Basic Design Study Report on the Project for Groundwater Development for Rural Water Supply in Zambezia Province in the Republic of Mazambique
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NATIONAL DIRECTRATE OF WATER No. REPUBLIC OF MOZAMBIQUE BASIC DESIGN STUDY REPORT ON THE PROJECT FOR GROUNDWATER DEVELOPMENT FOR RURAL WATER SUPPLY IN ZAMBEZIA PROVINCE IN THE REPUBLIC OF MAZAMBIQUE MARCH 2001 JAPAN INTERNATIONAL COOPERATION AGENCY PACIFIC CONSULTANTS INTERNATIONAL G R 1 CR(3) 01-070 PREFACE In response to a request from the Government of Republic of Mozambique (GOM), the Government of Japan decided to conduct a basic design study on the Project for Groundwater Development for Rural Water Supply in Zambezia Province and entrusted the study to the Japan International Cooperation Agency (JICA). JICA sent to Mozambique a study team from October 22 to December 10, 2000. The team held discussions with the officials concerned of GOM, and conducted a field study at the study area. After the team returned to Japan, further studies were made. Then, a mission was sent to Mozambique in order to discuss a draft basic design, and as this result, the present report was finalized. I hope that this report will contribute to the promotion of the project and to the enhancement of friendly relations between our two countries. I wish to express my sincere appreciation to the officials concerned of GOM for their close cooperation extended to the teams. March 2001 Kunihiko Saito President Japan International Cooperation Agency - i - March 2001 LETTER OF TRANSMITTAL We are pleased to submit to you the basic design study report on the Project for Groundwater Development for Rural Water Supply in Zambezia Province in Republic of Mozambique. This study was conducted by Pacific Consultants International, under a contract to JICA, during the period from October 16, 2000 to March 30, 2001. In conducting the study, we have examined the feasibility and rationale of the project with due consideration to the present situation of Mozambique and formulated the most appropriate basic design for the project under Japan’s grant aid scheme. Finally, we hope that this report will contribute to further promotion of the project. Very truly yours, Soichiro Yumoto Project Manager, Basic Design Study Team on the Project for Groundwater Development for Rural Water Supply in Zambezia Province Pacific Consultants International - ii - BASIC DESIGN STUDY REPORT ON THE PROJECT FOR GROUNDWATER DEVELOPMENT FOR RURAL WATER SUPPLY IN ZAMBEZIA PROVINCE IN REPUBLIC OF MOZAMBIQUE Preface Letter of Transmittal Project Location Map Table of Contents Page Chapter 1 Background of the Project ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1 - 1 Chapter 2 Contents of the Project ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 1 2.1 Objectives of the Project ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 1 2.2 Basic Concept of the Project ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 1 2.3 Basic Design ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 8 2.3.1 Design Concept ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 8 2.3.2 Basic Design ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 10 Chapter 3 Implementation Plan ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 1 3.1 Implementation Plan ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 1 3.1.1 Implementation Concept ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 1 3.1.2 Implementation Conditions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 2 3.1.3 Scope of Works ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 3 3.1.4 Implementation of Technical Assistance ・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 3 3.1.5 Consultant Supervision ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 6 3.1.6 Procurement Plan ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 6 3.1.7 Implementation Schedule ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 7 3.1.8 Undertakings of the Government of Mozambique ・・・・・・・・・・・・・・・・・ 3 - 9 3.2 Project Cost Borne by the Government of Mozambique ・・・・・・・・・・・・・・・・・・・ 3 - 9 3.3 Operation and Maintenance Program ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 10 Chapter 4 Project Evaluation and Recommendation ・・・・・・・・・・・・・・・・・・・・・・・・・・ 4 - 1 4.1 Project Effect ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4 - 1 4.2 Recommendation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4 - 2 - iv - List of Figures Page Fig. 2.1 Location Map of Villages for Tubewell Construction ・・・・・・・・・・・・・・・・ 2 - 25 Fig. 2.2 Categorized Area by Depth to Basement Rock ・・・・・・・・・・・・・・・・・・・・・ 2 - 26 Fig. 3.1 Implementation Schedule ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3 - 18 List of Tables Page Table 2.1 Well Construction Plan for Rural Water Supply of Each District in Zambezia Province ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2 - 18 Table 2.2 Evaluation and Selection of