A comparative study of water usage in metered and unmetered households

The purpose of this research was to investigate the water usage in metered and unmetered households. The work also examined consumer attitudes towards water usage, including the belief of the need to use water more efficiently and the motivation to do so. Data were obtained by a self-administered questionnaire from 89 households in the Trafford area of Greater Manchester in the winter of 1995/6. This has provided information on ownership levels and age of water-using domestic appliances and outdoor water-using equipment. Although the survey showed some consumer awareness of eco-labelling, actual knowledge was low in both metered and unmetered households. Those respondents who thought water metering did, or would, encourage greater water efficiency were generally aware of how savings could be achieved. Metered households showed a stronger belief in the benefits of water economy. Twenty households each monitored their water usage for 7 consecutive days. A second questionnaire, aimed at clarifying practices, was then completed. This has provided information on total domestic water usage and variations in the components of water demand. Although there was a wide range of values in both metered and unmetered households, the frequency of use of appliances and equipment and per capita consumption were found to be related to household size. This showed larger households benefiting from an economy of scale. Metered households in this survey had a mean water consumption of 124·19 L/person/day compared with 137·28 L/person/day in unmetered households.     

Comparative analysis of global consumer behaviour in the context of different manual dishwashing methods

This laboratory study presents an overview of the global manual dishwashing behaviour. The focus of the investigation was to analyse individual attitudes towards manual dishwashing and to determine the amount of water and energy used, as well as the cleaning performance achieved. Additionally, manual dishwashing was compared with automatic dishwashers. Two hundred eighty-nine participants from 29 countries took part in this investigation. Each consumer had to wash up a complete soiled dishwasher load consisting of 12 place settings based on both international and local performance test standards for automatic dishwashers. Country-specific aspects such as tableware, food residues or washing up equipment were considered. In order to analyse individual consumer's behaviour, each participant was recorded on video and had to fill out a questionnaire. The resource consumption for washing up dishes was measured during the tests. At the end of each trial, the cleaning result of the washed up tableware was assessed. To compare manual with automatic dishwashing, country-specific dishwasher models were tested in parallel with three different programmes with the same soiled dish samples. The study provides comprehensive data about the average resource consumption for manual dishwashing for a specific load for each country. The average water consumption per country reached 34.7 l up to 160.1 l, and individual values ranged from 18.3 l to 472.8 l. The lowest used average heat quantity accounted for 0.9 kWh per country, while the highest amount was five times higher. The cleaning results did not differ much between the countries: the average test results were between 2.2 and 2.8 on a scale between 0 and 5. The automatic dishwasher tests showed differences between both the machines and the programmes. All machines achieved lower water consumption values than the average consumers with about 9.6 l to 26.7 l of water on average. The energy consumption ranged from 0.5 kWh on average up to 2.0 kWh. The cleaning results of the dishwasher tests varied highly ranging from 1.1 in a quick programme to 4.4 in an intensive programme. The study comes to the conclusion that automatic dishwashing is more superior as compared with manual dishwashing in terms of performance and resource consumption under the tested conditions. Furthermore, it points out that washing up dishes under running tap water is the most water-consuming manual dishwashing method of all investigated ones. A high lack of knowledge about the benefits of automatic dishwashing compared with manual dishwashing can still be identified among consumers.     

Automatic dishwashers: efficient machines or less efficient consumer habits?

Increasing costs for energy and water influence consumer decision making when purchasing white goods, such as dishwashers. Since the implementation of the European Energy Label, considerable improvements in water and energy consumption of dishwashers has been achieved, and for consumers, efficiency has become one of the main buzzwords when buying any major new household appliance. However, ownership of an efficient dishwasher in itself does not guarantee savings in energy and water during the course of the dishwashing process. Conservation of resources also requires changes in consumer behaviour. This paper provides empirical data on consumers' dishwashing habits in everyday life in four European countries, deals with the influence of their behaviour on the efficiency of the dishwashing process and highlights savings potentials in the usage of dishwashers. It reports on the results of a survey involving a total of 1209 online interviews conducted in winter 2006/2007. The survey data have been analysed to reveal the importance of various product attributes for consumers and show that low water and energy consumption values are the most important consideration for the respondents in terms of their purchasing decision. But this is compromised, at least in part, by less efficient dishwasher use, e.g. in pre‐rinsing dishes before placing them into the dishwasher and in the programme choice. In addition, differences in manual dishwashing practices between households with and without a dishwasher, as well as between countries, will be shown. Finally, conclusions are drawn for greater sustainability in the dishwashing process.     

