Plumber in Gilbert, AZ: water, codes and how to hire

Gilbert is one of the youngest large towns in the Valley. Census Bureau survey data for 2024 put the median year a Gilbert housing unit was built at 2004; about 62 percent of homes were built in 2000 or later, about 30 percent in 2010 or later, and only about 4 percent before 1980 (ACS table B25034 via Census Reporter).

In practice that means few homes with original galvanized steel pipe, and many with PEX or copper supply lines, plastic drains and slab foundations. It also means a large wave of water heaters, softeners, pressure regulators and garbage disposals installed in the 2000s are now at the age where they start to fail. A home built in 2005 may still have its first water heater; ask any plumber you talk to how old the unit is before approving a repair.

The town's water services page says surface water is Gilbert's primary source, drawn from the Salt River Project (snow and rain runoff from Arizona watersheds) and the Central Arizona Project (Colorado River water), with groundwater pumped from wells. The North Water Treatment Plant takes CAP water. The page also covers the Santan Vista Water Treatment Plant. The town page says Gilbert has grown to more than 205,000 residents.

Because the water is a blend of river and well water, hardness and taste can shift with the source. Gilbert does not publish a hardness figure on the pages we could verify, so ask the town for a current number before setting a softener, or test a sample yourself. Our hard water guide lists the published numbers for neighboring cities.

Gilbert publishes an annual drinking water quality report with the test results for the town's water system. Read the current report before you buy treatment equipment, because results can differ by area and by year, and ask the town's water department about anything specific to your address.

For a homeowner, the plumbing takeaway is simple: if you are thinking about an under-sink or whole-house filter, read the current report for your area first and look for a system certified to reduce the specific contaminants you care about. A filter or softener is a plumbing installation, so the same license checks apply.

The town's Plan Review and Inspection page lists the codes it enforces, including the 2018 International Plumbing Code and the 2018 International Residential Code, effective January 1, 2020. For single-family homes, ask the town's Development Services staff whether your job needs a permit before work starts; a repipe, a new gas line or a change from a tank to a tankless water heater usually involves more than a simple swap.

1. Search the company on the Arizona Registrar of Contractors site and confirm the license is active.
2. Confirm the classification fits residential plumbing. The ROC classification list includes R-37 (plumbing, including solar), R-37R (plumbing) and the dual licenses CR-37 and CR-77.
3. Be careful with handyman offers. Under A.R.S. 32-1121, an unlicensed person may only take casual or minor jobs totaling less than $1,000 that do not need a building permit, and must include the words "not a licensed contractor" in advertising.
4. Get a written estimate and contract, and check that the license number on it matches the ROC record.

Our hiring guide covers contracts, deposits and complaints in more detail, and the cost guide shows typical price ranges.

This site is an independent guide that explains costs, warning signs and how to hire. It is not a licensed contractor; we do not perform plumbing work and do not answer phones. To reach a plumber, call one of the licensed contractors listed on this page or see all listed contractors. Questions about this guide: email us. We do not take service requests. Run the license checks above on anyone you hire. If water is actively leaking, shut off the main valve first and read our emergency plumbing guide.