ABSTRACT Domestic water use is one of India's primary water uses that also includes irrigation, industrial, and environmental water uses. However, there is a lack of reliable data that hinders the estimation of domestic water use in India. Previous large-scale assessments often estimated domestic water use using population alone as a predictor. Economic and technological development and the improvement

ABSTRACT Pipe leakage from defect subsurface gravity sewer pipe networks potentially contaminates soil and groundwater. In recent times, an increasing number of numerical pipe leakage models incorporating pipe flow, saturated-unsaturated flow in the subsurface, and exchange fluxes from and to leaky pipes have been developed. Numerical benchmarks are required in order to demonstrate result accuracy

ABSTRACT Urban flooding has become a national challenge in recent years due to a variety of socio-economic and environmental changes alongside rapid land use change in flood-prone areas. Losses from acute and chronic floods have become especially problematic in low-lying urban areas, where stormwater infrastructure deterioration, population growth, and development have accelerated over the last several

ABSTRACT Stormwater biofilters operate in alternating wet-dry cycles and subjects processes to distinct environmental conditions, particularly, moisture content. Pollutants in residual water may undergo chemical or biological transformation during the dry phase and affect pollutant removal. The study aims to analyse filter water content during dry-cycle. Ten Perspex bioretention columns (94 mm internal

ABSTRACT Understanding the driving forces of urban flood variations is important for better formulating future management strategies. This study explores the changes in urban drainage indicators (i.e., catchment area, imperviousness, pipe length and capacity) in historical urbanization and their impacts on urban flood from multiple spatio-temporal scales. By employing a GIS-based processing module

ABSTRACT The present study reports for the first time the occurrence of selected pharmaceuticals and personal care products (PPCPs) in the shallow aquifer underlying the Kraków city. Urban groundwater samples were gathered from 11 wells, which can serve as the emergency water supply wells. Liquid chromatography with tandem mass spectrometry method with the previous pre-concentration of samples using

ABSTRACT This paper presents a methodology to estimate free residual chlorine concentrations (FRCC) in full-scale water distribution system (WDS) using different degradation kinetics according to pipe material, age and diameter. Intensive field sampling campaigns and laboratory-scale tests were carried out to estimate total and bulk volume FRCC in three WDS. Bulk kinetic constants were estimated for

ABSTRACT Research into the benefits of digital water metering (DWM) identified many benefits that were previously unrevealed in the literature. Many benefits are tangible and more easily quantified. Others, like a possible change in customer satisfaction (CS), are not. The objective of this study was to quantify any potential changes to CS from switching from conventional meters to DWM. The findings

ABSTRACT The development of urbanization results in a marked increase in impervious areas, destroying the natural geological features and hydrological properties of the urban developed area. This may cause high risk of flooding, runoff pollution, and water shortages. An integral method is proposed to realize the multi-goals management of stormwater runoff, which called sponge city construction, and

ABSTRACT Mounting water demand due to population growth and rapid urbanization, increasing water usage and associated water wastages make Lahore vulnerable in the context of changing climatic conditions. Lahore Development Authority (LDA), the principle planning agency in the city, introduced rainwater harvesting (RWH) system for residential buildings through clause 5.6.6 of building and zoning regulations

(2021). Research on establishment of the region flood protection standard - a case of watershed of Dajiaxi, Taiwan. Urban Water Journal: Vol. 18, No. 3, pp. 173-182.

ABSTRACT In this study, by calibrating creep coefficients using two methods of creep function and transient pressure, the effect of Kelvin-Voigt elements on creep behavior and pressure fluctuations is investigated. The pressure error of different Kelvin-Voigt models shows that the accuracy of three and four-element models for pipes longer than 1000 m in the first method is higher than the second method

ABSTRACT A novel heuristic method for the optimal design of a looped Water Distribution Network (WDN) is proposed. The method is based on the determination of optimal paths that water will follow in a WDN. The new method does not have any parameters that need to be adjusted and does not require a penalty function. It progresses by constantly updating an initial solution, while it gathers information

ABSTRACT Rainwater Harvesting System (RWHS) can play a multipurpose role, contributing to the management of rainwater runoff, in addition to the water supply. This article assessed the potential reduction in stormwater runoff by adopting small-scale RWHS in the Brazilian semiarid region based on the Curve-Number (CN). RWHS could minimize runoff in frequency and volume, leading the built environment

ABSTRACT Water monitoring programs are essential tools for planning and management, but their associated costs can present challenges, especially in the developing world where funding is tight. This paper addresses the use of data mining techniques in the periodic review of monitoring programs by analyzing the capacity of these techniques to reduce the number of monitored variables. This methodology

ABSTRACT Assessing uncertainties of urban drainage models is important for their applications. While most attention in the literature was paid to large comprehensive models, little has been published about Low-Complexity Conceptual Models (LCCMs). This paper explores the uncertainties inherent to a conceptual, data-based proprietary model StormTac Web, simulating annual urban runoff quantity and quality

ABSTRACT Water quality management has increasingly been based on the adoption of risk management frameworks as defined by Water Safety Plans (WSP), through the World Health Organization Guidelines for Drinking-water Quality. The potential application of such frameworks in Chile has not been fully explored, therefore it is necessary to identify aspects of water quality management which are currently