Application of Best Practice Tips in manual dishwashing in Germany and Spain

Investigations on the consumer behaviour of manual dishwashing have shown that there is a large variety of ways of how to wash up by hand, and the corresponding resource consumption is affected accordingly. In order to reduce resource consumption in manual dishwashing while achieving an acceptably good cleaning result, Best Practice Tips have been established (published in Fuss et al.) on the basis of laboratory experiments and the knowledge of everyday behaviour. This study is aimed at verifying the potential to save resources in real life when consumers are applying Best Practice Tips for manual dishwashing. A 4‐week in‐house study was run in two European countries, and data of the manual dishwashing behaviour were acquired before and after training on the Best Practice Tips. The results of both periods were compared with each other and between the countries. The test participants in Germany needed approximately 30% less water and 40% less energy, on average, in the period in which they applied the Best Practice Tips; in Spain, nearly 50% less water and 60% less energy for dishwashing in the period after the training. It has to be taken into consideration, however, that individual savings are very different due to specific living conditions, household sizes, practices in dishwashing and more or less prejudice against the Best Practice Tips.     

Consumer laundry practices in Germany

Sustainability is a guiding principle for a responsible, future‐oriented 21st century lifestyle and this already begins in private households with the daily household tasks. Approximately 25% of an average household's electricity consumption is required to do the laundry and dishwashing – 5% alone is for washing clothes with a corresponding energy consumption of 6 billion kilowatt hours. In addition, 600 000 tonnes of detergent and 330 million cubic metres of water are used for textile care in Germany. These figures provide the rationale for the scientific study of current practices of using washing machines and for a resulting estimate of the latent energy‐saving potential in German households. In the context of the in‐home study presented here, 236 private households throughout Germany were studied with respect to their washing practices and existing knowledge about topics on the sustainable, energy‐saving use of their washing machines. Overall, across all households 2867 wash cycles were individually recorded and subsequently analysed over a 4‐week period. The results of this study show that washing machines tend to be underloaded, and therefore maximum loading of the machines could lead to a reduction of wash cycles per household. With respect to detergent dosage, it was determined that the consumer does not adjust the dosage to the textile type, load size, soil level and/or water hardness, and this can lead to under‐ or overdosing depending on prevailing conditions. Finally, the selection of the wash temperature showed a 90°C/95°C programme was only chosen in 2.3% of all recorded wash cycles, however, every fourth cycle was completed at 60°C. Therefore, adjusting the load size and detergent dosage as well as selecting the right wash temperature are key themes to be taken into account in future consumer communication about energy‐saving households.     

Do consumers act in a sustainable way using their refrigerator? The influence of consumer real life behaviour on the energy consumption of cooling appliances

Over recent decades, energy savings and resource conservation have become increasingly important issues for debate, and this includes the residential sector. Since the introduction of the European Energy Label, the energy consumption of appliances has decreased drastically. Additionally, a number of guidelines have been published to assist the consumer in adopting more energy‐saving behaviours. Refrigerators and freezers in particular are covered by these recommendations because they are large energy consumers in domestic households. In order to understand the influence of consumers' real life circumstances and their behaviour in relation to the energy consumption of refrigerators, a web‐based survey was carried out. A total of 1011 participants in four European countries completed a questionnaire to allow the researchers to gain information about refrigerator characteristics and consumer behaviour in relation to refrigerator use. As well as demographic and socio‐economic characteristics of the participants, data were collected on refrigerator configuration and specification, ambient conditions (ambient temperature, position near any heat sources), and consumer behaviours such as shopping frequency, loading of the refrigerator, door opening and food consumption. The study has shown that recommendations on energy efficient usage are not always observed. A major finding of the present study is that for 25% of refrigerators, correct operation is not ensured as these appliances are operated outside the temperature ranges specified according to their climatic classes. This suggests a lack of consumer information on this topic. Consequently, guidelines and recommendations will have to be revised and their dissemination to be improved in order to ensure the sustainable and safe use of domestic refrigerators.     

Sociodemographic and spatial disaggregation of e-commerce channel use in the grocery market in Great Britain

