nicipal, industrial, or other discharges, or 

 agricultural practices that will settle to form 

 putrescent or otherwise objectionable 

 sludge deposits; 



(2) Free from floating debris, oil, scum, and 

 other floating materials attributable to 

 municipal, industrial, or other discharges, 

 or agricultural practices in amounts suffi- 

 cient to be unsightly or deleterious; 



(3) Free from materials attributable to mu- 

 nicipal, industrial, or other discharges, or 

 agricultural practices producing color, 

 odor or other conditions in such a degree 

 as to cause a nuisance. 



Additional quality characteristics of surface 

 waters that have been used as sources for industrial 

 water supplies are summarized in table V-3. The 

 specific water characteristics are maximums and 

 no water will have ail of the maximum values 

 shown. 



Because of the very extensive use of water for 

 cooling and boiler-feed purposes, the quality char- 

 acteristics for surface waters for these purposes 

 have been given special emphasis. In general, the 

 surface water quality characteristics for process 

 waters are applicable for the 2-digit SIC group of 

 industries. 



Part I. 

 steam generation 

 and cooling 



190 



