Apartment Shower Draining Slowly, Backing Up or Leaking

Three different complaints arrive as "the shower's broken." A tenant stands in an inch of water because the drain won't keep up. A tenant says water comes up through the shower drain when they flush the toilet. Or a tenant sees a stain on the ceiling below and traces it to the shower above. Each needs a different fix, and the first question for a property manager is which one it is.

A shower that drains slowly on its own is nearly always hair and soap scum in its trap and the pipe just past it. A shower that backs up when another fixture runs is a sign that the shared line is restricted. A shower that leaks is a failed drain seal, a worn valve or a cracked connection behind the wall.

We ask what else is slow or gurgling. A single shower points to that shower's drain. Several fixtures in the same unit, or neighbors with the same complaint, point to the line they share.

We then cable the drain and see what comes back. If the shower clears, we run water to confirm it drains freely. When the cable passes and the shower still backs up, we put a camera in the line to follow it toward the stack.

For leaks, we run the shower and look for where the water appears, check the drain connection from below if there's access, and test the valve. We isolate the shower's supply to see whether the leak stops, which separates a supply-side leak from a drain-side one.

A clogged shower drain is cabled and cleared. A leaking valve cartridge or trim gets replaced. A failed drain connection gets resealed or replaced.

If the line behind the wall is leaking, or the shower pan or surround is damaged, that's a bigger repair, and we write it up as a proposal for the owner or property manager before work starts. If the camera finds a problem in the shared line, we stop the symptom first and propose the larger fix separately.

Tell us whether the water is reaching the unit below, because that changes how fast it needs attention. Give us the tenant contact and any access requirements such as a lockbox or gate code, and say who is authorizing the work. Repairs caused by tenant misuse and repairs to building plumbing are often billed differently, so settle that before we arrive if you can.

Hair catchers help a lot. They won't fix a leak, but they prevent most repeat slow drains.

You decide on the repair yourself. Slow drain alone is a cable job. Backing up with a flush, or a neighbor with the same complaint, means contact your HOA about the shared line.