The UK Grocery e-commerce industry is amongst the most developed in the world with an estimated value of £11.4Billion in 2018. Assisted by technological developments, the market has experienced dramatic growth over the past two decades. Grocery retailers have invested in online infrastructure and home delivery networks. As a result, consumers have a range of options which enable them to shop interchangeably between in-store and online channels. The proliferation of new grocery shopping channels such as home delivery or ‘click and collect’ (collect in store or collection from a non-store collection point), coupled with changing consumer behaviour, provides new challenges for retailers in understanding consumer dynamics in this market. This paper explores consumer behaviour and preferences for e-commerce in the grocery retail industry in Great Britain (GB) using a survey of 19,033 respondents from the major market research company YouGov. Respondents were asked a range of questions around uptake and channel usage in the grocery e-commerce sector. The survey presents a novel opportunity to analyse self-reported consumer behaviour in GB, with survey responses attached to key sociodemographic and locational information. We find that sociodemographics are an important driver of groceries e-commerce usage and channel choice, with females, more affluent households and those in the 25–44 age group most likely to use home delivery, corroborating previous research. Contrasting previous research, we also find statistically significant evidence of relatively high values of home delivery use among over-55s. Whilst overall usage is lower, we find a particular affinity to collection facilities among males and skilled manual workers. Spatially, we find evidence of both the innovation-diffusion theory and the efficiency theory at both a national and local authority district level, using a brief case study of Yorkshire and the Humber. These insights can support grocery retailers as they further develop costly localised infrastructure to support e-commerce. It could also assist retailers in understanding the localised drivers of channel choice as they seek to shift demand from home delivery (with high costs faced by the retailer in relation to the ‘last mile’) to click and collect (in which the customer faces the costs associated with the last mile).     

Dishwasher-related injuries: survey and literature review

Domestic injuries are quite common among children aged 0–4 years old. Hazards lurking in the kitchen area can cause serious injuries in children. Through this study, we aim to raise public awareness of the potential and underreported risk of injuries related to dishwashers. Anonymous questionnaires consisting of 12 questions were distributed to adult females with children under 5 years old, including nurses, secretarial staff and outpatients. Commonly used dishwashers were surveyed by visiting high-street stores, and each brand's user manual was studied. A literature search using Medline and Pubmed was conducted for examining reported dishwasher-related sharp injuries. Forty households filled out survey questionnaires. Their responses indicated that 10% and 12.5% of children participate in unloading or loading dishwashers, respectively. Results showed that the incidence of related injuries was 12.5% among adults and 5% among children, and young children are at risk of sharp injuries in households with dishwashers. The dangerous loading and unloading of sharp objects and the direct involvement of toddlers should be discouraged, with the help of manufacturers.     

Why households buy bottled water: a survey of household perceptions in the Philippines

This study investigates the determinants of household buying decisions to purchase bottled water or purified water from refilling stations among households in Metro Cebu, Philippines. A survey of 360 households was conducted to obtain data on household sources of drinking water, household bottled water buying behaviour and perceptions of water quality. A binary probit model was used to examine the effects of socio‐economic and perception‐based variables on the likelihood that a household regularly bought bottled or purified water. Results show that households that perceived their primary source of water, whether from the tap or from other sources, to be unsafe were more likely to buy bottled or purified water. Education of household heads, the presence of children ages 0–5 years, household size and price were also found to have significant effects. Income, however, was not found to have influenced the decision to buy. Having piped access to the local water district and knowledge of government assurances about water safety were also not found to have a significant impact.     

Manual dishwashing habits: an empirical analysis of UK consumers

This study presents an overview of the washing up behaviour of consumers in the UK. Peoples' individual attitudes were observed as were the amount of water and energy used, the time taken and the cleaning performance. Additionally, manual dishwashing was compared with the use of automatic dishwashers. Participants were recruited to represent all geographic regions of the UK as well as forming a representative cross‐section of the population. Each of the 150 participants washed a full load of soiled tableware based on the standard EN 50242 ‘Electric Dishwashers for Household Use – Methods for Measuring the Performance’. For comparison, the best selling dishwasher in the UK in 2007 was tested under the same conditions as those in the consumer trial. Additionally, consumers who owned a full‐size dishwasher were asked to load it to the point when they decided that the dishwasher was full. The study shows that these consumers, on average, used 49 l of water and 1.7 kWh of energy, whereas the dishwasher used 13 l of water and 1.3 kWh of energy on average for the same amount of dishes under the conditions tested. Statistical analysis showed that these differences are significant. The dishes washed by hand were found to be slightly less clean than dishes washed in a dishwasher. For washing a full dishwasher load by hand, the participants needed, on average, 60 min, while they only took 9 min on average to load and unload the same amount of dishes in a dishwasher. The average participants were able to fill almost the full load into the dishwasher (96% of the items as used in a test following EN 50242).     

Who in Brazil Will Gain from Global Trade Reforms?

