The steps required to add a new drain connection

Drain pipes to be connected underground

There will inevitably be times when specific drainage repairs and replacements are required around a home or commercial property and this may include adding a new drain connection.

Reasons for New Drainage Pipe Connections

This could be to accommodate a higher level of water usage, to connect the plumbing for a new build property or extension, or to replace an existing unit which is no longer functioning. This task can be a bit more tricky than it initially appears.

Not only must planning permissions be considered, but other factors such as materials and labour need to be taken into account. It is wise to briefly overview these areas in a bit more detail.

Planning and Regulations

We should note that no planning or permission is required to perform repairs that are considered to be “minor” maintenance works.

Still, this will largely depend upon the stipulations set forth by local town councils and planning authorities. It is prudent to consult with these organisations before beginning.

new drains steps

Another concern is whether or not the current sewage system is shared with neighbours or local businesses. If it is, you may incur very costly fees and legal penalties if third parties are not notified.

There are generally three instances when it is necessary to notify the local authorities. These include:

  • The addition of a new underground drainage system
  • Adding an entirely new sewer connection (connecting land drain to sewer)
  • Installing a new bathroom, kitchen or utility room

Some information to be presented includes a basic drainage pipe connection schematic, an existing site plan and an estimate in regards to the cost of the project. Thereafter, an inspection will be required during different stages of the project itself.

Under the Party Wall Act, it is also necessary to notify any neighbours in the event that the new drain connection is located close to a property line. This can help to avoid disputes.

Materials, Depth of Pipes and Other Concerns

Stacked drain pipes

In most cases, pipes made of either uPVC or vitrified clay are utilised. They will normally have a diameter of 100 millimetres. It is also common for these pipes to be backfilled with stones of between 5 and 10 millimetres in size.

It could be mandatory to protect the pipes under specific circumstances. For example, pipes which will be placed under a road will require reinforced concrete bridging. In this respect, it may be necessary to obtain a Section 50 Road Opening Licence.

Shallower pipes may need the addition of a concrete paving slab to protect against compression and settling. Once again, it is wise to consult with the local planning commission to determine any specific requirements.

Access Points for New Drainage Connections

Finally, new drains should be provided with several access points. These are required:

  • At the beginning of each drain run
  • At any bends or junctions
  • In the event that a pipe changes size

Inspection chambers, manholes and access fittings are examples of approved access points.

Labour Considerations

Labour costs and time frames also need to be addressed by those who want to add a new drain connection. Not only must the overall cost be accurately projected, but safety is always a concern.

connecting drains

Some essential tips during ANY drainage project include (but are not necessarily limited to):

  • Avoid standing close to the edge of the trench
  • To avoid a potential collapse, keep the width of the trench to a maximum of 300 millimetres
  • ALWAYS check site plans for the existence of buried electrical and/or natural gas lines.

Please keep in mind that this is only a general overview. To safely and legally add a new drainage connection, it is essential to speak with local authorities.


Express Drainage Solutions for Drainage Connections

Here at Express Drainage Solutions, we have a wealth of experience undertaking new drain connections and underground drainage installation, with specialists in every area – from the planning and design, to gaining the required applications and licences. To find out more, simply give us a call today.

Want more information?Contact us today on 020 8979 5444

EDS unblocked and repaired over 20,000 drains last year for the residents and businesses of London.

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Category: Drainage


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