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Dissertations / Theses on the topic 'The quality of drinking water'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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1

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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2

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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3

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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4

Kavcar, Pınar Sofuoğlu Sait C. "Assessmanet of exposure and risk associated with trihalomethanes and other volatile organic compounds in drinking water/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/cevremuh/T000375.pdf.

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Thesis (Master)--İzmir Institute Of Technology, İzmir, 2005.<br>Keywords:Trihalomethane, volatile organic compounds, drinking water, risk assessment, exposure. Includes bibliographical references (leaves. 64-70).
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5

Prince, Rachael Anne. "Formation of discoloured water and turbidity in an unfiltered water distribution system." Swinburne Research Bank, 2008. http://hdl.handle.net/1959.3/36071.

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Thesis (PhD) - Swinburne University of Technology, Faculty of Engineering and Industrial Sciences, 2008.<br>A thesis submitted for the degree of Doctor of Philosophy, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, 2008. Typescript. Includes bibliographical references: p. 263-278.
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6

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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7

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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8

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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9

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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10

Scott, Veronica J. "Strontium in Drinking Water: Assessing Strontium as a Drinking Water Contaminant in Virginia Private Wells." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/90572.

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Approximately 80% of Virginians with private drinking water (PDW) sources are unaware of the quality of their drinking water. Strontium is a water quality contaminant gaining recognition at the federal level. At concentrations >1.5 mg/L, strontium substitutes calcium in the bones leading to bone density disorders (e.g. rickets). This is particularly problematic for children and individuals with low calcium and low protein diets. Because most Virginians do not know the quality of their PDW and since strontium poses a public health risk, this study investigates the sources of strontium in PDW in
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11

Farrell-Poe, Kitt, Lisa Jones-McLean, and Scott McLean. "Matching Drinking Water Quality Problems to Treatment Methods." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2011. http://hdl.handle.net/10150/156929.

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6 pp.<br>1. Drinking Water Wells; 2. Private Water Well Components; 3. Do Deeper Wells Mean Better Water; 4. Maintaining Your Private Well Water System; 5. Private Well Protection; 6. Well Water Testing and Understanding the Results; 7. Obtaining a Water Sample for Bacterial Analysis; 8. Microorganisms in Private Water Wells; 9. Lead in Private Water Wells; 10. Nitrate in Private Water Wells; 11.Arsenic in Private Water Wells; 12. Matching Drinking Water Quality Problems to Treatment Methods; 13. Commonly Available Home Water Treatment Systems; 14. Hard Water: To Soften or Not to Soften; 15. S
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12

Furlong, Claire. "Drinking water practices in Amazonian Peru : exploring the link between perceived and actual drinking water quality." Thesis, University of Newcastle upon Tyne, 2010. http://hdl.handle.net/10443/3383.

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Perceived drinking water quality is a factor known to cause the failure of drinking water schemes in developing countries. This leads to the loss of health benefits which are the main aims of such schemes. This thesis examines the relationship between perceived and actual drinking water quality and the factors which feed into perceived drinking water quality in a developing countries context. A mixed methodology approach was used which included the use of the following methods: a questionnaire (n=96), participant observations, interviews, a media study, analysis of other texts, sanitary survey
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13

Tezce, Gozde. "Drinking Water Quality In Ankara: A Monitoring Study." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612749/index.pdf.

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ABSTRACT DRINKING WATER QUALITY IN ANKARA: A MONITORING STUDY Tezce, G&ouml<br>zde MS, Department of Environmental Engineering Supervisor: Prof. Dr. &Uuml<br>lk&uuml<br>Yetis Co-Supervisor: Prof. Dr. Filiz B. Dilek December 2010, 124 pages Following the event of severe drought experienced in 2007, it was decided to use Kesikk&ouml<br>pr&uuml<br>Reservoir as an additional source of water supply for the city of Ankara. Thereupon, there have been debates on the quality of Kesikk&ouml<br>pr&uuml<br>Reservoir water with the claims that some parameters, primarily sulfate and arsenic, were n
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Bittner, Andrew (Andrew Benjamin) 1974. "Nepal drinking water quality assessment : nitrates and ammonia." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/80930.

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15

Owen, Anne. "Exploring factors influencing customer complaints about drinking water." Thesis, University of Surrey, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326485.

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16

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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17

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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18

Romero, Gomez Pedro. "Transport Phenomena in Drinking Water Systems." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194495.