The potential impacts of multilateral trade liberalisation on developing countries are the subject of numerous controversies. One particular concern is that Brazil, a major agricultural exporter and a country with one of the world's most unequal income distributions, will reap a substantial share of the potential benefits to developing countries from agricultural trade reform, and that most of those benefits will go to large‐scale commercial farmers rather than to the country's smallholders. This claim is explored via a global general equilibrium model and a national model of Brazil containing multiple agricultural and non‐agricultural households. Brazil is found to account for nearly one‐half of all the benefits to developing countries deriving from global agricultural trade reform. These gains are associated with improvements in the welfare of each group and a lower incidence of poverty. Large‐scale producers gain more than smallholders as they tend to be relatively specialised in export products, but there are important gains to agricultural employees, who are relatively poor, and to urban households, who benefit from the expansion of the agro‐food sector. Overall, there is no discernible impact on income inequality, and no evidence that the gains to commercial farmers occur at the expense of poorer households.     

Residential energy behaviour: does generation matter?

In this study we tested the relevance of the generational hypothesis, that is, whether the era in which household members grew up matters when understanding and predicting their behaviour, on a sample of 600 Swedish households. These households participated in a survey where they answered questions about their own energy‐related residential energy behaviour. The answers were analysed for differences between age groups, between different attitudes to environmental issues, between income levels and between dwelling types. The results showed that age was as good an indicator as the other parameters. In several areas, older households had a more energy‐efficient residential behaviour than younger ones. Examples are laundry practices and indoor heat regulation. According to the generational hypothesis, this finding implies higher energy use in the future. The study also shows that there is a broad scope for improving residential energy behaviour in Swedish society by implementing changes in laundry avoiding practices, dishwashing behaviour and indoor temperature regulation.     

Manual dishwashing process – a pre‐assigned behaviour?

Global studies have observed many techniques of manual dishwashing causing different levels of performance and using quite different amounts of water, energy, time and detergent. It is not known, however, if these techniques are pre‐assigned to a person and persist when dishes are washed under different conditions, or are adapted to the specific type of dish‐cleaning process. Here we explored this question in a study with 40 test subjects selected equally from Germany and East European countries by asking them to wash two place settings of dishes with different amounts of soil three times. The results showed that the test subjects did not adapt their washing‐up behaviour to the amount of soil. In general, no significant differences were found in the water, energy and detergent consumption for all test subjects. Only the time used by the German test subjects to wash the fully soiled dishes was significantly longer compared with the dishes with only a quarter the quantity of soil, and no significant difference was observed for all other parts. The only significant difference found between the level of soiling of the dishes was the cleaning result achieved: The less soiled the dishes were, the better the final cleaning result was, and this related to all test subjects. This lends support to the proposition that the consumers did not adapt their washing‐up behaviour to the specific circumstances of the dishwashing job to be done but retained some pre‐assigned behaviour.     

Spatial behaviour of rural consumer households in highly developed economies. Survey results for Western Germany

This contribution attempts to identify effects of residential location of rural family households on their economic behaviour. Economic behaviour is understood to be reflected in the total spectrum of income and allocation of household resources. A holistic approach must go beyond activity on the labour and consumer markets and include non-market (‘informal’) activities of household members, taking into account domestic production of goods and services, interaction within social networks, the use of public commercial infrastructure, etc. The cost of living depends, among other things, on patterns of consumption, on regional price levels for consumer breadbaskets, as well as on costs involved in reaching public and commercial points of distribution. These factors result themselves from the interplay of economic forces giving rise to identifiable ‘economic territories’ and ‘market areas’ and ultimately to observable consumptive behaviour and ‘activity spaces’ of individual private households. Since data was available only for our rural survey households, comparative analysis of locational aspects was limited to consumption expenditures for which data could be found in administrative statistics for households in urban and periurban areas. The rural survey sample was found to have a higher average level and a different structure of expenditures when compared with their non-rural counterparts. At the same time, a preliminary effort was made in our own rural survey sample to determine the importance of non-market consumption for rural households. This included household consumption of domestic self-services (‘housework’), the utility value of owner-occupied dwellings, do-it-yourself production of substitutes for commercial goods and services, and exchanges within social networks. Results of this initial investigation of non-market elements of the household economy indicated that they were very important for the household's level-of-living and that they had a potential for compensating inequalities due to different degrees of access to market resources. Household strategies for optimizing their resource allocation to both market and non-market consumption were also examined. In general, ‘objective’ criteria and ‘subjective’ assessments by the survey households with respect to living conditions in rural Western Germany were found to give a positive image of rural life; however, differences in resource allocation strategies for market consumption between urban and rural households having been confirmed above, the question remains for future research about possible locational differences in household acquisition and use of non-market resources.     

