• Bindhya Mol K, Jesmi Prakash A K and Harikumar P S. 2014. Impact of Wastewater Discharge on the Water Quality of Two Major Wetlands of Kerala. National Seminar on Lakes, Rivers and Wetlands- A climate change perspective WETCLIMATE-2014, held during March 19-21 at Department of PG studies & Research in Geology, MES College Ponnani, Malappuram, Kerala.
    • Bindhya Mol, K., Dinesan V, P and Harikumar P S., 2014. Assessment of Water Footprint- A Case Study for Kerala Government Secreatariat, Thiruvananthapuram, India. Proceedings of the International Symposium on Integrated Water Resources Management, vol I, pp 534-542. ISBN: 978-81-8424-906-4.
    • Jaseela C., Priyanka M and Harikumar P S., 2014. Assessment of Heavy Metal Contamination of Soil near a Solid Waste Dumping site Using Statistical Analysis and Contamination Factor. Proceedings of the International Symposium on Integrated Water Resources Management, vol I, pp 697-707. ISBN: 978-81-8424-906-4.
    • Jesitha K., Manju P P and Harikumar P S., 2014. A Study on the Endosulfan Persistence in Kasaragod District and its Removal by using Zero Valent Iron Nanoparticles Blended with Phytoremediation. Proceedings of the Envionmental Conference -2014, February 17-19, Department of Environmental Science , Central University of Kerala, Padannakkad, Kasaragod, Kerala.
    • Jesitha K., Manjusha CM and Harikumar P S., 2014. Bioremediation of Organochlorine Pesticide Residues using Bacterial Species Isolated from soil. Proceedings of the International Symposium on Integrated Water Resources Management, vol II, pp 908-915. ISBN: 978-81-8424-907-1.
    • Madhavan Komath(2014).Drinking Water Quality Assurance through Water Card. Proceedings of the International Seminar on Integrated Water Resources Management 19 February, 2014 ,Calicut.
    • Madhavan Komath(2014).Ecological Restoration of Mampuzha River. Proceedings of the 24th Swadeshi Science Congress held at Malayalam University 07-09, November, 2014 Tirur.
    • Madhavan Komath., Litty Joseph and Harikumar P S., 2014. Drinking Water Quality Assurance through Water Card. Proceedings of the International Symposium on Integrated Water Resources Management, vol I, pp 460-468. ISBN: 978-81-8424-906-4.
    • Megha T and Harikumar P S., 2014. Electrically enhanced Phytoremediation of heavy metals. Proceedings of the International Symposium on Integrated Water Resources Management, vol I, pp 334-344. ISBN: 978-81-8424-906-4.
    • Shiji. M, Shilna.E.P, Soumya.P, Kavya Prabhakar and Harikumar. P. S., 2014.Nutrient Dynamics of Kavvayi Wetland System: an Integrated Geochemical and GIS Approach. National Seminar on Lakes, Rivers and Wetlands- A climate change perspective WETCLIMATE-2014, held during March 19-21 at Department of PG studies & Research in Geology, MES College Ponnani, Malappuram, Kerala.
    • Shiji.M., Soumya P., Bindhya Mol, K and Harikumar P S., 2014. Soil and Groundwater Quality Assessment of Selected Islands of Kavvayi Wetland System, India. Proceedings of the International Symposium on Integrated Water Resources Management, vol I, pp 582-590. ISBN: 978-81-8424-906-4.
    • Bindhya mol,K and Harikumar, P.S (2013). Tidal influence of pollutants on Canoli Canal beside Kottuli wetland in Kozhikode city. Proceedings of the 23rd Swadeshi Science Congress.
    • Jesitha,K and Harikumar, P.S (2013). Application of Nano Zero Valent Iron Enhanced Phytoremediation Technique for the Removal of Endosulfan .Proceedings of the 23rd Swadeshi Science Congress.
    • Megha P U, Harikumar, P.S and S Murugan (2013). Isolation and identification of bacteria from Canoli canal and the surrounding wells of Kozhikode, Kerala. Proceedings of the 3rd International Science Congress (ISCA-ISC-2013-8EVS-74).
    • Jacob, Noble, T. B. Joseph, and P. S. Hari Kumar. "Assessment of sedimentation rate and hydrodynamics of Vembanad lagoon, Southern India, using isotope techniques." Proceedings of third international conference on sediment management: focus on analytical methodologies and its implication on environment. 2012.
