Luphephe Nwanedzi Main Regional Water Scheme
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CONTRACT WP 9711 DEVELOPMENT OF A RECONCILIATION STRATEGY FOR ALL TOWNS IN THE NORTHERN REGION VHEMBE DISTRICT MUNICIPALITY MUTALE LOCAL MUNICIPALITY FIRST ORDER RECONCILIATION STRATEGY FOR LUPHEPHE NWANEDZI MAIN REGIONAL WATER SCHEME Including the settlements of Folovhodwe, Tshamuya, Tshikotoni, Gumela, Tshitanzhe, Musunda, Muswodi, Shakadza, Vandewe, Tshipale, Tshivhongweni, Zwigodini, Mpumbuluni, Dambale, Tshipise, Mbodi A, Matatani, Tshirunzini, Thahari and Tshokotshoko DRAFT VERSION 1.3 DECEMBER 2011 Prepared by: Prepared for: SRK Consulting Department of Water Affairs PO Box 55291 Directorate: National Water Resource Planning NORTHLANDS Private Bag X313 2116 PRETORIA, Tel: +27 (0) 11 441 1111 0001 E-mail: [email protected] [email protected] RECONCILIATION STRATEGY: LUPHEPHE NWANEDZI MAIN RWS REPORT NO. {1} DEVELOPMENT OF A RECONCILIATION STRATEGY FOR ALL TOWNS IN THE NORTHERN REGION FIRST ORDER RECONCILIATION STRATEGY FOR THE LUPHEPHE NWANEDZI MAIN REGIONAL WATER SCHEME EXECUTIVE SUMMARY The strategy objectives and methodology are presented in a separate report titled “Methodology followed for the Development of Reconciliation Strategies for the All Town Study Northern Region ” and must be read in conjunction with this document. Location and Background Information This document focuses on the rural settlements of Folovhodwe, Tshamuya, Tshikotoni, Gumela, Tshitanzhe, Musunda, Muswodi, Shakadza, Vandewe, Tshipale, Tshivhongweni, Zwigodini, Mpumbuluni, Dambale, Tshipise, Mbodi A, Matatani, Tshirunzini, Thahari and Tshokotshoko. This cluster of settlements is supplied with water from the Luphephe Nwanedzi Main Regional Water Scheme (RWS) and sources water from groundwater. This scheme is located in the A92B and A92C quaternary catchments of the Luvuvhu/Letaba Water Management Area (WMA) and the A80J and A80H quaternary catchments of the Limpopo WMA. Agriculture is the main economic activity within the municipality, although no special development framework has been put in place. Demographics, water requirements and availability The population of Luphephe Nwanedzi Main RWS was estimated for 2007 at 18 924 people. This is projected to increase to between 22 403 for a low growth scenario and 24 633 given high growth, by 2030. Water Services data indicates a medium level of water supply, with a large portion (62%) of the population being serviced at or above the RDP level. Water provided by the scheme is currently sourced from the local aquifer, although no registered allocations are noted. Groundwater abstractions are not metered or reported, therefore actual use is not know. A rough calculation based on the number of equipped boreholes (motorised pumps running 24 hours and hand pumps running for 12 hours) and the average borehole yields, it is calculated that the abstraction volume is around 1.655 Million m 3/a. There are no details on the distinction between domestic and agricultural use, but it is assumed that at minimum 1.300 Million m 3/a of this water is utilised for domestic purposes. This volume is sufficient for the current and future domestic demands of the scheme. With the expected growth in population, the requirement are anticipated to increase from the 2010 demand of 0.773 to between 1.096 and 1.205 Million m 3/a by the year 2030. The groundwater quality is noted to be poor, between Class 2 and Class 3, with isolated cases of elevated chloride nitrate and manganese resulting in Class 4 water. Precautions need to be put in place to ensure that the groundwater quality does not deteriorate further. X:\G\Proj 1\Proj\390778_DWAF North\7REPORTS\Strategies\All Strategies_19Dec2011\Limpopo\Vhembe DM\Mutale LM\Luphephe Nwanedzi Main RWS .docx December 2011 i RECONCILIATION STRAT EGY: LUPHEPHE NWANEDZI MA IN RWS REPORT NO. {1} Water treatment is currently taking place at Gumela, but no details are available on this plant [11]. The number settlements serviced and capacity of the plant needs to be confirmed to ensure it is sufficient to cater for the future treatment water demands of the scheme. Strategy/Recommendations • Confirm th e quality of the groundwater as well as the supply area and capacity of the Gumela WTW to ensure sufficient water treatment is available. • Conduct an in-depth hydrogeological assessment of the groundwater to confirm the available resources, water users (do mestic and agricultural) and water quality. • Develop and implement a Water Conservation and Water Demand Management strategy to ensure the effective use of water resources. • Register existing water use and ensure that planned increases in water use are reg istered with the DWA. • Ensure measures are put in place to mitigate and minimise the potential for groundwater pollution. This