Hello, I wonder if anyone can help.
A ringing tone has developed when my toilets are flushed. It started at the same time from either toilet in my house. This tone lasts for approximately 10 seconds. I've looked at the cisterns and they are filling as per normal but the last little bit generates the noise. The water tank appears to be acting normally too. I'm not sure what's causing it.
This is very annoying, can anyone point me in the right direction?