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Dissertations / Theses on the topic 'Quality of water water'

Author: Grafiati

Published: 4 May 2022

Last updated: 30 July 2025

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1

Maier, Stefan Heinrich. "Modelling water quality for water distribution systems." Thesis, Brunel University, 1999. http://bura.brunel.ac.uk/handle/2438/5431.

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Maintaining water quality in distribution systems has become a prominent issue in the study of water networks. This thesis concentrates on disinfectant and particle counts as two important indicators of water quality. The models discussed in this work are based on data collected by the author. The experimental set-up and procedure are described and observations of particle counts, particle counter size distributions, monochloramine as disinfectant, temperature, heterotrophic plate counts and epifluorescence microscopy counts are reported. A model of the response of particle counts to an increa

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2

Sun, Gwo-Shing 1959. "Water quality of gray water for reuse." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/191907.

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This study was designed to evaluate the safety of gray water for reuse purposes. The physical and chemical quality of treated gray water met water reuse standards set by the State of Arizona for surface irrigation purposes. The number of microorganisms in gray water significantly decreased after biological treatment and sand filtration. However, the number of fecal coliform bacteria in treated gray water was still higher than the standard for reuse as set by the State of Arizona for surface irrigation. This is also true for rain water which was stored in a tank. No indigenous Salmonella were i

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3

House, Margaret A. "Water quality indices." Thesis, Middlesex University, 1986. http://eprints.mdx.ac.uk/13379/.

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Given the present constraints on capital expenditure for water quality improvements, it is essential that best management practices be adopted whenever possible. This research provides an evaluation of existing practices in use within the water industry for surface water quality classification and assesses water quality indices as an alternative method for monitoring trends in water quality. To this end, a new family of indices have been developed and evaluated and the management flexibility provided by their application has been examined. It is shown that water-quality indices allow the reduc

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4

Kingdon, Lorraine B. "Water Quality Watchdogs." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/295555.

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5

Defenbaugh, Angela Lynn. "Evaluating Ohio River Basin Waters: A Water Quality and Water Resources Internship with the Ohio River Valley Water Sanitation Commission." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1389295851.

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6

Wang, Yuxin. "Source Water Quality Assessment and Source Water Characterization for Drinking Water Protection." Research Showcase @ CMU, 2014. http://repository.cmu.edu/dissertations/416.

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Source water quality plays a critical role in maintaining the quality and supply of drinking water, yet it can be negatively affected by human activities. In Pennsylvania, coal mining and treatment of conventional oil and gas drilling produced wastewaters have affected source water quality for over 100 years. The recent unconventional natural gas development in the Marcellus Shale formation produces significant volumes of wastewater containing bromide and has the potential to affect source water quality and downstream drinking water quality. Wastewater from coal-fired power plants also contain

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7

Wang, Zhong. "Adaptive water quality control in drinking water distribution." Cincinnati, Ohio : University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=1052325491.

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8

Sangameswaran, Sivaramakrishnan. "Water quality modeling of a storm water channel." ScholarWorks@UNO, 2003. http://louisdl.louislibraries.org/u?/NOD,52.

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Thesis (M.S.)--University of New Orleans, 2003.<br>Title from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering"--Thesis t.p. Vita. Includes bibliographical references.

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9

Courtis, Benjamin John. "Water quality chlorine management." Thesis, University of Birmingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289743.

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10

Erickson, Victoria Gillispie. "Designing for Water Quality." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/35105.

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The following document serves as a design guidebook to assist landscape architects, designers, planners, engineers, and architects in the practice of developing land while preserving water quality. This guidebook outlines methods for maximizing permeable surfaces by providing examples of ways to minimize impervious surfaces.<br>Master of Landscape Architecture

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11

Kilungo, Aminata Peter. "Drinking Water Quality Monitoring." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/306073.

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This dissertation involves two different studies. The first concerns the real-time detection of microbial contamination in drinking water using intrinsic fluorescence of the microorganisms. The prototype, “Blinky”, uses LEDs that emit light at 365nm, 590nm, and 635nm for ultraviolet, amber, and red light, respectively. At 365 nm, the cellular components excited include reduced pyridine nucleotides (RPNs), flavins, and cytochromes to distinguish viable bacteria; at 590 nm, the cellular components excited include cytochromes for non-viable bacteria; at 635 nm, the cellular components excited inc

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12

McCormick, Suzanne. "Air and Water Quality." College of Agriculture, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/295707.

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13

Evans, R. "Water quality requirement for oil industry water injection projects." Thesis, Cranfield University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333540.

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14

Tukker, Mary Jean. "Water quality information system for integrated water resource management." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/52054.

