GEMUNU HEATH (2006); Contributor/Co Author - “Sustainable Groundwater Management in Asian Cities”, Preliminary Report for World Water Forum IV, Institute for Global Environmental Strategies (IGES), Kanagawa, Japan.
GEMUNU HEATH and UDITHA R RATNAYAKE (2006); Groundwater Resource Management in Sri Lanka, Chapter on the summary report for World Water Forum IV, on Sustainable Groundwater Management in Asian Cities, Freshwater Resources Management Project, Institute for Global Environmental Strategies (IGES), pp. 60-70.
GEMUNU HEATH (2006); Co -author - “Rationalization of Industrial Sector Water use is the Key to Sound Ground Water Management”, Policy Brief of the Institute for Global Environmental Strategies (IGES), Policy Brief No. 4, March 2006.
GEMUNU HEATH and UDITHA RATNAYAKE (2007); The Study of the Management of Groundwater Resources in Sri Lanka, The final report of Research on Sustainable Water Management Policy, Institute for Global Environmental Strategies (IGES), 2007, pp 110-135.
GEMUNU HEATH (2009); Book chapter - “Eco‐Industrial Clusters in Urban‐Rural Fringe Areas”: A strategic Approach for Integrated Environmental and Economic Planning, Asian Institute of Technology, August 2009.
UDITHA RATNAYAKE, and GEMUNU HEATH, (2010); Co Author; World Water Assessment Programme, Case Study in Walawe basin Sri Lanka, A contribution to the United Nations World Water Assessment Program.
GEMUNU HEATH (2006); Overview of Groundwater Management, the Agrowell Program, and the Impact of the 2004 Tsunami in Sri Lanka, journal of the International Review for Environmental Strategies, Institute for Global Environmental Strategies, vol. 6 number 2, pp. 373-386.
GEMUNU HEATH (2006): Pollution inflows to Mahaweli river from Kandy city suburbs; a case study from Sri Lanka, International Water Association (IWA) publication on Southeast Asian Water Environment 1, pp 131-139.
GEMUNU HEATH and UDITHA RATNAYAKE (2006); Policy needs for a Sustainable Management of Groundwater Resources in Sri Lanka, Proceedings, 32nd WEDC conference, November 13-17, Colombo Sri Lanka, pp 131-134.
GEMUNU HEATH and UDITHA RATNAYAKE (2006); Groundwater Management Issues in Sri Lanka, Proceedings of the fourth International Symposium on southeast Asian water environment, December 6-8, Bangkok, Thailand pp. 83-90.
GEMUNU HEATH and UDITHA RATNAYAKE (2006); Water Quality Issues in Lower Kelani Basin, Proceedings the International Conference on Water in the Humid Tropics, December 4 2006, Kandy, Sri Lanka.
GEMUNU HEATH and THUSITHA AMARESEKERA (2007); Assessment of Urban and Industrial Pollution on water quality: Kelani River, Southeast Asian Water Environment 2, International Water Association publishing, 2007, pp 91-98.
GEMUNU HEATH and UDITHA RATNAYAKE (2007); Urban Groundwater Management Issues in Sri Lanka, “Engineer”, Journal of the Institute of Engineers, Sri Lanka, Vol. XXXX, No. 4, October 2007, pp 123-128.
GEMUNU HEATH and UDITHA RATNAYAKE (2008); Groundwater Quality Problems and Issues in the Dry-Zone of Sri Lanka with Special Reference to Fluoride contamination and the Chronic Kidney Disease, Proceedings of the Sixth International Symposium on southeast Asian water environment, October 29-31, Bandung, Indonesia pp. 415-422.
GEMUNU HEATH and UDITHA RATNAYAKE (2008); Sustainable groundwater management in Sri Lanka – Policy needs, proceedings workshop on “Groundwater in Sri Lanka –“A most precious but highly threatened resource”, Occasional Publication 1-2008, National Academy of Sciences of Sri Lanka, pp 18-29.
UDITHA RATNAYAKE and GEMUNU HEATH, (2008); Trends of Change of Water Resources of Uda Walawe River Basin, Proccedings of Workshop on Walawe Basin Case Study for World Water Assessment Programme, Embilipitiya, Sri Lanka
MANNAPPERUMA WMGCK, ABEYASEKERA CL, WERELLAGAMA DRIB, HERATH GBB (2008); A chromogenic method for detecting coliform bacteria and Escherichia coli for water quality assessment in Sri Lanka, Proceedings Peradeniya University research sessions 2008, pp 332-334.
GEMUNU HEATH and UDITHA RATNAYAKE (2009); Water Pollution Issues in Lower Kelani Basin, Proceedings, ‘Symposium on Effective Synergization of Water Resources and Natural Landscape’ 4 -5 April 2009, Postgraduate Institute of Science, University of Peradeniya.
GEMUNU HEATH (2009); Sustainability Issues of the Groundwater Use in the Asian Region, Symposium on Sustainable Infrastructure Development in Asia, 14-15 September 2009, University of Ruhuna, Sri Lanka PP 42-49.
GEMUNU HEATH, UDITHA RATNAYAKE, SHINICHIRO OHGAKI AND YATSUKA KATAOKA (2010); Issues of Groundwater Management in Asia Region, Proceedings of the International Symposium on Coastal Zones and Climate Change: Assessing the Impacts and Developing Adaptation Strategies, 12 – 13 April 2010, Monash University, Australia.
G B B HERATH, G N PARANAVITHANA and C S KALPAGE (2010); Evaluate the Treatment Efficiency of Coir Fibre as an Attached Growth Media for Synthetic Wastewater, Proceedings, annual research sessions 2010, University of Peradeniya, Vol. 15 Part II, pp. 724.
G. M. P. R. WEERAKOON, M. I. M. MOWJOOD, G. B. B. HERATH AND K. B. S. N. JINADASA (2011); “A Comparison of Vertical Sub-surface Flow and Horizontal Sub-surface Flow Constructed Wetland mesocosms in Tropics”, SAITM Research Symposium on Engineering Advancements, 27th – 28th May 2011, Colombo, Sri Lanka, 59 - 63
G.B.B. HERATH and S.M.S.SAMARAKOON (2011); Water Quality Index for Assessment of Water Quality of Mahaoya In Sri Lanka, accepted for publication, Proceedings, International Conference on “Community and Water Services Challenges for Sustainability” 29 Sep – 1 October 2011, Kandy, Sri Lanka.
V. RAVI, G.B.B. HERATH and M. MANOBAVAN (2011); Groundwater Contamination from Unplanned Septic Tanks a Relationship Between Fecal Contamination and Septic Tank Location, accepted for publication, Proceedings, International Conference on “Community and Water Services Challenges for Sustainability” 29 Sep – 1 October 2011, Kandy, Sri Lanka.
W.M.G.C.K. MANNAPERUMA, C.L. ABAYASEKARA, G.B.B. HERATH and D.R.I.B.WERELLAGAMA (2011); Comparison of Sri Lanka Standard Multiple -Tube Fermentation Method with Alternative Bacteriological Methods to Detect Indicator Bacteria in Water, Water Professionals’ Day Symposium – 2011, Faculty of Agriculture, University of Peradeniya, 1 October 2011.
G. M. P. R. WEERAKOON, S. D. PRATHEEP, M. I. M. MOWJOOD, G. B. B. HERATH and K. B. S. N. JINADASA (2011); “Performance of Tropical Constructed Wetlands Subject to Variable Hydraulic Loading Rates”,105th Annual Sessions – IESL, 24th – 25th October 2011, Colombo, Sri Lanka, 256 – 263