Referral service, not a contractor. SF Drain & Sewer Pros does not perform plumbing, drain, or sewer work. We may be paid if you hire a provider through a partner link. Always confirm the provider's license and get a written estimate. How this works
How to unclog a toilet, and when to stop
You'll need
- A flange plunger (the kind with a fold-out rubber sleeve, not the flat cup type)
- Rubber gloves; old towels
- Optional: a closet auger, made for toilets, with a protected sleeve that won't scratch porcelain
Steps
- Stop the overflow. If the bowl is near the rim, don't flush again. Lift the tank lid and push the flapper closed, or close the supply valve behind the toilet.
- Plunge correctly. Seat the flange in the outlet, keep the cup under water, and use 10–15 firm push-pull strokes, keeping the seal. Then pull away sharply.
- Use a closet auger if plunging fails: feed the cable into the outlet, crank clockwise, and withdraw slowly.
- Test with a bucket of water before flushing normally.
Stop and call a pro if
- Other drains (tub, shower, floor drain) gurgle or back up when you plunge or flush. That suggests a main-line blockage, and more water makes it worse. See the sewer backup steps.
- Something hard (a toy, phone, or other object) went down. Pushing it further can lodge it in the line.
- The toilet clogs repeatedly.
Avoid chemical drain openers in toilets. They rarely work on these clogs and create a hazard for whoever works on the line next.