scholarly journals Tap water isotope ratios reflect urban water system structure and dynamics across a semiarid metropolitan area

2016 ◽  
Vol 52 (8) ◽  
pp. 5891-5910 ◽  
Author(s):  
Yusuf Jameel ◽  
Simon Brewer ◽  
Stephen P. Good ◽  
Brett J. Tipple ◽  
James R. Ehleringer ◽  
...  
Keyword(s):  
Metropolitan Area ◽  
Tap Water ◽  
Water System ◽  
Isotope Ratios ◽  
System Structure ◽  
Urban Water ◽  
Structure And Dynamics ◽  
Urban Water System ◽  
Water Isotope

scholarly journals Isotopes from the Tap Reveal Urban Water System Dynamics

Eos ◽  
2016 ◽  
Vol 97 ◽  
Author(s):  
Sarah Stanley
Keyword(s):  
Water Management ◽  
System Dynamics ◽  
Environmental Stress ◽  
Household Income ◽  
Tap Water ◽  
Water System ◽  
Urban Water ◽  
Urban Water System

Tracking isotope patterns in tap water also reveals metropolitan water management choices, population ranges, episodes of environmental stress, and even information on household income.

scholarly journals Managing Apparent Loss and Real Loss from the Nexus Perspective Using System Dynamics

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 231
Author(s):  
Seo Hyung Choi ◽  
Bongwoo Shin ◽  
Eunher Shin
Keyword(s):  
System Dynamics ◽  
Water Loss ◽  
Management Strategies ◽  
Water System ◽  
Economic Feasibility ◽  
Water Utilities ◽  
Urban Water ◽  
Water Losses ◽  
Urban Water System ◽  
Apparent Loss

When water utilities establish water loss control programs, they traditionally focus on apparent loss rather than real loss when considering economic feasibility in the water sector. There is an urgent need for new management approaches that can address complex relationships and ensure the sustainability of natural resources among different sectors. This study suggests a novel approach for water utilities to manage water losses from the water-energy (WE) Nexus perspective. The Nexus model uses system dynamics to simulate twelve scenarios with the differing status of water loss and energy intensities. This analysis identifies real loss as one of the main causes of resource waste and an essential factor from the Nexus perspective. It also demonstrates that the energy intensity of each process in the urban water system has a significant impact on resource use and transfer. The consumption and movement of resources can be quantified in each process involved in the urban water system to distinguish central and vulnerable processes. This study suggests that the Nexus approach can strongly contribute to quantifying the use and movement of resources between water and energy sectors and the strategic formulation of sustainable and systematic water loss management strategies from the Nexus perspective.

scholarly journals Stress-Testing Framework for Urban Water Systems: A Source to Tap Approach for Stochastic Resilience Assessment

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 154
Author(s):  
Dionysios Nikolopoulos ◽  
Panagiotis Kossieris ◽  
Ioannis Tsoukalas ◽  
Christos Makropoulos
Keyword(s):  
Water Distribution ◽  
Stress Testing ◽  
Water Cycle ◽  
Water System ◽  
Operating Conditions ◽  
Distribution Model ◽  
Generation Model ◽  
Urban Water ◽  
Testing Framework ◽  
Urban Water System

Optimizing the design and operation of an Urban Water System (UWS) faces significant challenges over its lifespan to account for the uncertainties of important stressors that arise from population growth rates, climate change factors, or shifting demand patterns. The analysis of a UWS’s performance across interdependent subsystems benefits from a multi-model approach where different designs are tested against a variety of metrics and in different times scales for each subsystem. In this work, we present a stress-testing framework for UWSs that assesses the system’s resilience, i.e., the degree to which a UWS continues to perform under progressively increasing disturbance (deviation from normal operating conditions). The framework is underpinned by a modeling chain that covers the entire water cycle, in a source-to-tap manner, coupling a water resources management model, a hydraulic water distribution model, and a water demand generation model. An additional stochastic simulation module enables the representation and modeling of uncertainty throughout the water cycle. We demonstrate the framework by “stress-testing” a synthetic UWS case study with an ensemble of scenarios whose parameters are stochastically changing within the UWS simulation timeframe and quantify the uncertainty in the estimation of the system’s resilience.

PLANNING URBAN WATER SYSTEM RESPONSES TO MEGADROUGHT

2019 ◽  
Vol 4 (3) ◽  
pp. 1-11
Author(s):  
Danielle Verdon-Kidd ◽  
Russell Beatty ◽  
Kathryn Allen
Keyword(s):  
Water System ◽  
Urban Water ◽  
Urban Water System

The Water Mandarins: The Contradictions of Urban Water Provision

2004 ◽  
Author(s):  
Erik Swyngedouw
Keyword(s):  
Urban Population ◽  
Water Distribution ◽  
Tap Water ◽  
Water System ◽  
Field Research ◽  
Intermittent Flow ◽  
Urban Water ◽  
Investment Planning ◽  
Water Company ◽  
Water Provision

Billions of litres of water flow through the centre of Guayaquil each day, as the Rivers Daule and Babahoyo converge to form the River Guayas. Given this fact, it is perplexing to find that 35% of the inhabitants of the city do not have access to adequate and reliable water supplies and the whole city suffers from chronic absolute water shortages. In this and the next chapter, we shall explore the contradictions of urban water provision, which result in a sizeable part of the urban population, invariably the poorer end of the social spectrum, not having access to piped potable water. This situation, in turn, makes them easy victims of water speculators, the private water sellers that distribute water in non-serviced areas by means of tankers. In Guayaquil, approximately 400 tankers service a population of half a million people, or approximately 35% of the total urban population. These water-merchants buy water at a highly subsidized price (70 sucres/m3),while they sell it for up to 6,500 sucres/m3 (November 1993), a price of up to 300 times higher than that paid by low-volume consumers who receive water from the water company. We will also explore the strategies and structure of the water company, infrastructure and investment planning, price mechanisms and control structures in the light of these exclusionary and disempowering mechanisms of the existing water system. In short, we shall explore the contradictory dynamics of the ‘Water Mandarins’. The complex networks of those that hold control over the water tap, water infrastructure, and water distribution will be excavated in order to unearth the relations of power that infuse and eventually organize the intermittent flow of water in Guayaquil. Of course, analysing the changing dynamics of water supply in Guayaquil is like trying to hit a moving target. The field research for this book was completed in 1998. Since then, the public water company has awarded a concession to International Water Services, a Dutch-based subsidiary of Bechtel and Edison Spa, to operate, administer, and expand Guayaquil’s water and sewage services and infrastructure (see below).

Coordination Degree Assessment Model for Regional Industrial Water Utilization Structure

2014 ◽  
Vol 955-959 ◽  
pp. 3343-3346
Author(s):  
Jing Chen ◽  
Da Wei Yan
Keyword(s):  
Economic Benefit ◽  
Environmental Effect ◽  
Water System ◽  
Assessment Model ◽  
Urban Water ◽  
Industrial Water ◽  
Water Utilization ◽  
Urban Water System ◽  
Set Up ◽  
Coordination Degree

More reasonable management for water resources use may be critical to survive water crisis and realize sustainable development of urban-water system. This work attempts to set up a assessment model for regional industrial water utilization structure based on synergetics theory and grey method. In this model, both economic benefit and environmental effect are considered.

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