilbert Town Code 10-92(c): which backflow assembly does your kind of property need?Gilbert Town Code 10-92 requires an approved backflow assembly on each water service line, except single-family homes, before a certificate of occupancy issues. Subsection (c) lists 40 facility types: mostly reduced pressure (RP) assemblies, with double checks for tall buildings, laundries, food processing and medical and dental buildings.
- City CodeVerified Oct 2026Gilbert Town Code 10-91 and 10-95, with 10-116 and 10-118How often must a Gilbert business test its backflow assembly, and who can test it?In Gilbert, an assembly is tested when installed and at least once a year after that, and again after any relocation or repair, at the owner's expense. A defective assembly must be repaired or replaced within 45 days or as the officer specifies. Only Town-approved testers may test, and ignored violations can bring fines and a water shutoff.
Commercial Plumbing
Commercial Plumbing in every city- City ProgramVerified Oct 2026Gilbert Town Code 66-177Does every Gilbert business have to file a wastewater discharge questionnaire?Yes. Under Gilbert Town Code 66-177, every nonresidential user connected to the town sewer, including home occupations and users exempt from a business license, completes a wastewater discharge questionnaire. It is filed with the business license application and repeated yearly with the renewal. License-exempt users file when they connect and every July 1.
- PermitVerified Oct 2026Gilbert Town Code 66-232 and 66-233, with 66-187Does your Gilbert business need a Class A or Class B wastewater discharge permit?In Gilbert, an industrial user the town designates as significant needs a Class A wastewater discharge permit, and must apply at least 90 days before any new or additional industrial discharge begins. Smaller users can be required to hold a Class B permit if the director finds their discharge could harm the sewer system. Permits run up to five years.
- City CodeVerified Sep 2026Gilbert Town Code 66-244(a)-(c)Gilbert Town Code 66-244: grease removal devices for restaurants and food serviceGilbert Town Code 66-244 requires every newly built, remodeled or converted commercial kitchen with grease-generating activity to install a grease removal device at least as large as the adopted plumbing code (the 2018 IPC) requires. The town can also order a new or more effective grease removal device after grease blockages in the sewer line serving the business.
- City CodeVerified Sep 2026Gilbert Town Code 66-245 and 66-171Gilbert Town Code 66-245: floor drains and wash racks at auto shops and car washesIn Gilbert, a vehicle or equipment service facility may have no floor drains unless they connect to a wastewater pretreatment system. Parts-cleaning sinks and tanks cannot connect to the sewer, and wash rack water must pass through a pretreatment device first. The town's list covers repair, fueling, fluid changes, body work and washing.
- City CodeVerified Sep 2026Gilbert Town Code 66-244(d)-(e) and 66-243(d)How often must a Gilbert restaurant pump its grease trap? Town Code 66-244(d) and (e)Gilbert requires the entire contents of a grease removal device to be pumped out at least every six months, and more often when needed to keep grease out of the sewer. The director can accept a longer interval if the owner shows it works. Emulsifiers are banned, and additives can never be the only maintenance.
- Permit FeeVerified Oct 2026Gilbert Town Code 10-342When do Gilbert businesses pay water, sewer and system development fees?Gilbert collects system development fees before it issues a building permit. With no building permit, they are due when the water service connection is bought, or before a sewer-only connection is approved. Nothing issues until they are paid, and a change of use or added floor area is charged on the added service units only.
- City CodeVerified Oct 2026Gilbert Town Code 66-234When does a Gilbert business have to pretreat its wastewater? Town Code 66-234Gilbert requires pretreatment when the director finds a permit applicant's waste must be lowered before it reaches the town sewer, when a business produces wastewater the article prohibits, or when a plant change raises the strength or volume of a permit holder's discharge. The plans go to the director for approval before construction starts.
Also in the library: Uniform Plumbing Code · Arizona · Valley-Wide · Maricopa County (unincorporated) · Phoenix · Scottsdale · Paradise Valley · Mesa · Chandler · Tempe · Glendale · Surprise · Avondale · Tolleson · Litchfield Park
Need It Done To Gilbert Code?
Call a licensed plumber who pulls the permit and passes inspection the first time.