No matter how fast a city is growing or how much money its inhabitants are making, if it has an impure water supply or a bad sewage system, there will be disease and death, suffering and unhappiness among its people, which no amount of money can make up for.

Cleanliness is not only next to godliness, but one of the most useful forms of it; and a city can afford to spend money liberally to secure it--in fact, it is the best investment a city can make.
Artesian and Deep Wells.

The earliest, and still the most eagerly sought-for, source of pure water supply is springs or deep wells, such as we have referred to.

Both of these are fed by rain water which has fallen somewhere upon the surface of the earth.

As the layers of earth or rock, of which the crust of the earth is made up, do not run level, or horizontal, but are tilted and tipped in all directions, this rain water soaks down until it reaches one of these sloping layers that is so hard, or tough, as to be waterproof, and then runs along over its surface in a sort of underground stream.