Phoenix leak detection and repair

Any page that gives you one answer about leaks in Phoenix is guessing. The city runs from 1940s bungalows in the historic districts to subdivisions finished in the last few years, and the pipe under those two houses has nothing in common. The median build year of 1984 is an average of extremes rather than a description of anything.

So the practical approach is to work at village level, which is how the city itself is organised and how we think about it. Where you are decides what is probably under the slab, whether flood irrigation is part of the picture, and whether the leak is likely to be slow and old or small and new.

Phoenix is not one housing market and the Census figures make that obvious. Across more than six hundred thousand housing units the median year of construction is 1984, but more than two in five homes predate 1980 and a quarter have gone up since 2000 — and only about three in five units are single-family.

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023). Geography: Census place.

Three Phoenixes, three kinds of leak

In the older central and west-side neighbourhoods, expect galvanized steel on the oldest end and early copper after it. Steel of that age rusts inward from the bore, losing pressure and then integrity without ever putting water where it can be seen; early copper perforates at pinholes rather than parting at a joint. Both leak slowly, for a long time, and the evidence arrives late and in the wrong place.

In the 1970s and 1980s ring, copper under the slab is the norm, and copper of that era usually fails where it was bent or where it rubs a rebar chair — so the leak is rarely where the wet carpet is. On the newer edges, north and south, PEX and newer copper mean a fittings-and-manifolds problem instead of a corrosion one.

Related: slab leak detection, water leak detection and whole-home repiping.

What Phoenix publishes, and where your responsibility starts

City of Phoenix Water Services publishes a leak-reporting channel and points homeowners to the Smart Home Water Guide for finding household leaks; Phoenix is one of the ten Valley cities behind that guide. It also states the boundary plainly: the city’s responsibility runs from the street to the meter, and everything on the house side of the meter is the property owner’s.

The department also notes that, on average, most of the water used at a home is used outdoors. That one line explains why an outdoor leak is the easiest kind to miss and the most expensive kind to ignore: there is no ceiling under a yard and no damp wall to warn you.

Related: high water bill investigation and irrigation and drip system leaks.

Pools, and one genuinely useful Phoenix date

Every swimming pool, spa and hot tub in Phoenix holding water two feet or more deep must be enclosed by a non-climbable exterior fence or wall at least five feet high with self-closing, self-latching gates, and a 1990 law added an interior barrier requirement from which single-family homes with pools predating May 1990 are exempt.

That May 1990 cutoff is a real, citable date, and it is a far better guide to whether a pool is of the older or newer generation than guesswork about construction materials. Either way, the first test is the same: bucket on a pool step at the pool’s level with the auto-fill off, both levels marked, compared after a couple of days, then repeated with the equipment off.

Related: pool and spa leak detection and pool and spa leak repair.

Where in Phoenix we work

We cover the city village by village, and each of these has its own page with its own housing profile, because they genuinely are different jobs.

• Encanto and Willo — the oldest housing we work on
• Maryvale — the post-war planned suburb
• Arcadia and the Biltmore — flood-irrigated older lots
• Moon Valley — foothill lots where water travels
• Deer Valley and Desert Ridge — the newer north
• Laveen and Ahwatukee — the south side