Bathroom plumbing systems may appear simple from the outside, but behind the walls and beneath the fixtures, there are several components working together. Pipes, valves, traps and fittings all play a role in delivering clean water to your bathroom and safely removing wastewater.

Many common bathroom problems — such as leaks, poor water pressure or slow drainage — are linked to how these systems are installed or how individual components wear over time. Understanding the basics can make it easier to recognise where a problem might be coming from.

The guides below explain how different parts of bathroom plumbing work, including toilets, showers, pipework and valves. Each article focuses on a specific part of the system to help you understand common faults and how they occur.