A toilet that runs constantly is usually due to faulty flush valves, incorrect water level in the cistern, or worn gaskets. The problem occurs when the water does not shut off properly after flushing, leading to continuous water leakage from the cistern to the toilet bowl. The most common causes include problems with the float valve, a broken chain, or an incorrectly adjusted water level.
What causes the toilet to run constantly?
The most common causes of a running toilet are faulty flush valves and incorrect water levels in the cistern. The flush valve, also known as a flapper or rubber flap, seals the bottom of the cistern after flushing. When this valve becomes deformed, cracked, or covered with limescale and dirt deposits, it can no longer seal properly.
The float valve controls the water level in the cistern and shuts off the water supply when the correct level is reached. If the float is stuck, damaged, or incorrectly adjusted, water will continue to flow in. The chain connecting the flush handle to the flush valve can also cause problems if it is too long, too short, or has broken.
Worn gaskets around valves and connections can also lead to water leaks. Limescale deposits from hard water often exacerbate these problems by preventing valves from closing tightly.
How can you stop a toilet from running on its own?
Check the flush valve and float as a first step when the toilet is running constantly. Carefully lift the cistern lid and look at the flush valve at the bottom. Press it down against the seat to see if the running stops temporarily.
Adjust the float by bending it gently upward if the water level is too high, or downward if it is too low. The water should remain approximately 2-3 cm below the rim of the cistern. Check that the chain between the flush handle and the flush valve is the correct length – it should be taut but not stretched when the valve is closed.
Clean the flush valve of limescale and dirt using a soft brush. If the valve is deformed or cracked, it needs to be replaced. Also check that the float has not cracked and is filled with water, causing it to sink.
Contact a plumber if the problem persists after these simple steps, or if you discover a major leak around the base of the cistern.
What tools are needed to repair a running toilet?
For basic toilet repairs , you will need adjustable pliers, screwdrivers, and new replacement parts. Adjustable pliers are used to loosen and tighten connections, while both flat and Phillips screwdrivers are needed for various screws in the cistern.
Common spare parts include flush valves (50-150 SEK), float valves (100-300 SEK), chains (20-50 SEK), and gaskets (10-30 SEK each). A complete toilet cistern repair kit usually costs 200-400 SEK and contains the most commonly used parts.
Also have a bucket or towel handy to deal with any water that may leak out during the repair. A flashlight or the light on your cell phone will help you see clearly inside the cistern.
Invest in quality parts from well-known brands such as ASSA or Geberit for longer durability. Cheap spare parts may need to be replaced more often and cost more in the long run.
When should you contact a plumber for toilet problems?
Contact a plumber immediately if there is water leakage around the base of the toilet, if the water pressure is too low for normal flushing, or if several repair attempts have not solved the problem. These signs may indicate more serious plumbing problems that require professional assessment.
Emergency situations such as extensive water leaks, flooding, or complete blockages in the sewer system require immediate professional assistance. If the toilet moves when you sit on it, this may indicate problems with the mounting points or the floor, which is dangerous to try to repair yourself.
Professional help is also warranted if the problem recurs despite proper repairs, which may indicate hidden faults in water pipes or drainage systems. A plumber can identify the root cause and prevent future problems.
In terms of cost, it is often more economical to hire a plumber for complex problems rather than risking further damage through incorrect repair attempts.
How 24 Center helps with urgent toilet problems
24 Center offers professional plumbing services around the clock for all types of toilet problems, from running toilets to emergency water leaks and sewer blockages. Our qualified plumbers have expert knowledge in all common toilet repairs and can quickly identify the root cause of the problem.
Our services include:
- 24/7 emergency service for water leaks and flooding
- Repair and replacement of flush valves, float valves, and gaskets
- Installation of new toilets at a fixed price starting at SEK 3,490 (SEK 1,490 with ROT tax deduction)
- Local technicians with fast response times throughout Sweden
- Long-term solutions that prevent recurring problems
Call 08 40 24 240 for immediate assistance with urgent toilet problems, or book online for planned repairs and installations. We will come to you quickly with the right tools and spare parts to solve the problem efficiently.
Frequently asked questions
How long do new flush valves and float valves last?
Quality float valves from well-known brands usually last 5-8 years with normal use, while float valves can last 8-12 years. The service life is affected by water quality, frequency of use, and whether you have hard water with a lot of lime. Regular cleaning can significantly extend the service life.
Can I use the restroom while I wait for the repair?
Yes, you can continue to use the toilet even if it is constantly running, but this wastes a lot of water and increases your water bill. As a temporary solution, you can turn off the water supply after each flush by turning the valve behind the toilet, but this is impractical in the long term.
How much does it cost to have a plumber repair a leaking toilet?
A basic repair of a running toilet usually costs SEK 800-1500, including labor and standard spare parts. More complex problems that require the replacement of several components or cisterns can cost SEK 2000-4000. With the ROT tax deduction, you get a 50% tax reduction on the labor cost.
How much water does a running toilet waste per day?
A constantly running toilet can waste 150-400 liters of water per day, depending on how severe the leak is. This corresponds to an additional cost of $5-15 per month on your water bill. A minor leak still wastes 20-50 liters per day, so even small problems should be fixed quickly.
Are there any preventive measures to avoid running toilets?
Yes, clean the flush valve of limescale and dirt every 3-6 months using a soft brush and mild detergent. Check that the chain is the correct length and that the float moves freely. Avoid pouring chemicals or foreign objects into the toilet, and consider installing a water filter if you have very hard water.
What should I do if the problem recurs after repair?
If the problem recurs within a few weeks after repair, it may indicate hidden faults in the water pipes, incorrect installation of new parts, or that the root cause has not been addressed. First, check that all parts are correctly installed, but contact a plumber if the problem persists, as there may be structural issues that require professional investigation.