Villages for Tubewell Construction ・・・・・・・ 2 - 19 Table 2.3 Confirmed Well for Replacement of Handpump ・・・・・・・・・・・・・・・・・・・・ 2 - 22 Table 2.4 List of Equipment and Materials to be Procured ・・・・・・・・・・・・・・・・・・・・ 2 - 23 Appendices Appendix 1 Member List of the Study Team Appendix 2 Itinerary of Study Team Appendix 3 List of Officials Concerned Appendix 4 Minutes of Discussions and Technical Notes Appendix 5 Basic Design Drawings Appendix 6 Results of Socio-economic Survey Appendix 7 Results of Geophysical Survey Appendix 8 Results of Water Quality Analyses Appendix 9 References - v - Abbreviations MFAC: Ministry of Foreign Affairs and Cooperation MOPH: Ministério das Obras Públicas e Habitação DNA: Direcção Nacional de Águas DAR: Departamento de Água Rural DGRH: Departamento de Geografic e Recursos Hídricos DPOPH: Direcçáo Provincial das Obras Públicas e Habitação DAS: Departamento de Água e Saneamento EPAR: Estaleiros Provinciais de Água Rural PEC: Participação e Educação Comunitaria UNICEF: United Nations International Children’s Emergency Fund CFPAS: Centro de Formação Profissional de Águas e Saneamento VLOM: Village Level Operation and Maintenance DTH: Down the Hole OJT: On the Job Training PVC: Polyvinyl Chloride JIS: Japan Industrial Standard BS: British Standard - vi - CHAPTER 1 BACKGROUND OF THE PROJECT CHAPTER 1 BACKGROUND OF THE PROJECT The Republic of Mozambique is situated in the south-eastern part of the African continent, of which land area is measured to be 799,380 km2. The country’s population is estimated as 15.7 million in 1997. The Zambezia province located at the south end of the north hilly area extending north of the Zambezi river, the largest international river in the country. The northern part of the province is generally hilly, while the southern low laying alluvial land along the coast is flat. The Project area of the northern eight (8) districts of the province extends 300 km from east to west and 180 km from north to south, and its area is measured to be about 54,600 km2. The altitude of the Project area varies from 200 to 300 m in the southern hilly area but in the northern areas it exceeds 600 m. The economic reform of Mozambique has been implemented with a support from IMF in 1987, and based on the Economic Reform Program (ERP) various reformation measures such as deregulation, privatization of government companies, cutback in foreign debt and financial deficit, abolish of subsidy, etc. have been carried out realizing a shift to floating exchange rate system and economic liberalization. Since 1998, the reform of each sector has been implemented in accordance with the sector programs. As for the water supply sector, the reformation is carried out in accordance with the National Water Policy (NWP) established in 1995. The rural water supply sector is considered to be the most important issue in the program, since the population who has an access to safe water is estimated as low as about 30 %. The water supply situation of the rural areas in the Zambezia province is considered poor, and the service rate in the Zambezia province is about 14 % quite low comparing with the average value of the whole country. In the five year plan from 2000 to 2004, such low service rate is aimed to be improved to 30 %, the average of the whole country. Especially in the northern eight districts such as Gurue, Alto Morocue, Namarroi, Ile, Milange, Gile, Mocuba and Lugela, many wells were damaged and abandoned during the civil war, and the people in the province take their domestic water from springs and streams that run around their houses. According to the database of the Ministry of Health, peoples as many as 59,000 and 9,600 suffer from diarrhea and dysentery in 2000, respectively, and the improvement of water supply situation is considered as one of the urgent issues from the viewpoints of hygiene and sanitation. Under these situations, the Government of Mozambique selected the northern eight (8) districts of which water supply situation is considered poor in the province, and requested to the Government of Japan i) to construct 150 tubewells and ii) to replace handpump units of the existing 30 wells in the these districts as well as iii) to provide equipment and materials necessary for these construction in order to improve the water supply situation in the area. This report presents the results of the basic design study carried out for the requested construction and rehabilitation of tubewells and procurement of necessary equipment and materials. 1 - 1 CHAPTER 2 CONTENTS OF THE PROJECT CHAPTER 2 CONTENTS OF THE PROJECT 2.1 Objectives of the Project The Main Objective of the Project for Groundwater Development for Rural Water Supply in Zambezia Province in the Republic of Mozambique (hereinafter referred to as the Project) is to improve the water supply situation as mentioned below; - Improvement of the water supply service ratio from 14% to 16% and life environment in the northern part