WATER
WATER
GENERAL CONSIDERATIONS
NECESSITY FOR PROPER SUPPLY
HISTORY OF PUBLIC SUPPLY
COMPOSITION OF WATER
CHEMICAL ELEMENTS
FOREIGN INGREDIENTS
STATES OF AGGREGATION
UNIVERSAL SOLVENT
NECESSITY FOR WATER IN BODY
CHEMICALLY PURE WATER
HOW OBTAINED
TASTE OF WATER
HARD AND SOFT WATER
PERMANENT
TEMPORARY
ELIMINATION OF WATER FROM BODY
AMOUNT OF WATER NEEDED FOR ALL PURPOSES
FOR THE BODY
FOR DOMESTIC PURPOSES
FOR CITY USE
WATER WASTE
CAUSES FOR
USES OF METERS
SOURCES OF WATER SUPPLY
RAIN WATER
SUPPLY NOT RELIABLE
EASILY POLLUTED
FILTERING NECESSARY
DESIRABLE FOR LAUNDRY PURPOSES
SURFACE WATER
STREAMS
LAKES
IMPOUNDING RESERVOIRS
SOURCES OF IMPURITIES IN SURFACE SUPPLY
GROUND OR SUBSOIL WATER
WELL WATER
SPRING WATER
TEMPERATURE IN WELLS
SHALLOW AND DEEP WELLS
CONSTRUCTION OF WELLS
SOIL AS A FILTER
METHODS OF PURIFICATION
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