Aqualine This link opens in a new windowAqualine is an index of trade, technical, and scientific literature on all aspects of water resources. Subjects covered include water resources and supplies management, water legislation, water quality, potable water distribution, wastewater collection, water treatment technologies, wastewater and sewage treatment, and ecological and environmental effects of water pollution. Resource types indexed include journals, conference proceedings, scientific reports, books, and theses from 1960-present.