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The current computer models used for simulating water quality in potable water distribution systems assume perfect mixing at pipe junctions and non-dispersive solute transport in pipe flows. To improve the prediction accuracy, the present study examines and expands these modeling assumptions using transport phenomena analyses. Whereas the level of solute mixing at a cross-type junction is evaluated numerically via Computational Fluid Dynamics (CFD), the axial transport in laminar flows is investigated with both CFD simulations and corresponding experimental runs in a single pipe. The findings
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19

Forsberg, Agnes. "Evaluation of drinking and irrigation water quality in Njuli, Malawi." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-236643.

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Good water quality is very central to a country's wellbeing. Clean water is required to ensureboth the health of the population and good ecological status of the country. It is thereforeimportant to continually conduct surveys to determine the status of the water used in, forexample, households, industries and agriculture.Elevated levels of metals, sulphate, nitrate and phosphate in drinking water can lead to poorhealth through consumption and reduced harvest when the water is used in irrigation.This report aimed at examining whether the water resources available in the vicinity of Njuliquarry
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20

Ekanayake, Sarath. "Characteristics of particles contributing to turbidity in potable water distribution networks." Swinburne Research Bank, 2009. http://hdl.handle.net/1959.3/61048.

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Thesis (PhD) - Faculty of Life and Social Sciences, Swinburne University of Technology, 2009.<br>Submitted in full requirement for the degree of Doctor of Philosophy, Faculty of Life and Social Sciences, Swinburne University of Technology - 2009. Typescript. Includes bibliographical references (p. 137-160)
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21

Frederick, Brent Ray. "Magnesium supplementation through drinking water to improve pork quality." NCSU, 2003. http://www.lib.ncsu.edu/theses/available/etd-05162003-134628/.

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Four experiments were conducted to investigate the effect of short term magnesium supplementation through drinking water prior to harvest on pork quality of pigs. Two days of magnesium supplementation (experiment 1) appeared optimal to improved pork quality. Older, slower growing pigs produced higher pork quality than younger faster growing pigs; however, magnesium supplementation had no effect (experiment 2). The presence of the Halothane and to a greater extent the Rendement Napole mutation reduced the quality of pork (experiment 3). Furthermore, pigs with both mutations had poorer pork qual
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22

Olagunju, Kehinde. "Drinking Water Quality Perception Survey in the SIUE Community." Thesis, Southern Illinois University at Edwardsville, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10685668.

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<p> Water quality perception is borne out of various factors, which include taste, risk perception, water chemical and microbial parameters, trust in supplier, among others. This study addressed some of the factors that influence drinking water quality perception in the SIUE community for tap and bottled water. This was done through a survey that was delivered to the students, faculty, administration, staff, and alumni members of the university; a link to the online survey was provided via the school email, and a total number of 779 respondents participated in the survey. Some of the variables
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23

Michael, Heidi. "Drinking-water quality assessment and treatment in East Timor : case study : Tangkae /." Online version, 2006. http://www.ewb.org.au/resource/file/82_Drinking_Water_Quality_and_Treatment.pdf.

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Thesis--University of Western Australia, 2006.<br>"This thesis is presented in partial fulfilment of the requirements for the Degree of Environmental Engineering, The University of Western Australia, 2006." "Engineering dissertation." Cover title. Includes bibliographical references (p. 92-94). Also available electronically from the Engineers Without Borders website : http://www.ewb.org.au/main/ (Viewed 20/11/2009).
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24

Chang, Tao. "Robust model predictive control of water quality in drinking water distribution systems." Thesis, University of Birmingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398894.

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This thesis develops online feedback control of chlorine residuals performing at the lower level of a hierarchical structure of integrated quantity and quality control in drinking water distribution systems (DWDS), which provides a practical solution for online water quality control in DWDS. Input-output and state-space models of the chlorine residuals are developed from mathematical models of chlorine residual dynamics. The existing path analysis algorithm is extended and utilized to obtain the parameter structure. Joint parameter and model structure error estimation is developed using boundi
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25

Veum, Kristen Sloan. "Disinfection by-product precursors and formation potentials of Missouri reservoirs." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4534.

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Thesis (M.S.) University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 29, 2007) Includes bibliographical references.
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26

So, King-lung Benny. "A review of drinking water management in Hong Kong /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21301402.

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27

Tanellari, Eftila. "Essays on the Economics of Drinking Water Quality and Infrastructure." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/27769.

