If your toilet bowl not filling with water after flush, the problem is most probably located in the cistern.

Identifying The Issue

Checking For Flush Valve Blockages:

Step 1: You will need access to the cistern, so clear away any toiletries etc., from the area.

Step 2: Lay down some old towels around the toilet and beneath the cistern.

Step 3: Remove the cistern lid and place it safely where it won’t break.

Step 4: Look for anything that could be blocking the fill valve, such as rust and sediment build-up.

Step 5: Gently remove any blockages you identify.

Checking For Water Level Issues:

Step 1: Look inside your cistern tank and locate the orange ball-shaped float. This is the ballcock.

Step 2: Lift up the arm of the ballcock slightly and look for water flowing into the cistern tank.

Step 3: If water did flow in, this is an indication that the water level is too low.

Step 4: Using a screwdriver, adjust the ball cock height by adjusting the screw.

When To Call A Plumber

Ask a professional plumber to take a look if:

The toilet bowl is still not filling after you have cleared away all debris; you might need to have the valve replaced.

The water level appears to be correct, and there are no apparent issues with the ballcock.

Always call a plumber if you are at all uncertain about how to check or fix a plumbing issue.

For any plumbing and toilet problems you are experiencing in your home, call 24 Hour Plumber on 01 531 2220 to book a local plumber near you.

All repairs by 24 Hour Plumber have a 12-month guarantee. Call us or email now for a free quote.