ZIP code · Phoenix
Finding water leaks in 85018 (Phoenix)
What the Census says about the housing in 85018, and what it means for a hidden leak.
85018 covers part of Phoenix, where the typical home was built in 1971. It is the most useful thing to know about a property nobody has seen yet: build year picks the material, and here that means copper supply under the slab.
Among the ZIP codes we cover, 85018 sits in the older quarter, and age shows underground long before it shows anywhere else.
| What the housing in 85018 is | Figure |
|---|---|
| Median year housing was built | 1971 |
| Built before 1980 | 67 percent |
| Build era | 1970s and early 1980s |
| Built since 2000 | 18 percent |
| Likely supply material | copper supply under the slab |
| Largest decade of building | 1950s (28 percent) |
| What tends to fail first | Copper of this era usually fails where it was bent or where it rubs a rebar chair, so the leak is rarely where the wet carpet is. |
| Owner-occupied households | 55 percent |
| What we listen for | A hiss that rises and falls as the line is pressurised and bled, which is how a failure in the pipe is told apart from something running somewhere in the house |
| Single-family detached homes | 52 percent |
| Land area | about 15 square miles |
Housing figures: U.S. Census Bureau, American Community Survey 5-year estimates (2023), for ZIP Code Tabulation Area 85018. Town coverage: U.S. Census Bureau, 2020 ZCTA-to-Place relationship file.
The damp is in one room. Why look somewhere else in 85018?
Because on 1971 pipe the leak runs a long time before anything shows. Where it surfaces is the end of the journey, not the start.
With 67 percent of 85018 predating 1980, that is most of the housing. On that housing the damp carpet is where the water arrived.
So in 85018 symptoms are directions, not destinations. Sound narrows it to a point once the loss is proved. See acoustic leak detection.
Is the housing in 85018 all the same age?
Several. Four separate decades each account for a tenth or more of 85018. It is unusual, and it changes the first question.
Mixed-vintage ground is the awkward kind. Where a house was part repiped, the joint between materials is the weak point.
So nothing about the house next door carries over to yours in 85018. We test more here and guess less.
Is 85018 one of the older parts of the Phoenix area?
Older than almost anywhere else on this site. At 1971, 85018 has older housing than nearly all of our coverage.
Age is not a criticism here, it is a specification. In 1971 housing, much of the deterioration is behind us rather than ahead.
A slow change with nothing visible is worth a look here. See water leak repair and whole-home repiping.
The damp is in my unit. Is it my pipe, in 85018?
It becomes a question about which line, before it is a question about where. Detached houses are only about 52 percent of 85018.
A shared slab carries water sideways without regard to the deeds. It surfaces at the easiest point, which may be two doors along. Finding it and owning it are different things here.
We prove which line is losing water before anyone in 85018 is blamed. It also stops the wrong floor being opened. See HOA and community leak detection.
The Arcadia area page is built on this same ZIP code’s Census figures, and goes wider than the housing data.
Straight answers
Questions we get about 85018
When was most of 85018 built?
The median home in 85018 was finished in 1971, according to the U.S. Census Bureau. The source is the American Community Survey, five-year estimates for 2023. It places most of the housing in the 1970s and early 1980s, which is what decides the supply material.
What are the water pipes in 85018 likely to be made of?
Most likely copper supply under the slab, going by a median build year of 1971 in 85018. No page can tell you what is under your own slab. A repipe, an addition or an old repair can put something else in the wall. So the line is isolated and tested under pressure before anything is opened.
Homes in 85018 share walls. How do you tell whose leak it is?
By proving which line is losing water, before anyone is blamed. About 48 percent of 85018 is attached or multi-unit. Water moves under the concrete and surfaces where it can, not where it started.
Do you need to know which water utility serves 85018 before you come out?
No — it makes no difference to the work. A ZIP code boundary and a water service boundary are not the same shape, so we will not guess at yours. Your own meter is the useful document, not a boundary map.
Where a call from 85018 normally goes next
Not sure whether it is the house or the pool in 85018?
A photo of the wet patch, the pool equipment or the meter face is enough to start. Say how long it has been happening, and whether anything in the house changed.
5.0 on Google
What customers in the Phoenix valley have written. The words are theirs, on listings we cannot edit.
“Humberto has been amazing! Prompt, professional, and patient. He has gone above and beyond, taking the time to show me how to operate the water valves and educating me so I can continue to monitor for future leaks. He identified multiple leaks and made thoughtful recommendations.”
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“The owner and operator of this company is everything a contractor should be. On time, honest, competent, reachable, comprehensive. Hope to work with him again in the future.”