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Show PART II PRESENT STATUS Table 8 - Threshold Concentrations of Salinity for Livestock Animals________________________Dissolved Solids Concentrations (mg/1) Poultry 2,860 Pigs 4,290 Horses 6,435 Dairy Cattle 7,150 Beef Cattle 10,000 Sheep 12,000 Generally, livestock are able to consume bacterially polluted water over long periods with no apparent detrimental effects, although water is suspected of transmitting animal diseases. Organic pollution improves the probability of the production of blue-green algaes which are toxic to livestock. Livestock can be infested with waterborne parasitic worms such as tapeworms and flukes which may be transmitted to humans (32). Governmental, Commercial and Other Water Use Generally, water of quality meeting the recommended limits of the Public Health Service Drinking Water Standards of 1962 is adequate for governmental, commercial and other water uses. Water hardness is parti- cularly objectionable to commercial laundries, as it increases soap and detergent consumption, water softening costs, and equipment damage. Distribution Systems and Sources Regional Summary The 1965 Regional M&I intake requirements supplied by various distri- bution systems are summarized in Table 9. Seventy-five percent of these requirements were supplied by surface water sources and the remainder by groundwater sources. 22 |