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Thesis (MEng)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: The processes of monitoring, modelling and managing the water quality of a catchmerit system including all its unique complexities and interrelationships requires an innovative tool or set of tools to help water managers with their decision making. Numerous methods and tools have been developed to analyse and model the real world. However, many of these tools require a fair degree of technical expertise and training to operate correctly and their output may have to be translated or converted to meaningful information

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15

Shang, Feng. "INPUT-OUTPUT WATER QUALITY MODEL IN WATER DISTRIBUTION SYSTEM." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1028649564.

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16

WANG, ZHONG. "ADAPTIVE WATER QUALITY CONTROL IN DRINKING WATER DISTRIBUTION NETWORKS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1052325491.

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17

JIA, Xuexiu. "EXTENDED METHODOLOGY FOR WATER RESOURCES AND WATER-RELATED ENERGY ASSESSMENT ADDRESSING WATER QUALITY." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-433451.

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Problémy s vodou, zejména její nedostatek a znečištění, ovlivňují každodenní lidský život a hospodářský vývoj. Globální změny klimatu zvyšují pravděpodobnost a četnost extrémních událostí jako jsou sucho a záplavy. Rostoucí problémy s nepravidelnou dostupností a znečištěním vody vyžadují pokročilejší metodiky hodnocení vodních zdrojů, které povedou k efektivnímu využití a hospodaření s vodou. Tato práce se zabývá rozšířenými metodikami pro hodnocení vody z pohledu její kvality a kvantity a pro hodnocení spotřeby energie a produkce emisí souvisejících s vodou. Tři hlavní metodiky jsou navrženy

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18

Tilley, Aleceia Marie. "Comparison study of the states of Washington and Oregon's total maximum daily load (TMDL) process." Online pdf file accessible through the World Wide Web, 2007. http://archives.evergreen.edu/masterstheses/Accession86-10MES/Tilley_A%20MESThesis%202007.pdf.

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19

Boyd, Nathan Andrew. "Impact of sediment-water interactions upon overlying water quality in an urban water system." Thesis, Manchester Metropolitan University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366236.

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20

Martinez, Vila, and Martin Alvaro. "Integrated water resources management: restoration of water quality in water resources from developing countries." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/31626.

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Water is most essential but scarce resource in developing countries. Presently the quality & the availability of the fresh water resources is the most pressing of the many environmental challenges on the national horizon. The stress on water resources is from multiple sources and the impacts can take diverse forms. Geometric increase in population coupled with rapid urbanization, industrialization and agricultural development has resulted in high impact on quality and quantity of water in developing countries. The situation warrants immediate redressal through radically improved water resource

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21

Schal, Stacey L. "WATER QUALITY SENSOR PLACEMENT GUIDANCE FOR SMALL WATER DISTRIBUTION SYSTEMS." UKnowledge, 2013. http://uknowledge.uky.edu/ce_etds/13.

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Water distribution systems are vulnerable to intentional, along with accidental, contamination of the water supply. Contamination warning systems (CWS) are strategies to lessen the effects of contamination by delivering early indication of an event. Online quality monitoring, a network of sensors that can assess water quality and alert an operator of contamination, is a critical component of CWS, but utilities are faced with the decision of what locations are optimal for deployment of sensors. A sensor placement algorithm was developed and implemented in a commercial network distribution model

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22

Webb, David W. "WATER QUALITY VARIATIONS DURING NITRIFICATION IN DRINKING WATER DISTRIBUTION SYSTEMS." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4492.

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This thesis documents the relationship among the major water quality parametersduring a nitrification episode. Nitrification unexpectedly occurred in a chloraminated pilotdrinking water distribution system practicing with a 4.0 mg/L as Cl[subscript 2] residual dosed at 4.5:1Cl[subscript 2]:NH[subscript 3]-N. Surface, ground and sea water were treated and disinfected withmonochloramines to produce finished water quality similar to regional utility water quality.PVC, galvanized, unlined cast iron and lined iron pipes were harvested from regionaldistribution systems and used to build eighteen pil

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23

Alere, Ilze. "Aspects of water quality dynamics in drinking water distribution systems." Licentiate thesis, Luleå tekniska universitet, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16878.

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24

Achimore, Ian Garner. "Public funding and water coalitions do they improve water quality? /." Connect to Electronic Thesis (CONTENTdm), 2009. http://worldcat.org/oclc/449187539/viewonline.

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25

Shi, Yi. "Biofilm impacts on water quality in drinking water distribution systems." Thesis, Cardiff University, 2018. http://orca.cf.ac.uk/111782/.

