Rain Water Storage for Drinking Purpose

http://en.wikipedia.org/wiki/Water_purification

What volume ? (5 , 50 , 500 , 50000 , 500000 . . . . cubic meters)

HI: Hendrik,

this is about 5 million liters.

for the socity which has the dependency on the rain water.

5000 m3 You have a few options.

1) inflow at ground level - construct an earthen dam in a water course (150m across x 150 fetch x 2m deep will store about 10000 m3.) The water will get soiled and polluted and may need treatment or clearing before use. and some will be lost due to evaporation.

2) outlet at ground level - Construct a covered circular reservoir (50m dia x 2.5 deep)

and fill with clean water - check quality before use.

3) each household can store water from the roof of the dwelling in tanks.

The water can get contaminated (bird droppings , dust , acid rain etc) and the quality should be monitored)

You need to calculate the requirements carefully.

In SA the minimum is set by legislation at 6 m3 per household per month. (at least 30 - 100 m3 per household in 5 months.)

nice wordsHendrik,

we can stroe the rain water at roof top of every house, can we find out some cheapeset and technical sustainable way to do it?

or

the small reservers is anouther option likely with the capacity of 1 or 2 million liters

but the question is:

the store water (not moving/floting for long time) get infected and bacteria can develope in to this, How we can save and make it pure for long time technicaly?

we have to charge some chemical or O2 to make it fress?

kindly put comments?

For gathering and storing http://www.jojotanks.co.za/

The tank is filled through the gutter down pipe.

Here is a link. A lot of the islands countries depend on rain water for there drinking water source.

http://www.ircsa.org/abs/1st/184waller.htm