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This dissertation consists of three essays that examine consumer behavior with respect to drinking water quality issues. The first essay uses contingent valuation method to explore consumersâ willingness to pay (WTP) for a hypothetical material in home drinking water infrastructure that will remain leak free. Willingness to pay is investigated using both dichotomous choice and dichotomous choice with follow-up formats using a national telephone survey of consumers. Our results indicate that consumersâ concerns about future system failures and income positively affect their WTP for an impro
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28

Coulibaly, Housseini. "Drinking water quality and management strategies in small Quebec utilities." Thesis, Université Laval, 2003. http://www.theses.ulaval.ca/2003/21382/21382.pdf.

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La présente thèse porte sur une étude des petits systèmes municipaux du Québec (en l’occurrence, ceux desservant 10 000 personnes ou moins) et comporte trois volets. Le premier volet se focalise sur un portrait historique de la qualité de l’eau distribuée et sur les stratégies de gestion. Parallèlement, il met l'historique de la qualité et les stratégies de gestion en relation avec certains paramètres importants de la qualité de l’eau. Les résultats de ce volet montrent que pour les systèmes s’approvisionnant en eau de surface et pratiquant uniquement une chloration, la différence entre le nom
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Coulibaly, Housseini Diadié. "Drinking water quality and management strategies in small Quebec utilities." Doctoral thesis, Université Laval, 2003. http://hdl.handle.net/20.500.11794/17867.

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La présente thèse porte sur une étude des petits systèmes municipaux du Québec (en l’occurrence, ceux desservant 10 000 personnes ou moins) et comporte trois volets. Le premier volet se focalise sur un portrait historique de la qualité de l’eau distribuée et sur les stratégies de gestion. Parallèlement, il met l'historique de la qualité et les stratégies de gestion en relation avec certains paramètres importants de la qualité de l’eau. Les résultats de ce volet montrent que pour les systèmes s’approvisionnant en eau de surface et pratiquant uniquement une chloration, la différence entre le nom
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Chadik, Paul Arthur. "Modeling trihalomethane formation in drinking water after alum coagulation or activated carbon adsorption." Diss., The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_293_sip1_w.pdf&type=application/pdf.

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31

Fogelman, Shoshana. "Development of a New Calibration Method for the Continuous On-Line Analysis and Monitoring of Drinking Water Quality Based on Neural Computing Techniques." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/366072.

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Accurate, continuous, real-time water quality information is becoming of paramount importance to ensure safe supplies of potable water are available, as worldwide contamination of our freshwater resources increases and we diversify our reliance on alternative water resources. Nevertheless, the acquisition of continuous reliable data for aqueous environments has proven difficult to achieve, as the majority of on-line monitoring technologies currently employed are based on direct adaptations of traditional wet laboratory methods, which were not originally designed for field or continuous monitor
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32

Guan, Xiaotao. "IMPACT OF ZINC ORTHOPHOSPHATE INHIBITOR ON DISTRIBUTION SYSTEM WATER QUALITY." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3294.

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This dissertation consists of four papers concerning impacts of zinc orthophosphate (ZOP) inhibitor on iron, copper and lead release in a changing water quality environment. The mechanism of zinc orthophosphate corrosion inhibition in drinking water municipal and home distribution systems and the role of zinc were investigated. Fourteen pilot distribution systems (PDSs) which were identical and consisted of increments of PVC, lined cast iron, unlined cast iron and galvanized steel pipes were used in this study. Changing quarterly blends of finished ground, surface and desalinated waters were f
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Heim, Timothy Howard. "Impact of Polymeric Plumbing Materials on Drinking Water Quality and Aesthetics." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/32260.

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<p>The use of polymer pipes is now very common in home plumbing and other parts of the drinking water distribution system. Many taste and odor complaints in drinking water are known to originate from contact of water with materials. The ability of polymer pipes used in home plumbing to affect drinking water quality and aesthetics was investigated using the Utility Quick Test (UQT). Analysis of water quality and aesthetics were conducted in the absence of disinfectant and the presence of either chlorine or chloramines. A Flavor Profile Analysis (FPA) panel was trained according to Standard Met
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Welk, Amber Lee. "A contribution towards real-time forecasting of algal blooms in drinking water reservoirs by means of artificial neural networks and evolutionary algorithms." Click here to access, 2007. http://digital.library.adelaide.edu.au/dspace/handle/2440/48542.

