10 Year Warranty
Dedicated Customer Support
Proudly USA Owned
Installer Network Approved
Safe for Home and Garden

Rainbay Steel Slimline Tank
The rainwater catchment rule of thumb: 1,000 square feet of roof surface captures 625 gallons of water for every 1 inch of rain that falls. That’s approximately 6,250 gallons of rain water that can be captured for reuse on your property and diverted from our storm drains every year!
- Corrosion proof
- Unaffected by UV Rays
- Will not bulge when filled
- Protection from Bushfires
- Clean Water for Home, and Garden
Proudly Made and Operated in the USA
Founded and based out of Marin County, California. Rainbay is proudly USA owned and Operated.
Built for Homes, Designed for Experts
Bringing our Network of Certified Experts in Architecture, Urban Sustainability, Tax, Construction, and Roofing to your service.
Life Long Construction Warranty from Rainbay
Guaranteed Industry Leading 20 Year Corrosion Warranty and 10 Year Construction Warranty on Steel components. Optional Lifelong Rainbay Warranty extra.
Unsurpassed Quality
Don’t just take our word on it – each tank is Engineered and Certified to American ARCSA Water Standards. Rainbay are the first watertank to become Watermarked for Homes in the USA
Rainroof
Turn your roof into an efficient water catching system

About Us
We engineer our tanks to be safe, long lasting, and provide thousands of homes across America with clean rainwater for their home and Garden.
Still Have More Questions?
Get in touch with our friendly team and we’ll happily guide you through any questions that you might have regarding our water tanks.