Common causes of a noisy toilet

Date published: 7th October 2013

If your toilet is making some dubious noises you’ll be wondering what on earth is wrong with it. Identifying the problem is the first step to regaining peace and tranquillity in your bathroom. You may need a plumber but it may be something you can fix yourself. So what’s causing the noise? Before you call your plumber, read up on common things that can go wrong.

A dirty valve (also known as a ballcock)

Probably the most common cause of a noisy toilet is the valve being dirty. You’ll know if this is your problem as the toilet will be making a loud foghorn-type noise. But don’t worry, this is relatively easy to fix. After turning your water supply off, locate the valve and carefully remove any dirt and debris. Switch the water back on (checking for any leaks) and the noise should be gone. If this doesn’t work then fitting a new ballcock and fill valve might help.

Bad vibrations

If the foghorn noise isn’t fixed by cleaning out the valve then it could possibly be a loose connection somewhere in the cistern.  To check, firstly turn the water off and unscrew the assembly of all the parts including the valve. Take the washer out and put it back in the other way round. Screw everything back together tightly and replace it in the cistern. Turn the water back on and give it a test flush to see if that has fixed the problem.

The water hammer

If (and please pardon the expression!) your toilet is humming, then it may be as easy as replacing a washer. If you split the ball valve in two you’ll see a washer there. If it’s looking like it has seen better days simply replace it (making sure the water supply is turned off first) and replace the ball valve. That should sort the problem.

The float switch

If you are getting water overflowing from the cistern then your float switch may need some attention. It could just be a case of unscrewing and reassembling the float in order to regulate it, or you may need to put a new one in. Either way this is easily fixed without calling a plumber in.

Gurgling drains

If you can still hear gurgling long after flushing the toilet then it might be a problem with the vent. By unclogging it you will stop pressure building up in the system.

Trusty plumber

If you’ve tried all of the above (or don’t have time to do so) with no joy, it’s probably time to get on the phone to your local plumber. They can usually sort the problem quickly and effectively: years of experience with noisy toilets mean they’ll be able to find the problem pretty swiftly.

Share This

Boiler Repairs
Boiler Servicing
Gas Safety Certificates
Central Heating Repairs & Servicing
Emergency Plumbing Repairs
Boiler Replacement
Solar Thermal Repair and Maintenance
Google Reviews

Rated 5/5 based on 75 reviews. Write a review. Read all 75 reviews.

Quote mark

"Thanks for great service at an affordable price. Jaime was very efficient. It's great to find a tradesman that can be relied upon."

Adrian Collins

Quote mark

"Jamie recently serviced our boiler after searching for someone who was knowledgeable, professional and reliable. He set up all of our system to work optimally and advised against wasting money upgrading the system as competitors has suggested saving £0000's so a big thank you. Would highly recommend."

Chris Bloye

Quote mark

"I got in touch with Jamie when I moved to my flat in Plymouth. He has provide a fast, high quality service every year so far as well as offering helpful advice. I can't recommend him enough."

Ed White

Quote mark

"We had no hot water and had tried everything. Jaime was easy to contact, he provided an estimate before we agreed to the job. He arrived when he said he would and diagnosed and fixed the problem with our boiler quickly, efficiently and left no mess. Would definitely use his services again."

Heidi Metcalfe

Quote mark

"I’ve used Jaime for the 2nd year running to service my boiler and also to fix a leaky pipe. Friendly and reliable service, offered advice where needed and very reasonably priced. Would highly recommend."

Michelle Grieves

Quote mark

"Used Jamie for about three years for my home and two tenanted properties and he has always been fantastic. Had a full boiler replacement and a small repair and I've been very happy with the work. The annual inspection reminders are great and I've always found him friendly and helpful."

Katherine Healey

Quote mark

"Called them when I needed a job done ASAP as had other trademan lined up and had forgot. Very helpful and was able to fit me in at short notice. Turned up when he said he would, was very efficient and professional. Will definitely use him again."

Dean Bennett

Quote mark

"Jamie is always great, we've had him fit a boiler, do gas safety checks in rental properties and service our own boiler. Always prompt, always professional and a great service. Happy to keep using."

Mark Smith

Quote mark

"Been using Jamie for the last 3/4 years for landlords gas safety certificates and emergency callouts. Been very helpful and quick to respond. Happy to recommend - 5 stars."

Martin Woodage

Gas Safe Register Water Industry Approved Plumber Trustmark Worcester Bosch Accredited Installer


Unit 122, 91 Mayflower Street
Plymouth, Devon, PL1 1SB