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Drinking water distribution systems (DWDSs) account for the majority of the infrastructure for transporting water from treatment plants to customers’ tap. During the transportation, water quality deteriorates due to the unavoidable accumulation of biofilm within the pipelines. The microbial activity and ecology within the biofilm have great impact on the water quality degradation process. Within DWDSs using chloramine as disinfectant, nitrification caused by nitrifying bacteria is increasingly becoming a concern as it poses a great challenge for maintaining water quality. In order to control n

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26

Clinch, John Richard. "Remote spectrophotometric water quality monitoring." Thesis, University of Hull, 1988. http://hydra.hull.ac.uk/resources/hull:5897.

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The conventional approach to water quality monitoring is to combine periodic sampling with batch analysis in the laboratory. Such a procedure is both labour intensive and time consuming, there are likely to be sample stability and contamination problems, and the information provided is unlikely to be continuous or immediate. This research focussed on the design and construction of fully automated and portable monitors based on flow injection analysis and incorporating solid state photometric detectors. A novel solid state photometric detector was constructed, incorporating light emitting diode

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27

Wright, Julian Paul. "Water quality in estuarine impoundments." Thesis, Durham University, 2002. http://etheses.dur.ac.uk/4027/.

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The impounding of estuaries is currently a popular approach to urban regeneration in the UK, with barrages constructed (Tees, Wansbeck, Tawe, Cardiff Bay, Lagan and Clyde) or proposed (Usk, Loughor, Neath, Hayle, Avonmouth and Ipswich) nationwide. Impounding fundamentally alters the dynamics of estuaries with consequences in terms of sedimentation patterns and rates, ecology, flooding, groundwater, etc. This thesis presents the findings from research into the effects of impounding on estuarine water quality. A series of surveys of a range of physical and chemical parameters were carried out wi

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28

Nagavalli, Venkata Raja Satya Teja. "Smart Discrete Water Quality Sensor." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1449272008.

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29

Marchiori, Giovanni <1991&gt. "Water Quality Management in China." Master's Degree Thesis, Università Ca' Foscari Venezia, 2018. http://hdl.handle.net/10579/13022.

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The aim of this thesis is to provide a comprehensive view of surface water and groundwater quality management as in these recent years it has been a widely discussed topic of international relevance, with a particular focus on China's legislative and regulatory developments that had an impact on water quality related issues.

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30

Telci, Ilker Tonguc. "Optimal water quality management in surface water systems and energy recovery in water distribution networks." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45861.

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Two of the most important environmental challenges in the 21st century are to protect the quality of fresh water resources and to utilize renewable energy sources to lower greenhouse gas emissions. This study contributes to the solution of the first challenge by providing methodologies for optimal design of real-time water quality monitoring systems and interpretation of data supplied by the monitoring system to identify potential pollution sources in river networks. In this study, the optimal river water quality monitoring network design aspect of the overall monitoring program is addressed b

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31

Shen, Zi-soen Belwin. "Transboundary water pollution and its implications for planning and environmental management : Shenzhen-Hong Kong border region as a case study /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21041775.

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32

Diawuo, Felix. "Water Supply of Accra, with Emphasis on Sachet Water." Thesis, KTH, Vattenförvaltning, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99333.

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This project seeks to assess the impact of the sachet water industry on the health, socio-economic and the environmental situation of the inhabitants of Accra, the capital city of Ghana. In addressing the situation, the driving forces which have fuelled the shift of consum-er taste from the normal tap water and the traditional hand-tied-ice water products to the plastic sachet water (commonly known in as "Pure Water") are identified. Lack of access to continuous flow of improved water and the perceived poor quality of the urban water supply system as results of poor management structure are id

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33

Gemesi, Zsolt. "Plumbing agricultural landscapes for water quality improvement coexistence of intensive agriculture and good water quality /." [Ames, Iowa : Iowa State University], 2007.

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34

Silva, Carlos G. "Calculating Willingness-To-Pay As a Function of Biophysical Water Quality and Water Quality Perceptions." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3325.

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When estimating economic value associated with changes in water quality, recreation demand models typically depend upon either (i) biophysical measures of water quality as collected by natural scientists or (ii) the perception of water quality by recreationists. Models based upon biophysical metrics (such as oxygen concentration, pollutant concentrations, Secchi depth measurements, etc.) operate on the assumption that people can perceive and respond to these metrics, or respond to factors that are, indeed, correlated with the biophysical measure. Economists have often estimated willingness-to-

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35

Stinson, Christian David. "Changes in Water Quality During Recharge of Central Arizona Project Water." Thesis, The University of Arizona, 1999. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0011_m_sip1_w.pdf&type=application/pdf.

