Natural Methods of Water Purification
BY FREEZING
SELF-PURIFICATION
WATER VEGETATION
DILUTION
STORAGE AND SEDIMENTATION
SUNLIGHT
Artificial Methods of Water Purification
DISTILLATION
BOILING
FILTRATION
CHEMICAL PURIFICATION
Swimming Pools
SANITATION OF
SWIMMERS INSTRUCTED IN POOL SANITATION
SEWAGE AND REFUSE DISPOSAL
Methods of Sewage Disposal
DRY
WET
Sewage Purification
SCREENED
SEPTIC METHOD
Refuse Disposal
INCINERATION
CITY COLLECTORS
CHAPTER VII
WATER
GENERAL CONSIDERATIONS
Necessity for Proper Supply
One of the most important requisites in maintaining the organization of the material in the living body is a proper supply of water. It is absolutely indispensable to the expression of animal and vegetable life. Although not classed as a food it enters into the composition of food and hence becomes an essential article of diet.
The greatest value has always been placed upon a sufficient supply of pure water. The history of the race shows that the earliest settlements were made with a view to obtaining a supply of water; they were either on waterways or in places where water was easily obtainable from springs or shallow wells.
Water is needed not only as an article of diet, but it is also required for sanitary purposes: for cleansing the body externally, for washing clothes, and also for sprinkling streets and for other purposes such as sewage disposal in the thickly populated centers. Even in ancient times great sums of money were expended for the public supply of water.