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Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, Discipline of Ecology and Evolutionary Biology, 2008.<br>"December 2007" Bibliography: pages 172-185. Also available in print form.
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Sharpe, Taylor Jeffery. "Assessing a Fluorescence Spectroscopy Method for In-Situ Microbial Drinking Water Quality." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3838.

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Waterborne disease is a significant contributor to the global burden of disease, in particular among high-risk populations in developing nations. State-of-the-art methods for the enumeration of microbial pathogens in drinking water sources have important limitations, including high initial cost, 24-48 hour delays in results, high staffing and facility requirements, and training requirements which all become especially problematic in the developing nation context. A number of alternative approaches to microbial water quality testing have been proposed, with the goal of decreasing the required t
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COPELAND, RACHEL C. "DISSOLVED ARSENIC RELEASE FROM DRINKING WATER DISTRIBUTION SYSTEM SOLIDS." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1132158901.

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37

Crouse, Anton. "The protection of water sources in developing countries." Thesis, Cape Technikon, 1986. http://hdl.handle.net/20.500.11838/2167.

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Thesis (Diploma (Civil Engineering))--Cape Technikon, 1986.<br>In rural areas in Southern Africa a nearby stream or spring is a village or kraal 's main water supply. The majority of these elementdry water sources are polluted. In this project the health hazard of polluted water and methods to protect water sources from pollution are discussed. The project consists of a report of fieldwork done in Southern Kwazula and compiling from the results a Technical Paper on water source protection.
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38

Zhao, Bingjie. "BIOSTABILITY IN DRINKING WATER DISTRIBUTION SYSTEMS IN A CHANGING WATER QUALITY ENVIRONMENT USING CORROSION INHIBITORS." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2666.

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In this study, the bacterial growth dynamics of 14 pilot drinking water distribution systems were studied in order to observe water quality changes due to corrosion inhibitor addition. Empirical models were developed to quantity the effect of inhibitor type and dose on bacterial growth (biofilm and bulk water). Water and pipe coupon samples were taken and examined during the experiments. The coupons were exposed to drinking water at approximately 20 &deg;C for at least 5 weeks to allow the formation of a measurable quasi- steady-state biofilm. Bulk water samples were taken every week. In this
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Xie, Mingyu. "Model predictive control of water quality in drinking water distribution systems considering disinfection by-products." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7207/.

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The shortage in water resources have been observed all over the world. However, the safety of drinking water has been given much attention by scientists because the disinfection will react with organic matters in drinking water to generate disinfection by-products (DBPs) which are considered as the cancerigenic matters. Although much research has been carried out on the water quality control problem in DWDS, the water quality model considered is linear with only chlorine dynamics. Compared to the linear water quality model, the nonlinear water quality model considers the interaction between ch
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Walter, Sunette. "Characterization of heterotrophic plate count (HPC) bacteria from biofilm and bulk water samples from the Potchefstroom drinking water distribution system / by S. Walter." Thesis, North-West University, 2009. http://hdl.handle.net/10394/4977.

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The presence of heterotrophic plate count (HPC) bacteria in drinking water distribution systems is usually not considered harmful to the general consumer. However, precautions must be taken regarding the immunocompromised. All water supply authorities in South Africa are lawfully required to provide consumers with high-quality drinking water that complies with South African-and international standards. This study mainly focused on the isolation, identification and characterization of HPC and other bacteria from biofilm-and bulk water samples from two sampling points located within the Potchefs
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41

Miller, Leigh Burgess. "Source Protection and Drinking Water Quality in the Comarca Ngabe-Bugle, Panama." Thesis, Michigan Technological University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10246067.

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<p> The goal of this study was to identify practical, cost-effective drinking water source protection measures in the Comarca Ng&auml;be-Bugl&eacute;, a remote indigenous region of Panama. Water samples from 40 spring captures were tested for <i>E. coli</i> and total coliforms, and quality results were then compared with maintenance and source protection criteria using odds ratios. The water was contaminated; only two samples passed Panamanian drinking water standards--0 CFU/100 ml for <i>E. coli</i> and 3 CFU/100 ml for total coliforms. Mean <i>E. coli</i> was 187 CFU/100 ml and mean total co
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Ratikane, Mosepeli. "Quality of drinking water sources in the Bloemfontein area of the Mangaung Metropolitan Municipality." Thesis, Bloemfontein : Central University of Technology, Free State, 2013. http://hdl.handle.net/11462/210.

