Water quality management is a leading issue confronting Hawaii's water resources. This report summarizes the projects in progress by the Water Resources Research Center at the University of Hawaii. The total program of the Center was marked by a sharp upswing in 1971-1972. The Office of Water Resources Research allotment and matching grant programs now account for about one-third of the Center's programs. The others include several major projects concerned with the solution of practical problems: quality of coastal waters, water recycling from sewage effluent, water quality data bank, and pumping well tests data analysis. Nearly all allotment projects are de facto matched by funds, services, and other participation contributed by water agencies in the state.