I've gotten lots of requests to describe my rainwater collection system. This system has served me well since I built it 19 years ago so today I will tell you how I built it and show you what makes it work so well. I should point out that I failed to show the four 4" pvc overflow pipes on the back side for when the tank is full. I failed to say that the tank is 22,000 gallons of usable capacity. I also failed to say that it is sealed inside with swimming pool plaster and finally I didn't mention that we have a reverse osmosis system under the sink for drinking water and ice. I also realized later that I misspoke about the UV bulb replacement recommendation from the manufacturer. I said they recommend changing the bulb after 20 hours but of course I meant to say after 20 months. I hope this inspires you as you plan your own system for your off grid paradise.