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To review water use in the PCB industry and to introduce approaches for minimising its consumption in order to reduce costs, enhance efficiency and to enable PCB producers to operate in a more sustainable manner.

This paper has been written to provide a review of water consumption in the PCB industry. Opportunities and techniques for reducing water use have been described and the benefits of using less water discussed.

It was found that the purchase costs of water varied significantly between UK PCB manufacturers and that there was a strong business case for improving the efficiency of water use during PCB manufacturing, especially as water consumption can be as high as 1.5 m³ per m² of board processed. The significant cost of water in the manufacturing process was also highlighted and it was also found that the cost of incoming water and outgoing water effluent had increased significantly in recent years.

The value of the paper lies in its ability to provide information on how to reduce water consumption in the PCB manufacturing process through the use of a range of measures. Reducing water consumption helps to minimise costs and to enhance efficiency in a very competitive industry.

Intensive agricultural production in the countries of the Aral Sea Basin has resulted in undesirable ecological and social consequences, including the drying of the Aral Sea. Water has become scarce due to a score of internal and external factors including the growing demand for water resources by the upstream countries, expansion of the irrigated areas to ease food insecurity, and the poor condition of irrigation and drainage networks. To cope with environmental consequences and regional water challenges, it is vital to look for pathways of improved integrated water resource management, higher water use efficiencies, and reducing overall water use.

A combination of value chain and water footprint analyses of the dominant crop, cotton, was applied to assess water use in different sectors of the Uzbekistan economy and to seek water saving and improved water management and efficiency options.

The findings show that reduction in water use could be achieved by diversifying the economy and moving from water intensive agricultural production to less water consuming industrial sectors by introducing water saving irrigation technologies and by raising awareness of the population about the real value of water.

The combined findings of the economic based value chain analysis and ecologically oriented water footprint analysis gave an added value for better informed decision-making to reach land, water, and ecosystem sustainability and to contribute to the Millennium Development Goals of eradicating poverty and hunger and achieving food and water security.

In this chapter the potential to use water-based Trombe walls to provide heated water for building applications during the summer months is investigated. Design Builder software is used to model a simple single-story building with a south-facing Trombe wall. The effects of using different thermal storage mediums within the Trombe wall on building heating loads during the winter and building cooling loads during the summer are modeled. The amount of thermal energy stored and temperature of water within the thermal storage medium during hot weather conditions were also simulated. On a sunny day on Toronto, Canada, the average temperature of the water in a Trombe wall integrated into a single-story building can reach ∼57°C, which is high enough to provide for the main hot water usages in buildings. Furthermore, the amount of water heated is three times greater than that required in an average household in Canada. The results from this work suggest that water-based Trombe walls have great potential to enhance the flexibility and utility of Trombe walls by providing heated water for building applications during summer months, without compromising performance during winter months.

The aim of this chapter is to determine the need for water management and accounting.

This chapter first gives an overview of water-related business risks and exposes the need for sound corporate water management and accounting; it then critically examines water-related issues from an accountability perspective. Furthermore, it gives an overview of Australian Standardised Water Accounting (SWA) and General Purpose Water Accounting (GPWA) as possible practices to strengthen water disclosure.

The present study confirms the need for, and the importance of, transparent, high-quality, credible and comparable water disclosure. Water is considered a public good and involves a public interest and, consequently, public responsibility for its usage, management and protection. Following this line of reasoning, the chapter draws attention to the need for accountability to be ‘public’ or at least shared between crucial stakeholders (government – at national and international levels, water industries, communities, environmentalists, NGOs, etc.).

Company efforts are commonly focused on internal and self-referred operations. The different and conflicting uses that may be made of water, and the fact that water is geographically and temporally sensitive, necessitate a search for more flexible and more extended forms of accountability. An implication of these findings is the need and opportunity to switch focus from a single/private perspective to a more general/public one, with benefits for all the stakeholders.

This research enhances our understanding of water management and accounting and may serve as a sound base for future studies on this challenging topic.

The requirement of full cost recovery for water services including environmental and resource costs in accordance with the polluter pays principle in Art. 9 EU-Water Framework Directive is a unique provision in the history of the European environmental law. The wording of the provision is a compromise between the Council's and the Parliament's versions that mirrors different conceptual ideas on how to internalize environmental and resource costs. Art. 9 now contains a two-step concept for the achievement of the aim. The uniform implementation of the full cost-recovery calls for common accounting standards for the calculation of financial cost and a common methodology for the estimation of environmental and resource costs on the European level. In Germany, the requirements of the first step are partly fulfilled, but necessities of the second step are not being met at the moment.

The demand for potable water increases with population growth, given its role in sustaining life. As part of a wider approach to ensuring sustainable provision, this has prompted a number of carefully formulated water efficiency improvement plans for buildings, one of the highest water-consuming sectors. This paper presents a detailed analysis of water efficiency potential for a multi-storey commercial complex and an office building in central Malaysia.

In this study, a detailed analysis of the water use and efficiency of the water fittings was carried out. Important data such as historical water use and details of water fittings were acquired during a field survey. A series of water flow rate tests were conducted at the selected buildings and each of the water systems was analysed separately, using the criteria of water efficiency stipulated by a locally applied green building tool. A comparison of water consumption before and after the improvement plan was then made.

Findings from the field surveys indicate that only some of the water fittings were certified with recognised efficiency ratings, which suggests a good opportunity for improvement. The proposed replacement of more-efficient fittings could potentially improve the obtainable green credit points by at least 10 from a maximum of 15. A cost–benefit analysis for a water fitting replacement scheme shows that the estimated payback period is less lengthy for the larger commercial building due to the higher potential savings.

