about us

about our company

north west drainage

We are at the forefront of the ever-changing drainage business. We not only unblock drains but also lead the movement to change the industry and modernise the sewer pipe system that is becoming increasingly not fit for purpose!

The North West area of England is outgrowing its drains and sewers. The combined sewer system originally built over 150 years ago for our domestic homes and businesses has served us well, but it was designed for smaller towns and villages with more green surfaces. The combined challenges of the local areas growing population, changing land use and changing climate mean that if we continue to rely on our current drains and sewers, we face an increased risk of flooding.

To make the most effective use of our existing and planned drainage infrastructure and avoid increased flood risk, we need to change how the North West’s drainage system operates. Rainwater should be managed as a valuable resource rather than a waste product. We need to roll back the tide of impermeable surfaces. They should be replaced with ‘sustainable drainage’ systems that mimic the ways that nature manages rainwater and add to the services provided by our existing drains and sewers. The need for more sustainable drainage is now widely recognised internationally and embedded in our national and local planning systems.

drainage service in the north west

The climate of the future is likely to be increasingly different from that of the past. The North West area of England like the rest of the country is expected to experience warmer, wetter winters and hotter, drier summers. It is also expected there will be more frequent and intense extreme weather events, such as heatwaves and heavy rainfall events. By the middle of the century, the probability of a rainstorm likely to overcome the drainage system will have increased from a 1 in 30 (3.3 per cent) chance to a 1 in 13 (7.7 per cent) chance in any one year (UK CIP, 2002).

Like all area, the North West has a high proportion of impermeable surfaces, which prevent water from soaking into the ground. As well as this, the clay soils found under parts of the surface reduce the rate of infiltration, which results in more water at the surface. This is often used as a reason not to install sustainable drainage solutions. However, there is a range of sustainable drainage techniques that do not depend on infiltration. The soils in most areas have some degree of permeability and should be tested in line with best practice (BRE, 2016).

The North West also has relatively old drainage systems. Routinely built to very high standards, it was designed to manage lower return period storms than now used and to cater for a smaller population. In general, the drainage system can be split into two distinct systems. There is a combined sewer system that carries both rainwater and foul water in the same pipework and sewers to the major sewage treatment works in the local area. The key challenge in the combined sewer area is that rainfall can quickly fill the sewers. This leads to overflows into the rivers of untreated sewage mixed with rainwater.

These are known as combined sewer overflows (CSOs). These projects are considered necessary to address the current problems of combined sewer overflows into the main rivers. These problems are basically caused by the rainwater flowing into the combined sewer network. This will not increase capacity in the combined sewer system but will prevent all but the most severe sewer overflows into the main rivers. The local water authority is also progressing towards modernising the local drainage systems but up until then, companies like ourselves will be used to professionally unblock sewers, drains and pipes in the North West area!

Address: 92-96 Lord St, Southport PR8 1JR

Liverpool One Drainage are providers of services connected with drains and sewers

Areas Served

The city of Liverpool and connected suburbs like Birkenhead, Birkdale, Bootle and Wallasey.

24/7, 365 days a year

Phone: 0151 3742809