How Do Sewage Systems Work?

Most homes in the UK are connected to a main sewer line, which transports wastewater away from your property to a treatment facility. If your property isn’t connected to the mains, you might rely on a private sewage system such as a septic tank or sewage treatment plant.

Before installing or upgrading a system, it’s crucial to understand the legal requirements involved. In the UK, certain systems may require a permit depending on discharge volume, location, and environmental sensitivity. You can find detailed guidance on this from the UK Government's official septic tank permit guide.

Common Types of Sewage Systems

The three most common domestic systems are mains drainage, septic tanks, and sewage treatment plants. Each has different maintenance needs. While mains connections are mostly hands-off, private systems require routine checks and occasional emptying or repairs.

Signs of a Sewage Problem

If you notice slow drains, foul smells, gurgling pipes, or damp patches in your garden, it could point to a blockage or leak in your system. Don’t ignore these signs — early action can prevent serious damage or contamination.

Maintaining a Healthy System

Never flush items like wet wipes, fats, oils, or sanitary products down the drain. These are major culprits for blockages. If you have a septic tank or treatment plant, schedule regular emptying and inspections as recommended by the manufacturer.

When to Call a Professional

If you suspect a blockage or backup, it’s best to call a drainage engineer. DIY fixes often don’t reach the root of the problem. A professional can carry out a CCTV survey and advise on long-term solutions without unnecessary disruption. Learn more about our sewage treatment plant services here to see how we handle everything from inspection to installation.