GRAF UK Shop | Rainwater Harvesting & Stormwater Management

Rainwater Harvesting

As the European Market Leader, GRAF provides innovative rainwater harvesting solutions from small domestic setups to extensive commercial installations.

We pride ourselves on delivering systems that lead the market in terms of sustainability and efficiency and set the standard across Europe.

View Rainwater Harvesting Tanks

Sewage Treatment

Mechanical or partially biological wastewater cleaning: septic tanks

Mechanical septic tanks retain floating solids and solids that will settle in domestic wastewater. This is a purely mechanical form of treatment. Partially biological septic tanks have three chambers, offering not just mechanical cleaning but, due to the longer throughflow time, partially biological cleaning too.

View Septic Tanks

Stormwater Attenuation

We pride ourselves on our unmatched ability to deliver stormwater attenuation crates faster than any other provider in the country.

If you find a faster service, we promise to beat it. With over a decade of experience installing attenuation tanks, no other manufacturer in the UK can claim the same expertise that we bring to every project.

View Stormwater Tanks

Garden

At GRAF UK, we are dedicated to connecting a water butt to every home in the UK.

We understand the critical importance of reusing rainwater to conserve this precious resource and empower homeowners and gardeners to nurture their gardens sustainably.

View Garden Water Butts

Rainwater Complete Packages

Underground Tanks

Water Butts

Wastewater Treatment

Stormwater Management

We believe that we can all do more to help save water. In the future everyone will realise how precious it is.

We’re immensely proud to be the UK’s fastest-growing supplier of sustainable water management systems in the UK. Rainwater harvesting systems can provide both domestic and commercial buildings with recycled rainwater to save on mains water usage. Our tanks and filter packages range in size to suit any type of building. From our 1500 litre Platin tank, right up to our 52,000 litre Carat XXL tank, we have a solution for all applications. We’re based in Banbury and we’re on a mission to help change the world.

Rainwater Harvesting

Sewage Treatment

Stormwater Attenuation

Garden

Not sure where to start?

Use any of our free-to-use sizing tools to find out what size system you need for your project.

Tank Size Calculator

If you’re interested in rainwater harvesting and would like to know what size and type of system would be best for project, then click the button below to use our rainwater harvesting tank size calculator to find out.

Use our Tank Size Calculator

Sewage Treatment Plant Configurator

Need a sewage treatment plant for your project but don’t know what size or type of system is best for you? Then click the button below to use our 8-step sewage treatment plant configurator which will walk you through choosing the right system for your project.

Use our Sewage Treatment Plant Configurator

Stormwater Attenuation Tank Sizer

If you would like to install a GRAF stormwater attenuation tank for next development but don’t know what size tank or type of crate you need. Click the button below to use our simple stormwater attenuation tank sizer which will do all the work for you.

Use our Stormwater Attenuation Tank Sizer