In Tempe, a water heater that has lost heat or is leaking from a valve can usually be fixed by replacing the part responsible, and sediment problems often clear with a flush. A tank leaking through its own wall cannot be repaired. Call the number on this page to be connected with a local plumber in Tempe.

How hard is Tempe water on a heater?
It varies more than most people expect. Tempe's water quality report lists an average hardness of about 10.9 grains per gallon, but the range runs from about 9.5 up to 29 grains per gallon depending on where and when it was sampled. At the high end, minerals settle in the tank quickly and coat electric elements. The city disinfects with chlorine, not chloramine. If your heater rumbles, runs out of hot water early or burns through elements, scale is a prime suspect.
Is my older Tempe house a problem for the heater?
Tempe is an older inner-ring suburb, and census-based figures put the median home at about 1983. Most of those houses have been through several heaters, but older homes can still hold dated pieces around the tank: stiff gate valves, galvanized nipples that rust at the top of the tank, flex connectors past their life, and vent pipes that were never updated. A plumber fixing a thermostat or gas valve may point these out. They aren't emergencies on their own, but it makes sense to deal with them while the water is already shut off and the tank is drained, rather than paying for a second trip later.
What does the city require for the work?
Tempe's homeowner permit guide says separate plumbing and mechanical permits are required when applicable, and that leak repairs are exempt only when they don't involve replacing or rearranging valves, pipes or fixtures. In practice, swapping a thermostat inside the heater is simple, but re-piping connections, moving the heater or replacing it should be checked with the Permit Counter at City Hall before the work starts. Southwest Gas is the gas utility listed by the city. If you smell gas, go outside first, then call 911 and Southwest Gas at 877-860-6020.
A local note
Tempe Water Utilities keeps a customer support line for water emergencies at 480-350-2837. Use it for a break on the city side; for a leaking heater inside the house, shut the cold valve above the tank, turn off the breaker or gas control, and call a plumber. When you do, mention the tank's age and whether it sits in a garage, closet or attic, since that shapes how the visit goes.
Water Heater Repair questions in Tempe
How hard is the water here, and what does it do to a water heater?
Do I need a permit for water heater work here?
Why does my hot water smell like rotten eggs?
Can a plumber repair a tankless water heater?
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