What Is Drainage?

A drainage system is a system of pipes or other systems that are designed to remove water from a given area. It can include public or private property piping. These systems carry sewage and liquid waste to disposal sites. The main purpose of a drainage system is to keep a building dry and healthy by removing water as quickly as possible. They also help prevent deadly gases from reaching sewers and septic tanks.

Trench drains

Trench drains are an important part of a drainage solutions in Christchurch. They are typically made of concrete, fiberglass, structural plastic, or steel. They are often precast in a factory, which saves both time and money. Additionally, they are easy to assemble. A good contractor can help you choose the material that best suits your needs.

Trench drains are important in protecting public roadways. They help remove water that builds up on roads, reducing the risk of hydroplaning. There are many types of trench drains, including channel drains, line drains, and open trench drains. They have movable grates and can protect areas from erosion. Some trench drains can also be combined with sump pump systems.

In Christchurch, many homes still use Earthenware pipes for drainage. However, they can be damaged by earthquakes, causing significant value loss if not repaired. If these pipes are damaged, they can fill with sewage, which can be knee-deep.


The purpose of a soakaway is to divert water away from a property to reduce waterlogging and prevent flooding. They are essentially a series of holes dug into the ground, filled with soil and coarse rocks and rubble. Water in these holes slowly seeps into the soil, increasing soil moisture content and recharging groundwater. The downside of soakaways is that they can sometimes become blocked or lose their effectiveness over time, so it is important to choose the right one.

When installing a soakaway, an installer will run 110mm drains to the entrance, lay them down, and backfill them with pea shingle. In addition, silt traps can be installed upstream of the soakaway to catch excess dirt and prevent it from filling. After the soakaway has been installed, a soakaway tester is used to check that the system is functioning properly. The tester digs a 300mm-square hole, pours in 10 litres of water, and waits two hours.

Earthenware pipes

Many Christchurch homes still rely on earthenware pipes for drainage, but the problem is that they’re extremely vulnerable to damage in an earthquake. A damaged sewer drain can damage a home’s value and cause it to be difficult to sell, or even make it impossible to sell. Worse, unrepaired sewers can lead to knee-deep sewers in the future.

Soakaway system

A Soakaway drainage system is a green way to manage surface water. It involves the use of relatively few materials and deals with the water where it originates. In this way, it avoids adding to the burden on council drainage systems and reduces water pollution. The design also avoids the need to treat water with chemicals before returning it to the eco system.

The installation process is relatively easy. The first step is to knock out the circular inlet area. This will allow the drainage pipe to slide into the crate.

CCTV drain surveys

If you’re experiencing blockages or slow draining water, CCTV drain surveys can provide you with valuable information. CCTV drain surveys are certified by the Christchurch City Council. A CCTV drain survey will also identify any other issues within a drainage system. You can get a CCTV drain survey by calling Canford Drains.

CCTV drain surveys use specialized equipment to see inside your pipes. This allows technicians to pinpoint where blockages are, and what’s causing them. It can also locate tree roots, which can cause a clog. Push rod cameras can inspect pipes up to 1500mm in diameter, and crawler cameras are capable of working in small pipes up to 300mm in diameter.

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