When a plunger does not clear a toilet, stop flushing, close the shutoff valve behind the bowl, and check whether any other drain in the house is slow or gurgling. A stubborn clog in only that toilet can often be cleared with a closet auger. A clog that also affects the tub, sinks or a second toilet is in the main drain, and an auger will not fix that.
This page walks through what to do in order, what to avoid, how an auger works and the point where the job belongs to a plumber. It starts with the steps because a toilet that is rising toward the rim needs action before it needs explanation.
First, stop the water
If the bowl is rising, do not flush again. Reach behind the toilet and turn the small oval or round handle on the water supply clockwise until it stops. Lift the lid of the tank and push the flapper down by hand if the bowl is still filling.
With the water off, you have time to think. A toilet that overflows does so because more water kept arriving, and stopping it buys you the chance to try again calmly.
Put old towels on the floor and keep children and pets out of the bathroom. Water from a toilet bowl is dirty, so wear rubber gloves for everything that follows.
Why the plunger might not be working
A plunger is a pressure tool. It only works if it seals and if the clog is close to the bowl. There are common reasons it fails.
- The plunger is the flat sink type, which does not seal in a toilet, and you need the flange type with the fold-out rubber collar.
- The bowl had too little water, so there was nothing for the plunger to push.
- The clog is hard, such as a toy, a wad of wipes or a heap of paper, and pressure only packs it tighter.
- The blockage sits farther down in the drain, past the reach of plunger pressure.
- The toilet's own trap is cracked or the wax ring is leaking, which lets pressure escape.
Another reason is that the plunger is being pumped too hard. Short, hard thrusts splash and break the seal. Slow, steady pushes with a firm pull back work better.
The right way to plunge
Do it once properly before moving on. A half-hearted try tells you nothing.
- Make sure the bowl has enough water to cover the plunger head. Add a little from a bucket if not, but never to the rim.
- Seat the flange plunger so the rubber covers the drain hole fully, with the collar inside the opening.
- Push down gently first to push out trapped air, then pump steadily for about fifteen to twenty seconds.
- On the last pull, snap the plunger back sharply to draw the clog loose.
- Watch for the water to drain. If it goes down, flush once gently and see whether it clears.
If the water level hardly moves after a couple of proper attempts, stop. More plunging will not help, and it can splash dirty water onto the floor.
Using a closet auger
A closet auger, also called a toilet auger, has a curved tip and a short cable. It is designed to pass through the toilet's trap without scratching the porcelain, which a regular drain snake can do.
Feed the tip into the drain hole and turn the handle slowly while pushing forward. When you feel resistance, keep cranking gently to hook or break up the clog, then pull the cable out and wipe it. Flush gently to test.
Never force the cable if it suddenly stops hard. A firm stop that does not give often means the blockage is deep in the line, or the cable has found a solid object. Pulling the cable back out and calling a plumber is better than breaking the trap.
| Situation | Likely cause | Best next step |
|---|---|---|
| Only this toilet is slow | Clog in the trap or just past it | Closet auger |
| Toilet and tub both gurgle | Main drain partly blocked | Stop using water, call a plumber |
| Plunger worked once, clog came back | Material caught farther down | Plumber checks with a camera |
| Water rises when sinks drain | Main line blockage | Stop all water, call a plumber |
| Bowl empties but flush is weak | Partial clog or rim jets clogged | Plumber looks at the fixture |
When to stop and not try again
Some clogs are a signal that the problem is bigger than the toilet. Stop DIY and call if you see any of these.
- Water rises in the tub or shower when you flush, or the toilet gurgles when a washing machine drains.
- More than one toilet will not flush.
- Sewage smell is strong or sewage is coming up from a floor drain.
- The toilet rocks, leaks at the base or has a cracked bowl.
- You dropped something solid into the bowl.
Do not pour a strong drain chemical into a toilet. It can sit in a blocked bowl, splash on skin when you plunge, and damage the finish. A plumber who comes later must also deal with whatever chemical is in the water.
Safe steps while the toilet is blocked
Close the shutoff behind the toilet and stop flushing. Keep water running only at fixtures that drain freely, and avoid the washing machine and dishwasher until you know where the blockage sits. If wastewater is rising anywhere in the house, stop using every drain and keep children away from it.
What a plumber looks at
A plumber starts by working out whether the blockage is in the toilet, in the branch line or in the main. Plumbers often use a larger auger, and when the cause is not obvious, a drain camera shows what is down there.
If the problem is a fixture that keeps clogging because of low flush power, an old model or a bad fit, the answer may be a repair or replacement of the toilet. Our toilet repair page covers wax rings, leaks at the base and fixture swaps. If the main drain is the real problem, our drain cleaning page explains what clearing the line involves.
Preventing repeat clogs
Most clogs come from what goes down the drain. Flushable wipes, paper towels, feminine products and excess toilet paper are the usual causes. A short rule is that only human waste and toilet paper belong in the bowl.
Fewer clogs happen when a toilet flushes strongly. A weak flush may mean the water level in the tank is low, the rim holes are scaled up, or the bowl is an older low-flow design that struggles. A plumber can sort out which.
If a toilet clogs repeatedly with nothing unusual going down, the cause is not your technique. Ask a plumber to check the fixture and the line behind it rather than plunging weekly.
A Kuna note on sewer lines
The City of Kuna Wastewater Division runs the sewer mains and lift stations in town. The city also lists a sewer emergency line at (208) 573-1511. If every drain in your house backs up at once, the blockage may be in the main rather than in your toilet, so a plumber's first job is to tell you which side of the property line the problem is on.
That matters because the fix and the phone call are different depending on where the blockage sits. Do not spend an hour on the plunger if the whole house is affected.
For water emergencies, the City of Kuna Water Department has staff on call around the clock at (208) 573-7676. That number is for water supply emergencies such as a broken line, not for a clogged toilet.
Source: City of Kuna Water Irrigation page
Toilet will not clear?
Call (208) 679-8357 any hour and tell us whether it is one toilet or several drains. We will say what to do next.
Serving Kuna and the towns next door
We take calls from Kuna and the surrounding communities, including customers who reach us from Nampa. If you are not sure whether your address is covered, our service area page lists the towns we serve. Where a toilet connects to the drain is set by the 2017 Idaho State Plumbing Code, based on the 2015 UPC, which is one reason repeated clogs deserve a camera look.
Frequently asked questions
The plunger may be the wrong type, the clog may be too far down or too hard, or the blockage may be in the main line. Try one proper plunge, then use a closet auger or stop and call.
It is not a good idea. Chemicals can sit in a blocked bowl, splash when you plunge and damage the porcelain finish. A plumber will have to work around it as well.
Check other drains. If the tub gurgles when you flush, or two toilets are affected, the blockage is likely in the main. Stop using water and call a plumber.
A closet auger has a protective sleeve and is made for toilets, so a careful user usually does not scratch the bowl. A regular drain snake is more likely to scratch the porcelain.
The City of Kuna lists a sewer emergency line at (208) 573-1511. A plumber can also check your side of the line and tell you whether the city needs to be involved.
Flush gently once to confirm it drains. If it clogs again quickly, stop using it and have a plumber check the line.