Learning Center › Drain Problems

Why Does the Same Drain Keep Clogging?

Clearing the same drain again and again means the real cause is still down there. Here's what it usually is — and how to stop paying for it twice.

Everybody’s had a clog. But a drain that clogs over and over is a different animal — it means the thing causing it is still down there, and clearing it again is treating the symptom.

What’s usually going on

The buildup was never removed. A quick clearing bores a hole through the blockage, but the grease, soap, and gunk coating the pipe wall stays. The line narrows right back down. Hydro jetting removes the coating instead of just the plug.

There’s a low spot (belly). If a section of pipe has sagged, water and solids pool there and rebuild a clog in the exact same place every time. No amount of cabling fixes a belly — you have to know it’s there, which takes a camera.

Roots. In older lines, roots reestablish and keep snagging debris.

It’s actually the main line. If several fixtures are slow, the branch drain isn’t the problem — the main line is.

Breaking the cycle

The move isn’t a fourth cleaning — it’s finding the cause once. Tell us the history when you call: which drain, how often, how fast it returns. That usually points us straight at the reason, and we’ll recommend the fix that actually ends it rather than the one that just resets the clock.