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Frozen drain or sewer line in Libby: what to do

By Chris Desorcy, owner of Kootenai Drains · Published October 30, 2026 · Last updated October 30, 2026

If every drain in the house is slow after a cold snap, your sewer or septic line may be frozen. Stop running water so it doesn't back up into the house. Then call me.

Need it cleared? That's what my sewer and septic line cleaning in Libby and Troy is for.

Signs your line is frozen

• It happened right after a hard cold snap
• Every drain in the house is slow, not just one
• Toilets gurgle or won't go down
• The line runs shallow, or under a driveway where snow got packed down

What to do

• Stop using water so nothing backs up into the house
• Keep cars and plows off the area over the line
• Call me with what you're seeing. I'll tell you if it sounds frozen or clogged

What not to do

Don't pour antifreeze or salt down the drain. If you're on septic, that stuff ends up in your tank. Don't put a torch to plastic pipe either.

Keep it from freezing next winter

Snow is good insulation, so don't plow or pack it down over your line or septic area. Use water every day, even a little. A house that sits empty is the one that freezes. The University of Minnesota septic program has a good cold-weather guide.

What a frozen line call looks like

It's usually the morning after a few nights well below zero. The toilet won't go down, the shower drain is backing up, and nothing helps. Most times the line runs shallow under a driveway or a path where the snow got packed down hard.

I find where the line is frozen, then I thaw it out from the inside. No digging. Once it's flowing, I run the camera through so you know it's clear and nothing cracked. Then I'll tell you what to do so it doesn't happen again next winter.

Want to hear it from people I've helped? Read my Google reviews.

Common questions

Read next

• Cabin and hunting camp drains: getting through a Montana winter
• Septic backing up? Is it the line, the tank, or the drainfield?