An integrated approach to water conservation for large users

2008 ◽  
Vol 8 (6) ◽  
pp. 625-632
Author(s):  
Guenter Hauber-Davidson
Keyword(s):  
Water Supply ◽  
Water Consumption ◽  
Water Conservation ◽  
Potable Water ◽  
Integrated Approach ◽  
Management Approach ◽  
Hierarchical Approach ◽  
Industrial Sectors ◽  
Sustainable Water Supply ◽  
A Site

Water conservation programs targeted at large users will play an integral role securing water supplies for cities in years to come. A hierarchical approach to water conservation—reducing consumption as a priority, then considering internal re-use of water and replacement of potable water with alternative sources—should be the key principle in sustainable water management. The application of this approach relies on a sound understanding of water consumption at a site: where water is used, why, when and how. This entails smart- and sub-metering of the water supply and detailed analysis of site activities to produce a site water balance. The hierarchical approach can then be applied, and conservation options can be costed to assess financial viability. ‘Packaging’ measures with different payback times together should be considered, along with funding support available. Based on implemented projects in Australia, an estimated 30% of potable water consumption within the commercial and industrial sectors could be saved at attractive payback periods. By adopting this integrated water conservation and management approach the same outcomes can be achieved with less potable water consumption. Appropriate source substitution is a pillar of sustainable water supply, providing water at less environmental, social and financial cost than the alternatives.

Analisis Neraca Air dan Prasarana Tampungan Air di DAS Ciujung

2021 ◽  
Vol 19 (2) ◽  
pp. 227-235
Author(s):  
Yulia Dwi Kurniasari ◽  
Hadi Susilo Arifin ◽  
Muhammad Yanuar Purwanto
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Consumption ◽  
Water Availability ◽  
Water Conservation ◽  
Water Storage ◽  
Water Demands ◽  
Consumption Index ◽  
Per Capita ◽  
Availability Index

Peningkatan jumlah penduduk, laju pertumbuhan ekonomi dan pengembangan wilayah berdampak pada kondisi sumber daya air. Keterbatasan prasarana tampungan air menjadi penyebab pentingnya distribusi sumber daya air secara berkelanjutan. Penelitian ini bertujuan mengetahui kondisi neraca air dan prasarana tampungan air yang ada di DAS Ciujung. Metode yang digunakan adalah menghitung kebutuhan dan ketersediaan air, Neraca surplus-defisit, Indeks Pemakaian Air (IPA) dan Indeks ketersediaan air per kapita berdasarkan metode SNI 6728.1.2015 serta indikator tampungan air. Ketersediaan air dihitung berdasarkan debit andalan 80% (Q80). Kebutuhan air dihitung dari kebutuhan rumah tangga, perkotaan, industri (RKI), irigasi, peternakan, perikanan dan pemeliharaan sungai. Prasarana tampungan air dihitung melalui indikator tampungan bangunan konservasi air yang ada. Hasil analisis menunjukkan bahwa kebutuhan air di DAS Ciujung sebesar 37,52 m3/detik sedangkan ketersediaan airnya sebesar 36,57 m3/detik. Hal ini mengindikasikan adanya defisit air sebesar 0,95 m3/detik. Indeks Pemakaian Air sebesar 1,03 (kategori jelek). Indeks ketersediaan air per kapita sebesar 623,05 (indikasi kelangkaan air). Sedangkan indikator tampungan air sebesar 31,34% (kategori baik).  ABSTRACTThe population growth, the rapid rate of economic growth and regional development will have an impact on the condition of water resources. Limited water storage infrastructure is the importance cause of allocating water resources. The objective of study is to know the water balance and water storage infrastructure in Ciujung Watershed. The analysis methods was used to calculate the amount of water supply and demand, to calculate the surplus-deficit balance, Water Consumption index (IPA), Water Availability Index per Capita refers to SNI 6728.1.2015 and water storage indicator. Water supply calculation based on the mainstay discharge of 80% (Q80). Water demands calculation from the demand of households, cities and industries (RKI), irrigation, livestock, fisheries and river maintenance. Capacity of existing water conservation storage used to predict the water storage infrastructure. The results of analysis show that the water demands in Ciujung Watershed is 37,52 m3/second, while the water supply is 36,57 m3/second. This indicates there is a water deficit of 0,95 m3/second. According to calculation, Water Consumption Index is 1,03 (bad category), It resulted that Water availability index per capita is 623,05 (water scarcity indicator). On the other hand, Indicator for water storage is 31,34% (good category).

scholarly journals Potential reduction in drinking water consumption at the headquarters of the Regional Electoral Court of Pernambuco - TRE/PE

2021 ◽  
Vol 9 (73) ◽  
Author(s):  
Amanda Rafaely Monte do Prado ◽  
Anna Elis Paz Soares ◽  
Simone Rosa da Silva
Keyword(s):  
Drinking Water ◽  
Water Consumption ◽  
Water Conservation ◽  
Potable Water ◽  
Economic Feasibility ◽  
Federal State ◽  
Municipal Governments ◽  
Air Conditioners ◽  
Alternative Water ◽  
Alternative Sources