includes providing adequate sanitation services to the settlements. Although the water quantity is sufficient, the quality is poor and the capacity of the Gumela WTW needs to be confirmed. Current and Future Water Requirements Confidence level of information available for the study area The confidence level for the info rmation in this area is low as groundwater supply is not metered. The level of confidence for the population estimates is regarded as medium . X:\G\Proj 1\Proj\390778_DWAF North \7REPORTS\Strategies\All Strat egies_19Dec2011 \Limpopo\Vhembe DM\Mutale LM\Luphephe Nwanedzi Main RWS .docx December 2011 ii RECONCILIATION STRATEGY: LUPHEPHE NWANEDZI MAIN RWS REPORT NO. {1} The level of data supporting this strategy can be improved through a detailed hydrological investigation into the actual water users (domestic and agricultural) and water supply boreholes. Priority rating for the development of a detailed reconciliation strategy: With regards to availability of water resources, the Luphephe Nwanedzi Main RWS is considered to have a Priority 1 (low) rating for the development of a detailed reconciliation strategy as the cluster is seen to have sufficient water to cater for its current and future needs. This is a strategy for the Luphephe Nwanedzi Main RWS and it has been accepted and signed by Vhembe District Municipality, Mutale Local Municipality, DWA North Regional Office and the DWA Head Office (D: NWRP) as follows: Scheme WMA DM WSA Luphephe Nwanedzi Luvuvhu/Letaba Vhembe District Vhembe District Main RWS and Limpopo Municipality Municipality Names:……………………………………………… Names:……………………………………………… Signature:…………………………………………… Signature:………………………………….…..…… Date:………………………………………………… Date:……………………………………….………… Position:………………………………………........ Position:………………………………………........ Mutale Local Municipality Vhembe District Municipality Names:……………………………………………… Names:……………………………………………… Signature:…………………………………………… Signature:……………………………………..…… Date:………………………………………………… Date:…………………………………..…..………… Position:………………………………………........ Position:…………………………………….…........ DWA: Regional Office DWA D: National Water Resource Planning X:\G\Proj 1\Proj\390778_DWAF North\7REPORTS\Strategies\All Strategies_19Dec2011\Limpopo\Vhembe DM\Mutale LM\Luphephe Nwanedzi Main RWS .docx December 2011 iii RECONCILIATION STRATEGY: LUPHEPHE NWANEDZI MAIN RWS REPORT NO. {1} TABLE OF CONTENTS 1 INTRODUCTION ......................................................................................................... 1 1.1 Study area ................................................................................................................. 1 1.2 Regional Setting ....................................................................................................... 1 1.3 Economic Drivers ..................................................................................................... 3 1.4 Confidence Level of Information Available for the Study Area ............................. 3 2 POPULATION AND DEMOGRAPHICS ...................................................................... 3 3 CURRENT WATER REQUIREMENTS ....................................................................... 3 3.1 Present water requirements and historical water use ........................................... 3 3.2 Level of services ...................................................................................................... 4 4 WATER REQUIREMENTS PROJECTIONS TILL 2030 .............................................. 4 4.1 Future water requirements ...................................................................................... 4 5 WATER RESOURCES ............................................................................................... 5 5.1 Surface water resources .......................................................................................... 5 5.1.1 Water allocation/s .............................................................................................. 5 5.1.2 Other water users from the same source ......................................................... 6 5.1.3 Quality ................................................................................................................. 6 5.2 Groundwater ............................................................................................................. 6 5.2.1 Water allocation/s .............................................................................................. 6 5.2.2 Other water users from the same source ......................................................... 6 5.2.3 Quality ................................................................................................................. 6 5.3 Water Re-use ...........................................................................................................