Identification of Major Problems with Urban Water Supply in Selected Areas of Johor Bahru, Malaysia
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Resources and Environment 2013, 3(5A): 23-28 DOI: 10.5923/s.re.201309.04 Identification of Major Problems with Urban Water Supply in Selected Areas of Johor Bahru, Malaysia Nabilah M. I.1, Noor Sharipah S. S.2, Zardari N. H.2,* 1Faculty of Built Environment, Universiti Teknologi Malaysia, 81310, Skudai 2Institute of Environmental and Water Resources (IPASA), Universiti Teknologi Malaysia, Skudai, Johor, Malaysia Abstract In this paper the survey results of 836 households located in three local authorities of Johor Bahru District are presented. A questionnaire consisted of some demographic, water supply, water usage and some opinion questions were administered to a randomly selected respondents based on housing type, settlement type and some socio-economic criteria in face-to-face interviews. The survey data were analyzed using descriptive and inferential statistical techniques. The major focus of the questionnaire were on water usage and water issues such as water quality, interrupted or continuous water supply, response to pipe leakage problems, water pressure in the supply line, and water utility bill payments encountered by the households. The survey results reveal that the quality of domestic water in the surveyed area was realistically good except for few places where some complaints regarding high chlorine contents and silt presence were recorded. Besides that, water pricing was also identified as one of the major issues where some residents complained about current water price that is unaffordable. This paper will be of interest to policy makers, regulators, water company professionals and other researchers for enhancing water management in terms of strategies, policy and programs formulation and initiatives towards technological and infrastructural innovations. Keywords Water Demand Management, Urban Water, Water Resource Planning, Johor Bahru, Survey Questionnaire services planning in many countries of the world particularly 1. Introduction the developed nations. WDM generally refers to the implementation of policies or measures which serve to Water is an important resource in life. During the last control or influence the amount of water used[2]. As stated decade, water management has evolved through a paradigm by[3], he defined WDM as a practical strategy that improves shift. Traditionally, water resource planning started by the equitable, efficient and sustainable use of water which projecting the population to be served, estimating per capita can be achieved through stressing equitable access to water, water use and then simply multiplying the population reflected in a starategy that is specifically designed to projection with the per capita estimation. Since late 1970’s, improve service delivery to the poor, treating water as both the traditional resource supply planning has proven to be an an economic as well as social good and managing and ineffective process for some utilities as it is particularly pricing it accordingly, balancing the management of losses unresponsive to the environmental, financial and political and consumption with new or augmented supplies and constraints of the 1980’s and 1990’s. The large water managing the change from a supply driven to demand construction projects which are often recommended responsive culture. encountered significant public opposition. It also ignores As said by[4], WDM defined as the adaptation and the important contribution to supply that can be obtained implementation of strategies, policies and initiatives by a from comprehensive demand-side management programs water institution to influence water demand and usage of such as water conservation[1]. water in order to meet any of the following objectives : economic efficiency, social development, social equity, 2. Water Demand Management (WDM) environmental protection, sustainability of water supply and Approach services and political acceptability (cited by[5]). WDM actually focuses on managing the water demand Nowadays, WDM has become an integral part of water aspect of consumers. As said by[6], water demand defined as the amount required for a given purpose, measured for * Corresponding author: [email protected] (Zardari N. H.) example, according to the number of litre per person per day, Published online at http://journal.sapub.org/re or mm per crop. The demand can be present or future and it Copyright © 2013 Scientific & Academic Publishing. All Rights Reserved can be actual (related to an available infrastructure) or 24 Nabilah M. I. et al.: Identification of Major Problems with Urban Water Supply in Selected Areas of Johor Bahru, Malaysia potential (assuming full infrastructural development and no population growth. The congress also acknowledged the fact raw water shortage). The serviceble part of the demand is that a better understanding of the relationship between limited both by infrastructure and raw water availability. population dynamics and water resources is the first step According to him, a distinction can be made beween toward designing policies that can make these relationships consumptive demand (for households, industries and more sustainable[8]. agriculture) and non-consumptive demand (for habitat An important water demand sector is that of the residential preservation, fisheries, navigation and salinity control at the sector. Studies undertaken in the United States have proven river mouth). A similar but slightly defferent distinction can that residential water use can be divided into use by be made between instream demand and offstream demand. single-family units versus multi-family units. The two types An important aspect in WDM is water use. The usage (or of units generally showed different patterns of water use, for consumption or utilization) of water is that part of demand both demographic and economic reasons. The major that is actually served at a given time. Many uses generate a economic difference is that the residents of multi-family return flow (for example sewerage or irrigation tailwater). units are usually not metered and billed individually[9]. The return flow can occur at a different time of place than the Another major difference is that there tends to be less withdrawal. The usage of water can be increased by outdoor space per resident in multi-family units and the infrastructural development and reduced demand by maintenance of the landscaping may be controlled by a management[6]. Water consumption on the other hand, also building manager[10]. Demographically, multi-family units refers to water that has been withdrawn and used in a way are often associated with smaller family sizes, although the that prevents its immediate reuse[7]. Demand management opposite may be true in lower income areas where large refers to the intervention on water in order to reduce the households may live in apartment units. Overall, generally consumption of water. It is applied in order to meet water there is lower per capita use in multi-family units. The shortage, shortage of money for infrastructural development residential water use in a normal year area was estimated to or to improve water efficiency[6]. an average of about 150 gallons per capita per day for single WDM is a tool for achieving harmony between demand –family units and 110 gallons per capita per day for for water and the availability of water. There are various multi-family units[11]. tools which can be adopted in WDM and various The role of the demand side in water utility planning is mechanisms applied in managing water usage by consumers. obviously important. Future water needs must be anticipated Domestic consumption for example, can be controlled by and estimated and future utility capacity must be built measures such as installation and charging water fee, accordingly[12]. Although demand forecasting and planning applying different tariffs for different housing areas, have always been intrinsically related, utility planning generation of awareness about prudent use of water and models and methods have evolved in ways that explicitly rationing of water (normally in case of critical shortage only). recognise the value of demand analysis. Modern utility The demand of water for industrial consumption can be planning emphasizes forecasting with greater precision and controlled by measures such as installation of water meters, methodologically sophisticated approaches to reduce or and charging water fee, applying of different tariffs for avoid risks and uncertainties. Modern planning also different users and different seasons, promotion of new embraces the concept of demand management which water efficient technology and rationing of water, normally suggests that water demand is not fixed and unalterable. in case of critical water shortage. As for the agricutural Water demand is malleable and manipulating patterns of sector, measures such as water charging or fee depending on water use can improve the efficient and effective use of water volume of water used, different triffs for different seasons, supply sources[13]. generation of awareness about prudent water usage, promotion of good operation and maintenance, promotion of new water efficient technology and water rationing are some 3. Implementation of Water Demand of the mechanisms applied. Management in Malaysia Population growth and urbanization together with changes The need for a comprehensive Water Demand in production and consumption patterns have placed Management (WDM) approach in Malaysia has been raised unprecendented demand on water resources. As such,