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Stormwater attenuation and
surface water drainage management

A combination of climate change and urbanisation is putting pressure on existing surface water infrastructure and increasing the risk of flooding. Floods take an emotional toll on individual homeowners and small businesses. In many cases, flood damage can be devastating. Plus, the financial cost for restoration is huge, regardless of whether it’s a single-family home, an apartment building or a large commercial establishment. That’s why we take stormwater management seriously and have developed systems that take flood prevention to the next level.

Stormwater management systems


Sustainable Urban Drainage Systems (SUDS) Whitepaper

Stormforce - Wavin's stormwater solution service

For a risk free, no hassle single source service, StormForce can get your tanks in the ground on time. StormForce is a powerful new ally for developers, contractors and civil engineers: a single-source solution to the design, supply and installation of stormwater tanks and all their associated infrastructure. Wavin takes care of everything, extending our stormwater expertise to provide a turnkey solution that brings our renowned quality to every phase of a project, including installation by fully trained StormForce partners and warrantied handover on completion.

What is a soakaway?

Soakaways also known as drainage pits are a simple way of collecting and dispersing surface and stormwater when the connection to the domestic drain system is impractical. Soakaways are a long-established way of dealing with rainfall. They are essentially a pit in the ground into which you run your rainwater drainage. 

The overall idea is much the same — a way of disposing of surplus water slowly, by directing it away from the house or hard standing and letting it seep into the ground. This mitigates flooding and stops damage to the house and its foundations.

Recent changes to legislation along with an increase in flooding have forced building developers to reconsider how water is managed within their developments. In turn, this has prompted designers to rethink how to manage water using Sustainable Drainage Systems (SuDS) such as our AquaCell crates.

How to build soakaway - Construction worker stacking soakaway crates v2

How to build a soakaway?

Constructing a soakaway is a relatively simple affair. You dig a hole in the ground and then backfill it with some material which will have enough voids in it to absorb large volumes of water and yet strong enough to be covered over so that you wouldn’t know it was there. When it comes to constructing a soakaway, the traditional way was to dig a hole and fill it with broken brick and builder’s rubble. This is cheap to do, but it limits the actual volume available for the rainwater to collect. The modern option is to use dedicated plastic boxes, known as soakaway or attenuation crates. These leave virtually the whole space open to be filled with rainwater and are therefore much more effective. The crates can be assembled two or three deep and clipped together for strength, and in varying depths.