Water temperature (Cont'd) 



prevention of increases through heated wastes, p. 69 

 primary contact recreation waters, p. 4, 13, 14 

 public water supplies, p. 20, 21 

 recommendations by fresh water species, p. 33, 43 

 salmon, p. 43 

 seasonal fluctuation, p. 42 

 spawning, p. 69 

 streams, p. 43 

 trout, p. 43 



variations and effect of changes, p. 42 

 warm water fish, p. 43 

 see also Temperature 

 Water treatment 



aeration, p. 128, 129 

 boiler feed water; p. 193 

 carbonated beverage industry, p. 212 

 chemical industry, p. 200 

 chlorination, p. 18, 127, 128, 129 

 coagulation, p. 18 

 cooling water, p. 193 

 demineralization, p. 206 

 farmstead water supplies, p. 121, 122, 127 

 filtration, p. 1 8 

 heat treatment, p. 128 

 industrial plants, p. 206 

 industrial water, p. 193 

 irrigation water, p. 176 

 leather industry, p. 213 

 oil industry, p. 203 

 neutralization, p. 128 

 sedimentation, p. 18 

 steel industry, p. 206 

 textile industry, p. 197 

 ultraviolet radiation, p. 128 

 water purification, p. 206 

 water softening, p. 128, 129, 206 

 water supplies, p. 18 

 Water types 



calcium-magnesium, carbonate-bicarbonate, p. 168 

 calcium-magnesium, sulfate-chloride, p. 168 

 sodium-potassium, carbonate-bicarbonate, p. 168 

 sodium-potassium, sulfate-chloride, p. 168 

 Water utilization 



canneries, p. 208, 209 



carbonated beverage industry, p. 211 



cement industry, p. 214 



chemical industry, p. 200 



food cleaning, p. 208 



Water utilization (Cont'd) 



food industry, p. 208 



leather industry, p. 213 



lumbering, p. 197 



metals industry, p. 204 



oil industry, p. 202 



pulp and paper industry, p. 198 



steel industry, p. 205, 205 



textile industry, p. 196 

 Waves (water) 



plant growth, p. 55 

 Wells 



water pollution, p. 1 1 1 



water quality, p. 122 

 Wildlife 



alkalinity, p. 38 



animal diseases, p. 98 



conservation, p. 5, 6 



criteria, p. 10, 11,38,93 



disease prevention, p. 38 



dissolved oxygen, p. 38 



light penetration, p. 38, 96 



nuisance algae, p. 97 



pesticides, p. 97 



pH, p. 38 



rare and endangered species, p. 98 



recommendation, p. 98 



salinity, p. 38 



toxic substances and habitat, p. 38 



waterfowl — basis for water quality requirements, p. 87 



water free of surface oil, p. 96 



water quality, p. 38, 93-98 



see also Waterfowl 

 Wildlife habitats 



toxic growths, p. 97 

 Wildlife management 



salinity, p. 95 

 Wild rivers 



water quality above minimum requirements, p. 6 



Xylene 



irrigation water, p. 158 



Zinc 



dimethyl dithiocarbamate growth inhibitor, p. 60 



phytotoxicity, p. 155 

 toxicity — fresh water, p. 60 

 toxicity — sea water, p. 88 



U. S. GOVERNMENT PRINTING OFFICE : 1972 O - 462-246 



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