introduction 



WATER QUALITY requirements differ so 

 widely for the hundreds of uses to which 

 water is put industrially that no meaningful criteria 

 for surface water supplies can encompass a ma- 

 jority of such uses. Furthermore, water treatment 

 technology in its present state of development per- 

 mits the utilization of surface water of literally any 

 available quality to create waters of any desired 

 quality at point of use. Such treatment may be 

 costly, but this cost is usually a small part of the 

 total production and marketing costs. The National 

 Technical Advisory Subcommittee for Water Qual- 

 ity Requirements for Industrial Water Supplies has 

 identified the appropriate quality characteristics of 

 raw waters that have been used and the quality 

 requirements of waters at the point of use for each 

 industry. 



Each value given in this report for a quality 

 characteristic of raw water supplies for industrial 

 purposes has occurred in water that has been used 

 somewhere in this country. However, the charac- 

 teristic values may be altered by treatment to pro- 

 duce the quality of water required at point of use. 

 Hence, tables listing desired water quality criteria 

 at the point of use prior to internal conditioning 

 have been developed for each major industrial 

 requirement. 



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