I am even more thankful that I have this system in place as rainwater is the most reliable and abundant source (especially here in Venezuela). With a good couple of tanks in the roof, and a very simple gravity filtering system and enough bleach stashed away for purifying and the family will have all their needed water, even for drinking (bottled mineral water is far too expensive).
When I started with my own off-grid water supply I had to do some prior testing just to get it working well and not tasting too strong. Sadly, I never got to finish making my house completely off-grid with water usage as the economic collapse kicked in way to sudden and I had to start cutting all of my expenses on the home projects I was working on.
Had I been able to finish my project, my project was to complete the following:
- The first stage was to feed the toilets with crude, untreated rainwater.
- The second one, installing my DIY gravity filters system in the roof right over the kitchen,
- And third, with the stainless pipeline through the roof, all the way down to the secondaries activated carbon filters (with an ozone purifier just as backup in the medium term)
This would have allowed me to be able to use a reserve water supply to keep the house running whether the city pumps were dead or not.
One of my second thoughts on this, was to build a boiling system to purify the rainwater for safe drinking. This would be inside a wood furnace made with bricks, in the kitchen. As with everything homesteaders and preppers do, it should always have a backup reason with multiple uses. I decided a wood furnace for the purpose that it would also be a great way to cook without power or gas, giving me the opportunity to be a bit more self-sufficient in my in-home cooking methods by using a fireplace oven. This would let me cook pizza, cakes (if at the right temperature), chicken, pork and other oven made goods all while acting as a rainwater purifier without having to rely on bleach.
With a small 50-liter rainwater tank on top of the cooking system, I would have another 10-liter tank in the kitchen of already purified water. This is enough for our 4-person family. This furnace would be useful for cooking with wood, too.

If I didn’t have my own home system, I would have had to collect water from local pumps like many Venezuelans every single day.
Don’t forget: there may be a time when you need to be portable
While having an in-home system for water storage and purification is a priority for anyone looking to be prepared, when you need to bug out of the home, whether it be an evacuation, or if you don’t feel safe there anymore, you need to make sure you have portable water storage and filtering methods.
Taking a Big Berkey water filtering system with me would have been a great idea when I had to leave my home. Since my family and I are refugees from an economic collapse, we have had to leave our in-home systems behind as the country is too broken and unsafe for us to be in at the moment. However, the place where we live now is dry, hot and the bottled water expensive, working out to about 3$ a gallon, and I drink one every 3 days just to limit that expense.
For low tech energy supply, I have already mentioned that assessing the consumption needs is paramount. In our extremely hot and humid weather, air conditioning is a need. On the other hand, maintenance and cleaning are becoming much more expensive, and a power failure turns the house into a toaster. This could be partially solved with the assistance of some roof mounted extraction systems, wind-powered. We barely use insulation, and that could be one of the reasons our energy consumption is not optimized.
The roof is just wood, covered on the outside with a non-permeable sheet embedded in tar, and tiles. It looks good if seen from inside, but it transmits a lot of heat to the inner spaces and creates a waste energy. One of the reasons for not having it done before, was the price, and the insects that would get into the roof and the fake ceiling then. In the tropics, there are lots of fire ants, and ticks so it is a necessary design flaw.
Thanks for your comments, questions, donations and especially your prayers, this is much appreciated.
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