Published quarterly in Jan-Mar, April-June, July-Sept & Oct. Dec Vol. XXXX No. IJanuary-March 2008 Editorial- . 3 Wise Water Management Dr. Sanjay Vyankatesh Dahasahasra 5 N. V. Modak Memorial Lecture Wise Water Management for The 21st Century Dr. Sam Godfrey ..- .. 9 V. Raman Endowment Lecture Shri. Sompal..- 13 Design of Rubber Ring Joints for Concrete Pressure Pipes By N.G Joshi :- . 15 Jet Floccu-Clarifiers: Appropriate Technology for Water Treatment in India S.M. Dhabadgaonkar .. 21 Midstream 39, 39A, 40, 40A, 41, 41A, 42, 42A Nitrate and Fluoride Contaminations in Groundwater of Churu Block, Raj as than Kavita Batheja, Dr. A. K. Sinha and Dr. Gita Seth 45 Cost Models/Functions for Water Treatment Mahesh K. Jat, Deepak Khare and P. K. Garg 51 Retention Time Distribution in Flocculation Chambers B. S. Pani, S. G. Joshi, and N. Suresh Kumar 57 Book Reviews ..- 73 Strengthening Tansa Dam : C.D.O Recommendations .. 77 Journalof Indian Water Works Association Published quarterly in Jan-Mar, April-June, _July-Sept & Oct. Dec. Vol. XXXX No. 2 April-June 2008 From President's Desk 83 Post Disaster- Management of Water Supply of Ambernath and Badlapur Cities B.K. Sawai, K. N. Shirase, R. C. Idnani, A. R. Tharkar, R. G. Haval, S. S. Hattargi, R.G. Joshi and P. B. Dalvi. 85 Willingness to Pay and Affordability Survey for Urban Water Supply Schemes Hemant C. Landge, Rajesh Gupta, Yashwanth B. Katpatal 93 Rainfall characteristics and planning for design of storage structures Ranu Rani Sethi, A.Kumar 103 Chemical Water Management and Cost Recovery Issues: Case Studies of Sivas and Fethiye in Turkey Selmin Burak and Hakan Mat 111 Midstream- .. 115 Silt Management in Run-of-the-River Hydroelectric Proj ect - A Case Study Subhash P. Andey and Prakash S. Kelkar .. 131 Activated Sludge Process Treatability Studies on Combined Tannery and Domestic Wastewaters Vassumathy Rajagopalu and S. Kanmani.. 143 Groundwater Arsenic contamination in three blocks of Golaghat District of Assam Mridul Chetia, Saurabh Kr Singh, Kusum Bora, Hiran Kalita, L. B. Saikia, D. C. Goswami, R. B. Srivastaand & H. P. Sarma . 150 Book Reviews.- 155 List of Technical Paper Published in Souvenir of 40th Annual Convention at Indore 7th-8th-9th Feb. 2008 156 Obituary- 159 Content:- Vol. XXXX No. 3-4 July-September 2008 o October-December 2008 From President's Desk. ..- 163 Managing Water Demand in Singapore RamahadSingh- .. 165 Manila Water NRW Reduction Story Abelardo P. Basilio ..- 175 Enabling 24x7 Water Supply-Recent Endeavours Dr S.V. Dahasahasra, K. N. Shirase, U.S. Naik, R.G. Golapkar, R. C. Idnani, R. G. Haval, Magdum, V.N. Bapat, P. Zoad and Mrs. M.V. Patil 183 International Benchmarking of Leakage from Water Reticulation Systems CJ Seago, RS Mckenzie, R Liemberger 189 An Economic Active Leakage Control Policy without a Performance Indicator is not a Myth S. Hamilton- 201 Benchmarking of Losses from Potable Water Reticulation Systems - Results from IWA Task Team R S Mckenzie, C Seago and R Liemberger.. 208 Water Loss Levels from Transmission Mains In Urban Environments Cliff Jones, and Kevin Laven ..- .. 220 Essential Steps to Apply Optimization Modeling Tool for Cost Effective Leakage Detection ZhengYiWu- 227 ALC in Low Pressure Areas-It can Done S Hamilton- .233 Systematic location of leaks in pipe networks Dr. Herbert lann- .. 241 Water Loss Reduction through Pressure Management B.V. Clarke, CIT ..- .. 251 Lekage Reduction Through Pressure Management in Khayelitsha: 2 Years Down the Line R S Mckenzie, H Mostert and T. de Jager. 260 Water Loss Mitigation through Prevention of Extreme Sub-atmospheric Conditions Samit Raval & Srini Lingireddy- 265 Water Supply Management through Pressure and Leakage Reduction- A Case Study Bhupendra (Bup) Mistry, Jeremy Thomas 273 Reduction of Apparent Losses Using the UFR (Unmeasured-Flow Reducer) - Case Studies SharonYaniv ..- ..276 When is a DMA not a DMA? S Hamilton- . 283 District Metered Areas (DMA) - A Concept for Better Leakage Control Dr. S. V. Rao & Dr. KSSVV Prasad. 290 Pressure Management in 24 X 7 Continuous Water Supply Mr.OferCohen- 296 Latur Network Optimisation Dr. Dinos Constantinides..- 299 Network Modelling in the State of Johor, Malaysia Mr Mark Nicol..- 305 VAG Pressure Management Solution Mr Milind Chaware ..- .. 310 Optimal Design of Multi Source Water Transmission System Using Genetic Algorithm Technique UlhasS. Naik & Rajesh Gupta..- . 317 Modelling intermittent water supply system Pe_tr Ingeduld, Ajay Pradhan & Vijay Kumar. 328 Hidden benefits of Public private partnerships: The case of Water Pressure Management in Sebokeng R S Mckenzie ..- .. 335 Operation and Maintenance Cost Model for Implementing Water Supply Services Through Public Private Partnership in Developing Countries Hemant C. Landge Rajesh Gupta, Yashwanth B. Katpatal 344 India's first integrated water management programme K. AshokNatarajan ..- ..355 Midstream. ..- 363