Coalition Groundworks
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Serving Surrey, Hampshire & West Sussex

Coalition Groundworks Water Ways & Drainage Solutions

Water Ways & Drainage Solutions

Managing water properly is one of the most important parts of any groundwork project. Poor drainage can lead to flooding, erosion and long-term structural problems - issues that are far more costly to fix later.

Every site presents its own challenges. Clay soil may drain slowly, while sloped or rural sites can suffer from erosion or pooling. Our team begins by assessing the ground conditions and water flow so we can create a drainage plan that suits your land. We then carry out all aspects of the work - excavation, trenching, pipe laying, chambers, soakaways, and surface reinstatement, using the right materials and methods for each location.

Our Drainage & Waterway Services Include:

Drainage Systems & Soakaways

Trenching & Pipe Laying

Pond & Lake Construction

Reservoirs & Water Storage

Ditches & Watercourses

Drainage Services

Manage water effectively...

We help homeowners, developers and rural property owners across Surrey, Hampshire and West Sussex manage water effectively on their land. From soakaways and pipework to ponds, reservoirs and watercourse management, we design and install practical systems that keep sites stable, dry and compliant.

You get dependable drainage and the peace of mind that your groundwork has been done properly from the start.

FAQs

Answers to some of the most common questions about our drainage and waterways services.

How do you determine the right drainage system for a site?

Before any work begins, we assess the site’s conditions in detail — including soil type, gradient, natural water flow, and the way the land will be used. We use this information to design a system that manages water effectively without over-engineering, ensuring long-term performance and compliance with local drainage requirements.

Will installing a drainage system completely prevent flooding?

A properly designed drainage system will significantly reduce the risk of surface flooding, waterlogging and erosion. It can’t control extreme weather events, but it will manage everyday rainfall efficiently — directing water away from buildings, roads and open ground.

Do I need permission or approval for drainage or waterway works?

Sometimes, yes. Smaller domestic soakaways and garden drainage usually don’t require formal approval, but if you’re altering an existing watercourse, creating a new outfall, or working near streams, rivers or ditches, you may need consent from the Environment Agency or your local authority.

What happens if poor weather disrupts the work?

Weather is always a factor in groundwork projects, especially those involving excavation and drainage. Heavy rain or very wet ground can make conditions unsafe or reduce the quality of installation. If that happens, we’ll pause work and reschedule at the earliest suitable opportunity, keeping you fully informed throughout.

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