Your Trusted Supplier for Water Management Solutions
At GRAF UK, we pride ourselves on being a leading supplier of high-quality water management products designed to meet diverse residential, commercial, and infrastructure needs. Our comprehensive range includes everything from rainwater harvesting tanks and wastewater treatment plants to soakaway crates and stormwater management systems.
Why Choose GRAF UK as Your Supplier?

German Engineering
All our products are manufactured to exacting standards, ensuring exceptional durability, performance, and reliability.

Extensive Product Range
Whatever your water management requirements, our diverse catalogue offers solutions for projects of any scale or complexity.

Stock Availability
We maintain substantial stock levels across of our most popular products, across multiple depots, helping to minimise wait times and keeping your project on schedule.

Efficient Delivery
Our streamlined logistics ensure your products arrive promptly and in perfect condition, anywhere in the UK.

Technical Excellence
Every product we supply is backed by decades of innovation and engineering expertise.

Our supply capabilities span the complete water management spectrum:


Rainwater Harvesting
From small garden water butts to large-scale commercial collection systems

Wastewater Treatment
Domestic and commercial sewage treatment plants, septic tanks, and cesspools

Stormwater Management
Attenuation tanks, soakaway crates, infiltration systems, and drainage solutions

Water Storage
Above and below-ground storage tanks for various applications
Whether you’re a homeowner looking for a simple rainwater collection system, a developer planning a large-scale stormwater attenuation scheme, or a facilities manager upgrading wastewater infrastructure, our supply service delivers the right products at the right time.
Ready to explore our product range? Contact our supply team today for expert product advice and competitive quotations.