One of the most common questions we get from homeowners is: “Is this a plumbing issue or a sewer issue?” It’s a fair question — and the answer determines who you need to call.
Here’s a simple way to think about it.
If the Problem Is at One Fixture — It’s Probably Plumbing
A slow drain in just the kitchen sink, a leak under one bathroom vanity, or a single toilet that keeps running — these are almost always plumbing issues. One fixture acting up points to a localized problem, and a licensed plumber is the right call.
Big John’s Plumbing and Drain handles these repairs every day across the Seattle area. We show up fast, diagnose the problem clearly, and fix it without unnecessary upselling.
If the Problem Is Throughout the House — It Might Be the Sewer
When multiple drains are slow at the same time, when sewage is backing up into your tub when you flush the toilet, or when you’re getting gurgling sounds from several drains at once — that points to a main sewer line issue. That’s a different kind of specialist.
For sewer line problems in Seattle, we’d point you toward Pipelining Northwest. They’re sewer and drain specialists who handle everything from camera inspections and drain cleaning to full trenchless sewer replacement. They serve King, Pierce, and Snohomish counties with 24/7 emergency availability.
If You Can’t Find the Source — You Might Need Leak Detection
If your water bill has spiked, you hear water running when nothing is on, or you have unexplained wet spots — but you can’t actually find the leak — that’s a job for a leak detection specialist. Leak Detection Northwest uses non-invasive technology to find hidden leaks in walls, under slabs, and underground without unnecessary damage. They can tell you exactly where the problem is before any repair begins.
Still Not Sure? Call Us.
We’d rather point you in the right direction than have you waste time and money on the wrong service. Give Big John’s a call and describe what you’re seeing — we’ll help you figure out the best next step.
