Apartment Stack and Main Line Leaks in Phoenix

The owner does. A drain stack, a water riser and an underground main all serve more than one unit, and Arizona's landlord statute makes the owner responsible for plumbing the owner supplies. A.R.S. 33-1324 requires the landlord to maintain plumbing in good and safe working order and to supply running water and reasonable hot water at all times.

The clock matters. If the failure materially affects health and safety, such as a sewage leak or no water, a resident can give written notice under A.R.S. 33-1361 that the lease ends in five days if it is not fixed. A building-level leak that stays open is how one problem turns into a vacancy problem. For unit-level work, see apartment unit leak response.

A leaking drain stack shows up as a damp wall, a stain growing on a ceiling below or an odor, not a puddle. Stacks run in the walls between units, and a failed joint, cracked cast iron fitting or a corroded section drips only when the units above run water. Stains that appear after showers or laundry, in the same spot, point to a drain. Stains that stay steady point to supply.

Our water leak from the ceiling FAQ explains how to tell the two apart. For old cast iron, read how long cast iron drain pipe lasts. A camera in the stack and the building drain tells you whether it is one bad joint or a pipe at the end of its life.

A steady meter reading with every fixture off means a leak between the meter and the units. The water meter leak test takes ten minutes, and what it means when the meter still moves with the main valve off points to underground pipe. Warm spots on a slab floor, hissing, a sudden drop in pressure and unexplained wet landscaping are the usual signs; signs of a slab leak in Arizona lists them.

Phoenix's plumbing code expects full-open valves at the base of every water riser in most multifamily buildings, so a riser leak should be isolatable without shutting the whole property. Many older properties have no usable valve, which turns a leak repair into a building shutdown. Finding and exercising those valves before the leak is the cheapest maintenance you can do. Pressure matters too. The code requires a pressure-reducing valve where building pressure exceeds 80 psi, and a failed one will find every weak joint in a 40-year-old line.

We locate leaks with listening and tracing equipment, and our leak detection service explains what to expect. If the line has to be opened, slab leak repair choices compares rerouting and breaking the slab.

A building sewer that fails under a parking lot or the street is the owner's repair in Phoenix. Phoenix City Code 28-5.1 has the city repair a verified break in the right-of-way only for single-family and duplex properties. An apartment owner repairs the whole line to the public main, including the part under the street, and needs a city permit to do it. See who is responsible for the sewer line in Phoenix.

Stoppages come first. When several ground-floor units back up at once, the stoppage is in the main, not a unit drain, and our sewer backup in a multi-tenant building FAQ lists what to do first. A cable clears the blockage and a camera shows why it formed. Phoenix requires cleanouts every 100 feet and one at the building drain junction, which is also where we set up the jetter. A property without cleanouts means a longer, more expensive visit, which is why hydro jetting without an accessible cleanout is worth reading.

Not every leak is a repair. A pinhole in a short exposed section can be a spot repair, and a tuberculated stack that still flows may only need descaling, not replacement. Our cast iron descaling FAQ covers when that works. The honest answer, after a camera and a pressure check, is sometimes "this section, not the whole building."

Replacement is the right answer when the pipe is breaking in more than one place, the camera shows collapse or the same line has leaked repeatedly. We will tell you which one you have before work starts.

We clear stacks and mains, jet cast iron and clay, run cameras, find and repair leaks, excavate and replace damaged underground sections and set up shutoffs so the next leak is a one-riser problem. We offer 24/7 emergency service, free estimates and upfront pricing before work starts. See sewer repair, hydro jetting, sewer camera inspection and our multifamily page.