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Rainwater Harvesting
Rainwater harvesting system
Our complete tank packages include everything you need to get started, including tank, lid & pump
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A wide range of water butts, rainwater barrels & rainwater harvesting products. FREE UK delivery and a choice of water butt taps to choose from too! We have a stunning range of decorative water butts and tanks in different sizes and colours, 2-in-1 water butts with built-in planters, water butt columns up to 2000 litres, stone and wood effect water tanks, and large capacity round rainwater tanks and square water butts. Our garden water tanks are perfect for gardens, allotments, schools, holiday parks, leisure centres, and business parks. Save water, save money. Nurture your garden.
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Water butts
A wide range of water butts, rainwater barrels & rainwater harvesting products. FREE UK delivery and a choice of water butt taps to choose from too! We have a stunning range of decorative water butts and tanks in different sizes and colours, 2-in-1 water butts with built-in planters, water butt columns up to 2000 litres, stone and wood effect water tanks, and large capacity round rainwater tanks and square water butts. Our garden water tanks are perfect for gardens, allotments, schools, holiday parks, leisure centres, and business parks. Save water, save money. Nurture your garden.
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Winning team at Madic Day
Posted by Callum Vallance-Poole, on July 24, 2025.
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Home
Products
Rainwater Harvesting
Rainwater harvesting system
Garden-only systems
Domestic systems
Underground tanks
Water Butts
Pumps
Filters
Accessories
Sewage Treatment
Sewage treatment plants
Septic tanks
Cesspools
Slurry & silage tanks
Non-Electric Sewage Treatment Plants
Stormwater Attenuation
EcoBloc Maxx
EcoBloc Inspect Flex
EcoBloc Core
Rain Bloc
Infiltration Tunnel
Geotextile
Garden
Water butts
Raised beds
Downpipe Filters
For Allotments
Accessories
Underground Water Tanks
Underground Tanks
Firefighting Tanks
Potable Water Tanks
Slurry & Silage Tanks
Cesspools
Services
Design
Supply
Installation
Commissioning
Maintenance
Warranty
Sizing Tools
Rainwater harvesting tank size calculator
Wastewater Treatment System Sizer
StormFlow calculator
Water Butt Calculator
Knowledge Hub
Blog
Video Library
Case Studies
FAQs
Downloads
Brochures
Bim Data
Certifications
Dimension Drawings
Installation Instructions
Specification Sheets
Standard Details
GRAF LIFE
Newsletter
News/Articles
About GRAF UK
Company mission
Company history
Sustainability
Company locations
Our Company Values
Meet the Team
GRAF Partners
Contact