    • Jesitha K, Sreechithra M and Harikumar P S, Endosulphan remediation using aquatic and terrestrial plant species, National Symposium on innovative Approaches and Modern Technologies for Crop Productivity, Food Safety and Environmental Sustainability, November 2012, Thrissur, Kerala
    • Megha T and Harikumar P S Immobilisation and mobilization effect of ammonium molybdate on phytoremediation of toxic heavy metals in soil National Symposium on innovative Approaches and Modern Technologies for Crop Productivity, Food Safety and Environmental Sustainability, November 2012, Thrissur, Kerala
    • Subhankar Karmakar and Harikumar P S Evaluation of water quality monitoring network: a multivariate statistical approach to Kabbini river catchment (India) IWA World Water Congress and Exhibition 2012 Korea
    • Harikumar P S Water Quality Management of India-Issues and Challenges, Proc.of National Conference on Environmental Pollution, Coimbatore, March 31,2010 (key note paper)
    • Harikumar P S Liquid Waste Management-Sectoral Inventory State Level Workshop on National Urban Sanitation Policy, WSP, LSG (GOK), Ministry of Urban Development, GOI, Thrissur, 23 Nov 2009 (key note paper)
    • Harikumar P S Water Quality Status of Kerala with Special Reference to Drinking Water Proc.of Kerala Environment Congress 2009, 19-21 August Thiruvanthapuram (invited paper),
    • Jisha T.S, Prajitha K and Harikumar P.S, Study of Seawater Intrusion in the Groundwater of Kadalundi River Basin Proc.of the National Seminar on Current Advances in Chemical Sciences, Kannur, Aug 21-22, 2009.
    • Litty Joseph, Madhavan Komath and P.S Harikumar(2009) Water quality assessment of groundwater sources of Kunnamangalam Grama Panchayat, Calicut, Kerala. Proceedings of 19th Swadeshi Science Congress held at Kerala Agricultural University, Thrissur during 10-12 December,2009
    • Moly A and Harikumar P S Water and Sediment Quality Assessment of Selected Reservoirs of Bharathapuzha River Basin, Proc.of the National Seminar on Current Advances in Chemical Sciences, Kannur, Aug 21-22,2009
    • Nasir U P and Harikumar P S Monitoring of heavy metal toxicity and its distribution by ecological risk assessment method and with isotopes - A case study of Cochin estuary Proc. XXI Kerala Science Congress, Kollam.2009
    • Resmi.P, Preethi.T. K and Harikumar P.S , Development of a Water Quality Index appropriate to tropical countries 21 st Kerala Science congress , 2009, Kollam
    • Harikumar P S, Nasir U P and Madhavan K, Environmental Assessment of Vembanad Lake in the Southwest Coast of India12th International Conference on Integrated Diffuse Pollution Management (IWA DIPCON 2008). Research Center for Environmental and Hazardous Substance Management (EHSM), Khon Kaen University, Thailand ; 25-29 August 2008.
    • Jisha T S, Prajitha K and Harikumar P S, Water Quality assessment of Kadalundi-Tirur Basin, 18th Swadeshi Science Congress, RGCB, 2008,Thiruvanthapuram
    • Molin S, Cvetkovic V,. Stenström T. A. Trönnberg L and Harikumar P. S. Quantitative Microbial Risk Assessment of Shallow Water Supply Wells from On-Site Sanitation Meeting global challenges in research cooperation Proceedings of a conference and workshop in Uppsala, May 27–29, 2008 294
    • Mujeebu Rahman, Sumesh,K and Harikumar P S, Characterisation of leachate from two municipal solid waste landfill sites of Kerala, Indian Analytical Science Congress 2008,Munnar.
    • Nasir .U .P and Harikumar .P .S Geochemistry of Core Sediments and Study of Sedimentation Rate of Vembanad Lake Proc. XX Kerala Science Congress, Thiruvananthapuram 2008
    • Sheena P S, Nasir .U .P, Mujeebu Rahman M P and Harikumar P S, Removal of Lead by Phytoremediation techniques Using Amaranthus Spinosus and Ludergia Peruviana, Indian Analytical Science Congress Nov. 21-22, 2008, Munnar
    • Harikumar P S and Maheesan P M (2007). Performance of a Constructed Wetland for Domestic Wastewater Treatment, Symposium on Biological Methods of Waste Treatment and Management In South India, February 15th 2007, Chennai.