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Prior to this time the financing of sewage treatment plants was a diffi- <br />cult matter. There is some division of authority in the statutes between <br />th e St,ata Denarbaent of Riblic Health and the Game and Fish Commission. <br />The Game and Fish Commission is empowered to supervise waters of the <br />State pertaining to the protection, management, and propagation of fish <br />life. <br />POLLUTION PREVENTION MEASURES NEEDED <br />Present water uses, increased or additional uses possible with <br />improved water quality, and protection of water rights and property <br />values largely determine the pollution measures needed. The objective <br />of a water pollution control program is to preserve or reclaim water to <br />best serve these interests. Treatment requirements, like other aspects <br />of water resources development and conservation, are generally influenced <br />by economic considerations, intangible moral obligations, aesthetic values, <br />and nuisance conditions which exert powerful and salutary influences on <br />the justification of waste treatment facilities. <br />Water quality objectives have been fairly well developed for such <br />water uses as domestic and industrial water supplies, recreation, bathing, <br />and support of fish life. Water quality objectives are less well defined <br />for other uses. However, quality objectives for the various water uses <br />have been established as tentative guides for both municipal and indus- <br />trial waste treatment by the State water pollution control agencies of <br />the 10 Missouri Basin States, which include Colorado, Nebraska, and <br />Wyoming. <br />Among the more important objectives of a water pollution control <br />program is the protection of water quality in streams used as sources of <br />public water supplies. The quality of raw water is an important factor <br />in the design of water treatment facilities and in their operation and <br />maintenance. The factor of safety which can be incorporated in the best <br />water treatment facility varies inversely with the concentration of bac- <br />teria and toxic elements in the source of supply. Therefore, public <br />health and waterworks officials generally measure water quality in terms <br />of its bacteriological, physical, and chemical characteristics. While <br />definite standards of raw water quality have not been adopted, the Manual <br />of Recommended Water Sanitation Practice, Public Health Service Bulletin <br />No. 296, 1946, recommends the following guides: Underground waters not <br />subject to any possible contamination and meeting in all respects the re- <br />quirements of the Public Health Service Drinking Water Standards as shown <br />by satisfactory, regular and frequent sanitary inspections and laboratory <br />tests, require no treatment. Underground or surface waters subject to <br />a low degree of contamination not averaging more than 50 coliforms <br />( .P.N.)* per 100 ml. of sample in any month and meeting the require- <br />ments of the Public Health Service Drinking Water Standards in all <br />other respects should receive a minimum of simple chlorination or its <br />equivalent. Waters which require filtration treatment for turbidity <br />and color removal, waters of high or variable chlorine demand, and <br />'*'bst probable number. <br />34 <br />