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Author: Brown and Caldwell
Publisher:
ISBN:
Category : Santa Cruz (Calif.)
Languages : en
Pages : 262
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Author: Brown and Caldwell
Publisher:
ISBN:
Category : Santa Cruz (Calif.)
Languages : en
Pages : 262
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Author: Kenneth S. Muir
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 44
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309181844
Category : Science
Languages : en
Pages : 57
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Book Description
The Water Science and Technology Board has released the first report of the Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks, which is studying water quality issues associated with public water supply distribution systems and their potential risks to consumers. The distribution system, which is a critical component of every drinking water utility, constitutes a significant management challenge from both an operational and public health standpoint. This first report was requested by the EPA, as the agency considers revisions to the Total Coliform Rule with potential new requirements for ensuring the integrity of the distribution system. This first report identifies trends relevant to the deterioration of drinking water quality in distribution systems and prioritizes issues of greatest concern according to high, medium, and low priority categories. Of the issues presented in nine EPA white papers that were reviewed by the committee, cross connections and backflow, new or repaired water mains, and finished water storage facilities were judged by the committee to be of the highest importance based on their associated potential health risks. In addition, the report noted that two other issues should also be accorded high priority: premise plumbing and distribution system operator training. This first report will be followed in about 18 months by a more comprehensive final report that evaluates approaches for risk characterization and identifies strategies that could be considered to reduce the risks posed by water-quality deteriorating events.
Author: California State University. Vice President - Physical Planning and Construction
Publisher:
ISBN:
Category : Campus planning
Languages : en
Pages : 134
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Author: Maria Fernanda Reyes Perez
Publisher: CRC Press
ISBN: 1351245260
Category : Science
Languages : en
Pages : 244
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Water resources in tourist islands have been severely threatened, especially in the Galápagos Islands, where the increased local population has generated attractive income from the tourist services. In addition, the data regarding water supply and demand are scarce. This study investigates water supply and demand in Santa Cruz, the most populated island of Galápagos. The research encompasses a thorough assessment of the water supply crisis, as well as the quantification of water demand from different categories (domestic, tourist, restaurants and laundries) through surveys, in the absence of water metering. Also, specific water demand was assessed by installing 18 water meters. The results yield a wide range of water consumption, questioning the current assumption of water scarcity. Furthermore, a prognosis of water supply and demand was carried out, and also several intervention strategies were proposed such as rainwater harvesting, greywater recycling, leakage reduction, water meter installation, water demand reduction, as well as seawater desalination to cope with the future population growth. Due to the fragility of the ecosystem, these strategies were assessed through a Multi-Criteria Decision Analysis, considering environmental, technical, economic and social aspects, as well as relevant stakeholders’ perspectives. finally, the water supply network of Puerto Ayora was evaluated in order to understand the need of the current intermittent supply regime. A methodology was developed to estimate the overflow of the domestic roof tanks (a common incidence amongst local population). The results question the practicality of individual household storage. The final results show that the current situation in terms of the lack of water quantity may not be real, as it has been thought for the last decades. The water issues refer more importantly to the water quality, as well as to the lack of proper water management practices.
Author: M.C. Yoder Associates
Publisher:
ISBN:
Category : Sebastopol (Calif.)
Languages : en
Pages : 73
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Author:
Publisher:
ISBN:
Category : Santa Cruz (Calif.)
Languages : en
Pages : 312
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Author: Patricia Pfremmer
Publisher:
ISBN:
Category : California
Languages : en
Pages : 96
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Author:
Publisher:
ISBN:
Category : Land use
Languages : en
Pages : 158
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Book Description