Strategies for improvements in water efficiency for existing non-residential buildings are provided in this paper. The same water consumption analysis procedure can be used by maintenance engineers and other practitioners in building assessments where water efficiency and sustainability in building operation are of concern.

This case study responds to the need for efficient use of freshwater and provides insight into the water efficiency opportunities for commercial buildings. The potential cost savings for replacements of inefficient water fittings have been analysed using a green building tool as a guide. This has not been extensively analysed in previous studies.

This paper aims to develop a framework to examine corporate water reporting (CWR) that considers the context in emerging economies and determine if and how companies are addressing the distinct water-related challenges and opportunities that they face in any given location.

This study combines a concise profile of the context of water resources management in Peru with a review of CWR guidelines and thematic content analysis of water information in sustainability reports for 34 companies operating in Peru. These data are then used to inform the development of a CWR typology via the use of a cluster analysis complemented by within-case and cross-case qualitative analysis of companies.

This study highlights the incomplete nature of most CWR practices of companies in Peru, with an emphasis on internal firm operations. Where companies do provide information on water risk and stakeholder engagement, there is insufficient detail to provide a clear picture of contributions to sustainable water management at the local level. The main drivers for CWR in Peru appear to be pressure from international markets, regulation and other normative issues.

The findings indicate that companies need to place more emphasis on the local context when reporting on water risks and activities, which could be achieved through the use of CWR frameworks that integrate both international and sectoral CWR guidelines, along with indicators related to good water governance, water, sanitation and hygiene service delivery and the sustainable development goals, as together they provide a more comprehensive reflection of the broader challenges and opportunities related to corporate water management.

This paper presents the first framework specifically developed to evaluate CWR practices with consideration of the context of an emerging economy.

The purpose of this paper is to investigate an initial set of formative indicators to measure the level of efforts on sustainable use of water by companies from different sectors to eventually generate an index with a ranking of such companies.

The authors started with unstructured data from an open-ended survey conducted by the Carbon Disclosure Project (CDP) on over 300 global companies. Using data from 158 of the companies in that survey from 27 different two-digit UK SIC codes, the authors devised the indicators, translated these into questions requiring response on a seven-point Likert scale, and then coded the companies’ response in the CDP survey for the questionnaire.

First, all the questions were valid in that responses could be provided. Second, in open-ended surveys like CDP's survey, companies provided information only on selected dimensions and not on others. Third, across sectors, companies are putting more effort on usage efficiency relative to where the water comes from or where it goes after use.

The questions still require field-testing for validation and user acceptance.

The proposed questions could become part of a survey for companies to self-assess or to disclose information on the sustainable use of water. An index created using disclosed data would motivate companies to make more effort towards sustainable use of water.

The authors believe this to be the first effort towards formulating a sustainability index of companies’ use of water.

The purpose of this paper is to present a case study on how drinking water consumption could be potentially reduced by the introduction of dual water distribution networks. Since water of this quality is required only for drinking, cooking, bathing, and washing, delivering such water for uses that require non‐drinking water quality represents a tremendous waste of water and energy, and contributes to environmental pollution.

An overview of dual distribution networks in several countries is presented. Kuwait, in which 86 percent of the freshwater network has a parallel brackish water network, is the leader in this field, with brackish water used for a range of outdoor activities. The residential sector is the major consumer of freshwater in Kuwait and the control of demand in this sector will be a key factor in curbing the overall demand, which without any demand management measures is expected to quadruple by 2025. Computer modeling based on existing water use statistics and the proposed phasing‐in of a dual distribution network for indoor use in households has been undertaken to determine how the large quantities of reclaimed can be used to reduce drinking water consumption.

The paper presents a modeling exercise that demonstrates that by using reverse osmosis (RO) treated wastewater for toilet flushing and watering the gardens, water consumption demand can be stabilized at present levels over a 20‐year period.

The paper concludes that with foresight and long‐term planning it is feasible to implement a dual water supply network in a major city, on a scale which may lead to saving up to 25 percent of drinking quality water on top of other traditional water conservation measures.

The aim of this paper is to study and evaluate the situation of different affordable housing projects with an eye toward developing a new affordable and sustainable housing model in the hot-arid climate of Jordan. There is a clear interest in providing affordable housing, yet sustainable and environmental issues are highly marginalized. To bridge this gap, and to meet Jordanian housing needs while tackling environmental problems, this research has analyzed the environmental issues of selected housing projects in Jordan, aiming to determine the existing problems. In addition, it proposes a solution through a sustainable and affordable housing model that was analyzed and compared to the previously studied housing projects.

A cross-sectional design strategy was adopted and a mixed design method was used. Information related to the physical and operation characteristics of buildings was collected through the review of “as built” drawings and other relevant documents. Further information was obtained from field surveys and personal interviews with architects and decision-makers in the housing sector. Energy consumption patterns of these housing projects were analyzed using the DesignBuilder simulation program. Water efficiency was assessed using the BRE Code Water Calculator. Based on the previous analysis, a new housing model was developed that was evaluated in terms of energy and water consumption.

The analysis shows a significant difference among different housing projects in terms of energy cooling and heating loads in different climatic regions in Jordan. Energy analysis proved that the proposed model is energy efficient in different locations and it can save up to 50.4 per cent of annual energy usage in comparison with existing projects. In addition, it can save around 43 per cent of water consumption by using a number of modifications for saving water.

Most of the housing initiatives focus on providing affordable housing, yet sustainable and environmental issues are highly marginalized. This research will bridge the gap by reducing the operation cost of affordable housing through adapting and implementing sustainable measures of design and construction.