A comparison of the efficacy of chef knife-cleaning methods

Improperly cleaned and sanitized chef knives present a potential contamination risk and a source for foodborne illness. This study compared the efficacies of two cleaning methods (three-compartment manual dishwashing and sanitizer wiping) at removing food soils from contaminated chef knives. Knife-washing procedures were standardized after observing knife-cleaning behavior in a kitchen. Adenosine triphosphate bioluminescence was used to measure levels of organic soils. Results indicated that the three-compartment manual dishwashing was more effective at removing food soils from knife surfaces than the sanitizer wiping (P < .0001). This study also assessed the influence of other factors on the soil removal efficacies.     

Credit card usage and consumer debt burden of households

The primary objectives of this study were to examine changes in credit card usage and the amount of debt between 1982 and 1986 and to identify factors influencing the amount of and changes in consumer debt held by households. Personal interviews were completed in 1982 and again in 1986 with the money managers of households in a small midwestern town in the U.S.A. The sample consisted of the 123 households that were represented both in the 1982 and 1986 surveys. Paired-samples t-tests were used to identify changes over time. Significant differences were found between 1982 and 1986 total household assets and total amount of debt. Regression analysis indicated that significant predictors of the amount of consumer debt burden were age, net income, total assets, and the degree to which managers felt comfortable with debt. Younger money managers were more likely to make larger monthly debt payments and have more consumer debt. Households with larger incomes and higher levels of assets also had higher total debt. Significant predictors of change in debt burden over the 4-year period were change in net income and total assets, with year-end savings being negatively correlated with consumer debt.     

Consumer Utilization of Food Labeling as a Source of Nutrition Information

The factors which influence consumer usage of food labels are investigated by a qualitative response model using the 1987–1988 Nationwide Food Consumption Survey data. Econometric results show that economic, sociodemographic, and consumer health awareness variables are determinants of food label usage. The implications of these findings include formulating government food labeling regulations and consumer educational programs and evaluating consumer health benefits of using food labels.     

Theoretical and Methodological Perspectives on Consumer Response to Electricity information

Extensive analysis of consumers’ responses to electricity information and feedback programs has yielded a consensus that such programs have little or no effect on consumers’ electricity use. We argue that these results may be misleading because offsetting usage effects are likely to occur both within and among households. Conventional experimental designs capture only net interhousehold usage effects. We propose alternative experimental designs better suited to answering important policy questions. An experiment involving continuous-display electricity-use monitors supports our prediction of dissimilar and offsetting behavioral responses among treatment households.     

Effects of family livelihoods on household resource allocation in highly industrialized society

This contribution attempts to identify effects of the type of livelihood of rural family households on their economic behaviour. Economic behaviour is understood to be reflected in the total spectrum of income and allocation of household resources. A holistic approach must go beyond activity in the labour and consumer markets and include non-market (‘informal’) activities of household members, taking into account domestic production of goods and services, interaction within social networks, the use of public and commercial infrastructure, etc. Our study of resource income and allocation as a function of the household's livelihood undertook a comprehensive investigation of both market and non-market resources of the sample households. Results for full- and part-time farming family households, as well as for employee and self-employed households in the non-farm sector were compared. All survey households were comprised of four persons with an ‘intermediate’ level of family income living in disadvantaged rural areas. Apparent, but yet unquantified differences between these socio-professional groups, e.g. with regard to time-inputs into gainful activity, to regularity of income, and to joint accounting of the family and the firm/holding in self-employed households, had lent support to the hypothesis that there are marked differences in resource income and allocation strategies between these socio-professional groups. Survey results revealed, in quantitative terms, large workloads involved with self-employment, fringe benefits from dependent employment and, on the other hand, side-benefits from self-employment, such as the use of business stocks for private consumption. Compensatory effects of the disposition and use of non-market resources with regard to lower incomes was observed, as well as considerable differences between the socio-professional subsamples in strategies for and amounts of capital formation and social security. Furthermore, productive roles within the household, and the household's interaction with its social networks and other public and semi-public entities differed strongly between the socio-professional groups. Variance analysis disclosed that the findings on the above described differences in resource income and allocation between the socio-professional subsamples were statistically highly significant.     

Customer segmentation in retailing based on retail brand patronage patterns

In this study, we propose an alternative method for customer segmentation based on households’ retail brand portfolios. We suggest blockmodeling, a method that is rooted in social network analysis, to identify homogeneous groups of customers being characterized by similar patronage patterns. In a second step, we combine this method with psychometric analyses to examine group differences based on sociodemographic and purchasing behavior variables. To illustrate our approach, we use a sample of 500 households out of a panel data set of 36,502 German households in the fast-moving consumer goods sector. The findings of our analyses yield support for our assumption that our methodology, taking into account the relationship between households and the different retail brands they patronize, provides a broader understanding of the antecedents of households’ multiple store patronage strategies, leading eventually to a new form of customer segmentation.