Humaira, D. and Jose, L.M. (2009) Bridging Divides for Water. 5th World Water (Water Related Migration, Changing Land use and Human settlements, Istanbul, Turkey, 17-18 March 2009). UNW-DPC Publication Series. Knowledge No. 4., 5.
 World Population Clock (2017) 7.6 Billion People “Worldometer”.
 Currell, M.J. and Han, D. (2017) The Global Drain: Why China’s Water Pollution Problems Should Matter to the Rest of the World. Environment: Science and Policy for Sustainable Development, 59, 16-29.
 Kamarudzaman., A.N., Feng, V.K., Aziz, R.A. and Ab Jalil, M.F. (2011) Study of Point and Non Point Sources Pollution—A Case Study of Timah Tasoh Lake in Perlis, Malaysia. 2011 International Conference on Environmental and Computer Science IPCBEE, IACSIT Press, Singapore, Vol. 19.
 USEPA (1991) “Getting Up to Speed” for Section C, “Ground Water Contamination” Is Adapted from US EPA Seminar Publication. Wellhead Protection: A Guide for Small Communities. Chapter 3. EPA/625/R-93/002.
 Pal, A., Gin, K.Y.H., Lin, A.Y.C. and Reinhard, M. (2010) Impacts of Emerging Organic Contaminants on Freshwater Resources: Review of Recent Occurrences, Sources, Fate and Effects. Science of the Total Environment, 408, 6062-6069.
 Panouillères, M., Boillot, C. and Perrodin, Y. (2007) Study of the Combined Effects of a Paracetic Acid-Based Disinfectant and Surfactants Contained in Hospital Effluents on Daphnia magna. Ecotoxicology, 16, 327-340.
 Kümmerer, K. (2001) Drugs in the Environment: Emission of Drugs, Diagnostic Aids and Disinfectants into Wastewater by Hospitals in Relation to Other Sources—A Review. Chemosphere, 45, 957-969.
 Emmanuel, E., Perrodin, Y., Blanchard, J.M., Keck., G. and Vermande, P. (2005) Ecotoxicological Risk Assessment of Hospital Wastewater: A Proposed Framework for Raw Effluents Discharging into Urban Sewer Network. Journal of Hazardous Materials, 117, 1–11.
 Emmanuel, E., Pierre, M.G. and Perrodin, Y. (2009) Groundwater Contamination by Microbiological and Chemical Substances Released from Hospital Wastewater: Health Risk Assessment for Drinking Water Consumers. Environment International, 35, 718-726.
 Buszka, P.M., Yeskis, D.J., Kolpin, D.W., Furlong, E.T., Zaugg, S.D. and Meyer, M.T. (2009) Waste-Indicator and Pharmaceutical Compounds in Landfill-Leachate-Affected Ground Water near Elkhart, Indiana, 2000-2002. Bulletin of Environmental Contamination and Toxicology, 82, 653-659.
 Ahel, M., Mikac, N., Cosovic, B., Prohic, E. and Soukup, V. (1998) The Impact of Contamination from a Municipal Solid Waste Landfill (Zagreb, Croatia) on Underlying Soil. Water Science & Technology, 37, 203-210.
 Holm, J.V., Rügge, K., Bjerg, P.L. and Christensen, H. (1995) Occurrence and Distribution of Pharmaceutical Organic Compounds in the Groundwater down Gradient of a Landfill (Grindsted, Denmark). Environmental Science & Technology, 29, 1415-1420.
 Garba, T., Babanyara, Y.Y., Ibrahim, D.B. and Lot, I. (2014) Assessment of Underground Water Contamination Due to Early Coal Mining Activities in Nigeria. Journal of Environmental Treatment Techniques, 2, 166-170.
 Giri, S. and Singh, A.K. (2015) Human Health Risk Assessment via Drinking Water Pathway Due to Metal Contamination in the Groundwater of Subarnarekha River Basin, India. Environmental Monitoring and Assessment, 187, 63-77.
 Velthof, G., Oudendag, D., Witzke, H., Asman, W., Klimont, Z. and Oenema, O. (2009) Integrated Assessment of Nitrogen Losses from Agriculture in EU-27 Using MITERRA-EUROPE. Journal of Environmental Quality, 38, 402-417.
 Cruz, J.V., Silva, M.O., Dias, M.I. and Prudencio, M.I. (2013) Groundwater Composition and Pollution Due to Agricultural Practices at Sete Cidades Volcano (Azores, Portugal). Applied Geochemistry, 29, 162-173.
 Werner, A.D., Bakker, M., Post, V.E.A., Vandenbohede, A., Lu, C., Ataie-Ashtiani, B., Simmons, C.T. and Barry, D.A. (2013) Seawater Intrusion Processes, Investigation and Management: Recent Advances and Future Challenges. Advances in Water Resources, 51, 3-26.
 WHO (2011) Guidelines for Drinking-Water Quality. 4th Edition, IWA Publishing, London, 564 p.
 Megremi, I., Vasilatos, Ch., Atsarou, A., Theodoratou, Ch., Economou-Eliopoulos, M. and Mitsis, I. (2013) Geochemical Evidences for the Sources of the Cr(VI) Contamination in Groundwater in Central Euboea and Assopos-Thiva Basins, Greece: Natural versus Anthropogenic Origin. European Water, 41, 23-34.
 Russoniello, C.J., Fernandez, C., Bratton, J.F., Banaszak, J.F., Krantz, D.E., Andres, A.S., Konikow, L.F. and Michael, H.A. (2013) Geologic Effects on Groundwater Salinity and Discharge into an Estuary. Journal of Hydrology, 498, 1-12.
 Umar, M., Waseem, A., Sabir, M.A., Kassi, A.M. and Khan, A.S. (2013) The Impact of Geology on Recharge Areas on Groundwater Quality: A Case Study of Zhob River Basin, Pakistan. Clean—Soil, Air, Water, 41, 119-127.
 Semprini, L., Roberts, P.V. and Hopkins, G.D. (1990) A Field Evaluation of in-Situ Biodegradation of Chlorinated Ethenes: Part 2, Results of Biostimulation and Biotransformation Experiments. Groundwater, 28, 715-727.
 Baier, J.H., Benjamin Jr., W.L., Fronk, C.A. and Kramer, S.J. (1987) Using Reverse Osmosis to Remove Agricultural Chemicals from Groundwater. American Water Works Association, 79, 55-60.
 Young, C.P. (1983) Technical Guidelines for the Rehabilitation of Groundwater Contaminated by Organochlorine Compounds of Industrial Origin. In: Ziglio, G., Ed., Ground Water Contamination with Organo-chlorine Compounds of Industrial Origin, Monduzzi Editore, Bologna, 315-354.