Water conservation in buildings includes not only reducing the demand for potable water, but also adopting alternative sources for activities with less noble purposes. Public buildings under the jurisdiction of the Federal, State, and Municipal governments are required to promote actions aimed at the rational use and conservation of water, according to the responsibility established in the Environmental Agenda in Public Administration.In light of the above, this study aims to analyze the potential for reducing drinking water consumption at the headquarters building of the Electoral Regional Court of Pernambuco - TRE/PE through the use of alternative water sources, such as rainwater and condensed water from air conditioners. The methodology began with the characterization of the study site and the consumption of potable water.Subsequently, the technical and economic feasibility of rainwater and condensate water use was investigated, as well as a comparison between the proposed measures. The results obtained indicate that the techniques studied are beneficial, presenting significant potential for reducing the consumption of potable water that would be used for toilet flushing, 63% for rainwater use and 62% for condensate water.In addition, they can also provide annual financial savings of R$8,216.01 and R$8,045.74, respectively. Thus, besides reducing drinking water consumption, the proposed measures also promote the minimization of financial costs, whose capital can be used in the search for continuous improvement of services provided to society.

scholarly journals Pricing Strategy for Residential Water in Drought Years. Application to the City of Tianjin, China

Water ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1073
Author(s):  
Bing Yu ◽  
Yu Li ◽  
Jinggang Chu ◽  
Wei Ding ◽  
Guangtao Fu ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Conservation ◽  
Water Shortage ◽  
Pricing Strategy ◽  
Industrial Water ◽  
Net Benefit ◽  
Industrial Sectors ◽  
Starting Point ◽  
Residential Water

In drought years, most residents fail to improve water use efficiency due to residential water supply normally being prioritized in many regions, which makes other low-priority industrial water users suffer more from water shortage. This paper proposes a Pricing Strategy for Residential Water (PSRW), a water tariff that changes on annual time scale, based on the scarcity value of water resources, aiming to promote residential water conservation and reallocate water resources across the residential and industrial sectors during droughts. An optimization model to maximize the total benefit of residents and industrial sectors is introduced based on marginal benefit and price elasticity. The water shortage of industrial sectors is used to reflect the scarcity of water resources, and the lowest water supply standard for households and the maximum proportion of household water fee expenditure (HWFE) to household disposable income (HDI) are used to ensure the residents’ acceptability to price raising. It shows an “S-type” relationship between the optimal price raising coefficient and industrial water shortage, and two turning points are found in the curve, which are the starting and stopping points of price raising. The appearance of starting point depends on the non-negative net benefit, and the stopping point is affected by the factors that represent the residents’ acceptability to price raising. The application to Tianjin, a city in northern China with the rapid growth of population and economy but scarce water resources, shows PSRW is a potential means to improve water efficiency and optimize water resource allocation in water scarcity situations.

scholarly journals Increasing Challenges of Potable Water Supply and Its Implications on the Population of Buea Municipality, Cameroon

2021 ◽  
pp. 12-22
Author(s):  
Emmanuel Nong Buh ◽  
Roy Lyonga Mbua ◽  
Amos Fang Zeh
Keyword(s):  
Water Management ◽  
Water Supply ◽  
Water Scarcity ◽  
Potable Water ◽  
Water Sources ◽  
Local Communities ◽  
Management Approach ◽  
Potable Water Supply ◽  
Over Exploitation ◽  
Poor Management

The increasing challenges of potable water supply on the population of Buea municipality, Camerooon, if not monitored and effectively managed by government and all the local communities (stake holders) will be very detrimental to the municipality. The water demand of the growing population of Municipality is supplied by CAMWATER (Cameroon Water Utilities Corporation) and the local communities involved in potable water management. This study employed the use of a purposive systematic random sampling technique and focus group discussion among the community dwellers to evaluate the implications of potable water scarcity. A total of 350 questionnaires were administered in the field, interviews were conducted with water supply authorities and various stake holders in the municipality to identify the major problems faced by the inhabitants of Buea as a result of potable water supply challenges. Results revealed that about 27% of the population of Buea faces frequent water shortages, 32% and 41% of the respondents stated that the main causes of water supply challenges are poor management of potable water by the authorities concerned and over exploitation of water sources by the increasing population respectively. Besides the human factors mentioned above, changing climatic conditions worsen these challenges. In conclusion, over exploitation of potable water sources by the population and poor management by the authorities concerned stands as a major driver of the challenges of water scarcity in the Buea municipality. As such, we recommend an integrated water management approach as a means of making potable water supply challenges less problematic to the population of Buea.

Securing Potable Water Supply under Extreme Scarcity

10.1596/30593 ◽  
2018 ◽  
Author(s):  
Philippe Marin ◽  
Bambos Charalambous ◽  
Thierry Davy
Keyword(s):  
Water Supply ◽  
Potable Water ◽  
Potable Water Supply

USE AND PROTECTION OF WATER RESOURCES OF AZERBAIJAN

2017 ◽  
Author(s):  
Ramiz Tagirov ◽  
◽  
Maya Zeynalova ◽  
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Fresh Water ◽  
Water Consumption ◽  
Cultivated Land ◽  
Per Capita ◽  
The Republic ◽  
Active Temperature

The article examines the problem of fresh water, since in terms of water supply from its own resources per capita and per 1 km2, the republic is 8 times behind Georgia, 2 times behind Armenia. Significant water consumption in Azerbaijan is caused by its arid territory with a predominance of active temperature and a lack of precipitation, which leads to intensive irrigation of crops. At the same time, artificial irrigation is used on 70% of the cultivated land.

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