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36

Hansen, Allison Jean. "Water quality analysis of the piped water supply in Tamale, Ghana." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90019.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 55-56).<br>The United Nation's Millennium Development Goal Target 7.C is to "halve, by 2015, the proportion of the population without sustainable access to safe drinking water". While the UN claimed to have met this goal, studies have shown that the "improved" sources used as a metric to track progress do not always supply safe water. One example of these improved sources is the piped water in Tam

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37

McNeill, Laurie S. "Water Quality Factors Influencing Iron and Lead Corrosion in Drinking Water." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/28242.

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Corrosion is one of the most complicated and costly problems facing drinking water utilities. Corrosion of iron pipes can lead to economic losses and customer complaints, while lead corrosion poses a serious health risk. This work first synthesizes nearly 100 years of iron corrosion research to provide the water industry with an updated understanding of factors that influence iron pipe corrosion including water quality and composition, flow conditions, biological activity, and corrosion inhibitors. Potential impacts of upcoming regulations on iron corrosion are also considered. Next, a fou

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38

Coltman, Kenna Maria. "Water table management effects on water quality: a soil column study." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1195165287.

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39

LI, ZHIWEI. "NETWORK WATER QUALITY MODELING WITH STOCHASTIC WATER DEMANDS AND MASS DISPERSION." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1147989825.

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40

Wu, Sophia(Sophia W. ). "Understanding the effect of intermittent water supply on drinking water quality." Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/131001.

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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, Technology and Policy Program, February, 2021<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 78-82).<br>There are nearly 1 billion people who obtain their drinking water through piped distribution networks that operate intermittently. Intermittent Water Supply (IWS) operations allow for periods of stagnation and depressurization that create conditions favorable for biofilm growth on pipe surface. Biofilms are

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41

Coltman, Kenna Marie. "Water table management effects on water quality : a soil column study /." Connect to resource, 1992. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195165287.

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42

Xie, Xiongfei. "Operation Optimization and Water Quality Simulation of Potable Water Distribution System." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5406.

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A potable water distribution system (WDS) consists of pipes, pumps, valves, storage tanks, control and supporting components. Traditionally, it has two basic functions. First, provides end users with potable water at sufficient pressures and good water quality. Second, provides sufficient pressure and flow for fire fighting. Currently, potable water is still the least expensive material for fire fighting. To accomplish these two goals, water utilities have to consider the integrity and security of the water network. As a result, this research selected three research topics that are closely rel

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43

Beltrán-Abaunza, José M. "Remote sensing in optically complex waters : water quality assessment using MERIS data." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123724.

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This PhD study focusses on the use of MEdium Resolution Imaging Spectrometer (MERIS) data for reliable and quantitative water-quality assessment of optically-complex waters (lake, brackish and coastal waters). The thesis is divided into two parts: A. intercalibration of reflectance measurements in different optically-complex water bodies (Paper I), and validation of various satellite processing algorithms for the coastal zone (Paper II). B. Applications: the use of MERIS data in integrated coastal zone management mostly using Himmerfjärden bay as an example. Himmerfjärden bay is one of the mos

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44

Strömbeck, Niklas. "Water quality and optical properties of Swedish lakes and coastal waters in relation to remote sensing /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5037-7/.

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Cheung, Sheung-ching. "Transboundary water pollution between Hong Kong and the Pearl River Delta Region : Dongjiang River as a case study /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25247645.

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46

Kwong, Pui-ki. "Surface water quality indicators in China and their implications for sustainability." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36618718.

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47

Goodhue, Nigel David. "Hydrodynamic and water quality modelling of the lower Kaituna River and Maketu Estuary /." The University of Waikato, 2007. http://hdl.handle.net/10289/2375.

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The Maketu Estuary is a shallow intertidal estuary (2.3 km2) located in the Bay of Plenty, North Island, New Zealand. The Kaituna River contributes the largest freshwater flow into the estuary through control gates. Lake Rotoiti and indirectly Lake Rotorua supply the base flow to the Kaituna River, with tributaries along the 50 km reach also significantly contributing to the flow. Water quality within the river is affected by elevated nutrients, faecal coliforms, high oxygen demand and algae concentrations derived from the lakes as well as contributions from tributaries and industrial and urba

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48

Haigh, R. A. "Water balance and water quality studies in an underdrained clay soil catchment." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371543.

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Adeloye, A. J. "Value of river flow data for water resources and water quality assessment." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378277.

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English, Ross M. "Legislation for clean water : Congress and the Water Quality Act of 1987." Thesis, Keele University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301457.

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