DIY Home Water Filtration System: Rainwater Harvesting with a Biological Sand Filter and Maintenance
Our off grid home water filtration system is built on-site with 0.35mm filter sand and IBC totes. This advanced DIY rainwater harvesting system design is gravity fed and a resilient way to establish water security in uncertain times. Maintenance is super easy and very infrequent. We use a series of three rainwater harvesting tanks made from IBC totes as the rainwater collection tank, with a biosand slow sand filter tank design and 10,000 gallon underground rainwater cistern.
In this video, we explain the design using a 3D sketchup model that shows the details of our residential rainwater collection system that uses a biological slow sand filter (biosand filter). My goal was to build the best low maintenance drinking water filter for residential use. Most biosand filters are manual use and not automated. I show you how I was able to design and install a rainwater harvesting system at home using primitive sand filter media and create the ultimate solution to water scarcity. Our rainwater system is a site-built underground concrete cistern that utilitzes the foundation walls of our storage shed (with a concrete floor and concrete tank floor) to hold 10,000 gallons of clean rainwater.
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