The importance of water as a mechanism for the spread of disease is well recognized. This study conducted household surveys and measured several physical, chemical, and microbial water quality indicators in 37 elevated storage tanks constructed of different materials (polyethylene, fiberglass, cement) located in a peri-urban community near Cochabamba, Bolivia. Results show that although there is no significant difference in physical and chemical water quality between polyethylene, fiberglass and cement water storage tanks there is a difference in microbial contamination as measured by E. Coli counts (p = 0.082). Evidence points toward elevated water temperatures that increase along the distribution system (from 10.6°C leaving the treatment plant) to within the black polyethylene storage tank (temperatures as high as 33.7°C) as the most significant factor in promoting bacterial growth. Results indicate that cleaning frequency may also contribute to microbial water quality (p = 0.102).
|Advisor:||Mihelcic, James R.|
|Commitee:||Trotz, Maya, Wells, E. Christian|
|School:||University of South Florida|
|Department:||Civil and Environmental Engineering|
|School Location:||United States -- Florida|
|Source:||MAI 49/03M, Masters Abstracts International|
|Keywords:||Developing country, Drinking water, E. coli, Peri-urban, Storage tank materials|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be