Why are multiple drains clogged at the same time?

When several drains back up at once — especially the lowest ones in the house, like a basement floor drain or a first-floor toilet — the problem is usually in the main sewer line, not an individual fixture. A single clogged sink is local; multiple drains failing together points to the shared line everything empties into.

The common causes in our area are grease buildup, tree-root intrusion into the sewer line, or a structural issue like a crack or collapse. A camera inspection is the reliable way to see which one it is instead of guessing.

If sewage is backing up into the house, treat it as urgent — it's a health hazard as well as a mess. Wiz Plumbing runs 24/7 emergency sewer service; call (630) 448-8940.