Our roofs are natural rain water collectors. Whether we live in a house, a townhouse or condominium, chances are that we have at least one downspout that we can
set up to access rain water, either now or else later, when the earthquakes and/or lack of electricity have ended our current water supplies.
This water will need to be purified before it is drunk or used for cooking or bathing -- remember that the skin absorbs water easily, so it will also absorb any pathogens!
However, rainwater can be used (as is) for watering our gardens and orchards. We can also boil it for washing dishes or clothes, as well as for bathing. And we can filter it and boil
it for drinking purposes.
The downspout pours its water into a large water barrel. Make sure that the water barrel
is covered, or you may find a drowned squirrel in your water, as I once did!
Here is a plastic water barrel
(try to get BP-free plastic) with a stainless steel mesh over its opening:
You can attach an overflow hose high up on the barrel side
and let the extra water go out to a tree or vegetable bed, or you can connect the overflow hose into another barrel. In this way, you can have many water barrels lined up in a row, which allows you to store more water during the rainy times.
Each barrel should have a lid that comes off easily for cleaning, and also a spout near the bottom of the barrel. If you can, raise your barrels
at least 10 inches from the ground so that you can easily collect the water from the spout, or else put the spout up about 8 inches from the bottom of the barrel. Or, even better, you can attach a hose so that you can collect water without stooping.
Do a Google Images search to see various examples, and then go to your favourite hardware store and see what they have available. Shop online too.
Of course, a filter at your eavestrough would save you and your back from cleaning out the water barrels too often:
How fancy can your rain water collection system get? Here
are two pretty sophisticated set ups:
Notice the slight downhill slope to the barrels in the photo above. This allows for each overflow
pipe to easily fill the next barrel. They are also in a shady spot and under an overhanging roof so that the sun or a snowfall cannot damage the plastic.
Water will not always be as easy to get as it is now, so setting yourself up for some rain water collection may be the smartest thing that you do!