The symposium on Oil Field Subsurface Injection of Water was presented at a meeting held in Fort Lauderdale, Fla., 17—18 January 1977. The symposium was sponsored by the American Society for Testing and Materials through its Committee D-19 on Water. C. C. Wright, Arabian American Oil Company, Dennis Cross, Aramco, Services Company, A. G. Ostroff, Mobil Research and Development Corp., and J. R. Standford, Nalco Chemical Company, presided as symposium cochairmen and coeditors of this publication.