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Rain Barrel System 220 Gallons SHTF Water Storage

Rain Barrel System 220 Gallons SHTF Water Storage

Here is a video of one man’s Rain Barrel water collection and storage systems. The water collected can be used straight from the barrels for watering your garden or for washing up, but should be purified for drinking or cooking.

[ot-video type=”youtube” url=””]


Shorty Dawkins



  1. If you are going to use that water for human consumption, you better treat it somehow. I would think water collected off of the roof would be questionable at best.

    1. JP,

      That is why I mentioned it would need to be purified for consumption. You can use it direct on your garden or for washing, but don’t use it for cooking or drinking until it is purified.


    2. This comes up periodically. Basically, the cost in material and labor to make roof run off safe for consumption is not worth the effort. Consider that the water may contain petroleum products from shingles and animal fecal matter making it difficult to “”filter”.
      But this water is a good source for filling toilet tanks and watering gardens.
      Use for bathing is dicey unless you know you have no open lesions,cuts, etc.

    3. Food grade Hydrogen per Oxide is the best way to cheaply purify water without boiling it, It can be purchased in gallon jugs:

      Internet search “food grade hydrogen peroxide” and read how to use it. We used it to purify our in ground swimming pool. It is the safest and healthiest chemical treatment for well systems other than ultraviolet treatment systems. I add H2O2 to all my stores of water.

      There are 7.48 cubic gallons of water in a cubic foot. A roof “food print” measuring 36 feet by 24 feet times the feet of rain per year times 7.48 equals the gallons the roof water will potentially yield. Example for an area that receives 17 inches of annual rain fall for the roof food print measuring 36 by 24 feet:
      (36 x 24)(17/12)(7.48) = 9155 gallons of water. Also consider larger 8″ roof gutters with open ends that overflow into a large funnel attached to a down spout; this method will help prevent an debris clogging.

      Storage tanks typically cost one dollar per gallon and grow slime other nasty stuff inside them. An alternative inexpensive holding tank is an above ground swimming pool. They are cheaper per gallon than rain barrels and are easy to keep clean plus they are easy to observe what might be growing in them. A large 32 by 16 by 4 foot above ground pool holds of 17,000 gallons of water costing $1800. If you have electricity, run the filter pump system frequently enough to keep it clean. Covering it helpsn prevent evaporation and unwanted debris out. One could also construct it with walls of veneer supported by an angled exterior truss and lined with heavy mil poly.

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