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Thesis (M. Tech. (Environmental Health)) -- Central University of technology, Free State, 2013<br>Introduction: Drinking water of poor quality can cause a variety of diseases and may even result in death. The impact of poor drinking water is a course for concern even in South Africa. Therefore, the physical, chemical and microbiological drinking water quality was investigated in the peri-urban area of Bainsvlei and the Woodlands Hills Estate in Bloemfontein, Free State. Materials and Methods: The water quality was assessed in 20 identified sampling sites for three series with ten weeks apar
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Alshehri, Abdulrahman. "IMPACT OF CORROSION INHIBITOR BLENDED ORTHOPHOSPHATE ON WATER QUALITY IN WATER DISTRIBUTION SYSTEMS." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3248.

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The impact of blended orthophosphate (BOP) inhibitor addition on the corrosion of iron, copper, and lead in drinking water distribution systems was studied under changing water quality environment. Release of iron, copper, and lead were monitored at varying inhibitor doses and changing blends of source waters (groundwater, surface water, and desalinated water). Solid corrosion products on pipe surfaces under BOP treatment were evaluated with surface characterization techniques. Performance of the BOP inhibitor was compared to other corrosion control strategies. Iron scales for iron and galvani
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Smith, Ethan Pace. "Land Cover as a Predictor of Safe Drinking Water Act Violations in Central Appalachia." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/98815.

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Thousands of communities across the nation are exposed to health risks from contaminated drinking water. Upstream anthropogenic land covers have been linked with the degradation of source drinking water quality and likely pose a threat to a community water system's (CWS's) ability to provide safe drinking water. The goal of this study was to predict the differences in compliance with the Safe Drinking Water Act (SDWA) between CWSs based on their upstream land cover, economic situation, and system characteristics. In Central Appalachia, from 2001 to 2016, proportions of land cover in each targe
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Johnson, Heather. "Determination of the Influence of Polyurethane Lining on Potable Water Quality." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/41233.

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The corrosion of the drinking water distribution system is a serious problem in the United States. The annual cost to repair damages related to corrosion for public utilities in the United States are estimated at $22 billion. Polyurethane can be used as an in situ pipe liner which reduces the overall cost to rehabilitate water mains. Polyurethane is gaining popularity as a drinking water pipe liner. Not much is known about the effects of polyurethane to reline potable pipes. Polyurethane has only recently begun to be approved by the U.S. Environmental Protection Agency for use in drinking wate
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Patton, Hannah Elisabeth. "Springing for Safe Water: Drinking Water Source Selection in Central Appalachian Communities." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/95042.

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There are rural residents of Central Appalachia that collect their drinking water from roadside springs despite having access to in-home piped point-of-use (POU) water. Residents have cited perceptions about water availability/quality as primary motivators for collecting drinking water from roadside springs. Water from roadside springs has been found to contain total coliform and E. coli, suggesting that consumers may be at an increased risk of contracting gastrointestinal illnesses. This research effort seeks to better understand roadside spring usage in Central Appalachia, by exploring motiv
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Clark, David D. "Water Quality, Aesthetic, and Corrosion Inhibitor Implications of Newly Installed Cement Mortar Lining Used to Rehabilitate Drinking Water Pipelines." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/32337.

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For decades, cement mortar relining has been used successfully to extend the life of drinking water pipelines, although, few quantitative data exist on the short-term water quality impacts of this process. This study investigated mortar lining impacts on disinfectant by-product formation, alkalinity, metal leaching, pH and disinfectant consumption, and odor generation shortly after in-situ installation. The experimental design used a 30-day, coupon immersion procedure that simulated a relined 4-inch diameter pipe located in a low-flow system. Four water regimes were utilized; no disinfecta
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Mahajan, Rishab. "Quantitative assessment of exposure to enteric pathogens in drinking water." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1258472492.

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Smith, Sheryl Dianna. "The Influence of Water Quality on Arsenic Sorption and Treatment Process Performance." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33581.

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A new regulation has been proposed that would lower the acceptable level of arsenic in drinking water from the current standard of 50 ppb. Therefore, research into effective arsenic removal treatment is important, especially for hard to treat waters with high concentrations of silica. The first phase of research was designed to determine if sand ballasted coagulation is a viable means of removing arsenic from drinking water, and if so, to identify the water qualities in which the technology performs best. A jar test protocol was developed and tested on a wide range of waters to compar
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So, King-lung Benny, and 蘇景隆。. "A review of drinking water management in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31254366.

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