ABSTRACT Urbanization can negatively affect residents’ health and wellbeing. Green stormwater infrastructure (GSI) is increasingly advocated as a win-win strategy for addressing multiple urban problems. Literature quantifying GSI benefits is growing, but it is unclear how it performs in arid and semi-arid cities. This study, co-designed with practitioner partners in Phoenix, Arizona, evaluates the

ABSTRACT In many parts of Europe, heavy precipitation events are expected to increase in frequency and intensity. Since the current state of pluvial flood protection is low, there is a need to increase public risk perception and to encourage mitigation behavior. Doing this is the goal of risk communication, which is increasingly taking place via social media. In order to assess the importance/potential

ABSTRACT The removal of heavy metal ions from stormwater runoff is a global issue. One of the critical solutions is the selection of innovative adsorbent used in stormwater bioretention systems. The potential use of water treatment residuals (WTRs) containing polyaluminium chloride and anionic polyacrylamide to remove divalent lead ions (Pb2+) and divalent copper ions (Cu2+) from stormwater was investigated

ABSTRACT Vietnamese cities are highly vulnerable to urban flooding as a consequence of climate change and rapid urbanisation. In this study, current and future pluvial urban flood hazard was assessed for Ha Tinh city. Climate scenarios were obtained after statistical downscaling by applying a quantile-perturbation approach on ensembles of 170 global and 20 regional climate models. Flood impact analysis

ABSTRACT Vietnamese cities are highly vulnerable to urban flooding as a consequence of climate change and rapid urbanisation. In this study, current and future pluvial urban flood hazard was assessed for Ha Tinh city. Climate scenarios were obtained after statistical downscaling by applying a quantile-perturbation approach on ensembles of 170 global and 20 regional climate models. Flood impact analysis

ABSTRACT The partition of complex Water Distribution Systems (WDSs) is required in order to simplify and facilitate the routine cumbersome management tasks. As a representative community detection algorithm, the Fast-Newman Algorithm (FNA) can efficiently partition the network into District Metered areas (DMAs) based on the modularity index. However, only the topological attribute is considered in

ABSTRACT Today, urban stormwater management is moving towards Stormwater Control Measures (SCMs) that encourage water storage and infiltration to reduce urban runoff and contaminant transfer. Modelling tools are required to quantify SCMs benefits at catchment scale. Based on an original method of land cover representation in a rainfall-runoff model, this paper aims at assessing the impacts of permeable

ABSTRACT Local real-time control (RTC) represents a potentially cost-effective solution for stormwater management in urban drainage systems. Existing methodologies to select the location of flow control devices (FCDs) are limited to single gate systems and are based on analysis of activated storage volume capacity, without considering hydrodynamic processes or rainfall characteristics. In this paper

ABSTRACT Stormwater Control Measures (SCMs) are increasingly applied to capture and utilise urban runoff to augment water supply, reduce flood risk, and to restore natural flow regimes in receiving waters. New advances in Real-Time Control (RTC) technology offer the potential to dynamically optimise SCM performance to meet multi-objectives, without the need for major structural upgrades. This paper

ABSTRACT Urban Evapotranspiration (ET) plays a crucial role in controlling irrigation water demand. The estimation of urban ET is difficult because of high spatial variability of urban surfaces. This paper reviews the two most commonly used approaches pertaining to advancements, limitations, and opportunities in arid regions. The two approaches include the landscape coefficient and surface energy balance

ABSTRACT We examined the performance of ecoroofs with different substrate depths (75 mm, 125 mm) as well as a conventional roof using rainfall and runoff data collected between 2014 and 2017 in Portland, Oregon, USA. The two ecoroof plots exhibited similar effectiveness in retaining storm runoff across all storm size categories, and both ecoroofs retained the most stormwater during small storms. Retention

ABSTRACT Understanding the water metabolism of developing country cities is challenging because of insufficient knowledge of how social, infrastructural and hydrological dimensions are coupled. Using Bengaluru City in India, we demonstrate how fine-resolution data can inform model-based estimates of urban groundwater budgets. Groundwater levels were measured at 154 locations in 2016 and used to estimate

ABSTRACT A few studies on urban water management have engaged in identifying Sustainable Urban Water Management (SUWM) barriers. Most of these studies proposed many strategies to address them. However, for a developing country like the Philippines, it is impractical to employ all of them at once, especially when resources are scarce. Furthermore, due to the system complexity, conventional analysis

ABSTRACT Palladium (Pd) is widely used in the production of automotive catalytic converters that serve to reduce toxic emissions from motor vehicles. The aim of this study was to explore the transport of Pd in the urban water environment. The results showed that the amounts of transported Pd in the pollution chain followed the order of rainfall runoff > estuary > receiving water body > wet deposition

ABSTRACT The paper discusses results of the long-term monitoring of a full-scale pilot installation of a modular tray-based blue roof (BR) system for the control of the runoff from the roof terrace of a building in the campus of the University of Catania (Italy). The BR was installed in one catchment of the rooftop while another symmetrical catchment was left unmodified and monitored to allow comparison

ABSTRACT As water resources become increasingly scarce, manufacturers in high-water-consumption (HWC) industries are trying to seek water-saving services (WSS) from a WSS provider to reduce water consumption in the product-manufacturing/service-providing process. In this context, the game-theoretical decision models for dual competing HWC manufacturers under the scenario without/with WSS are developed

ABSTRACT This paper reports a monitoring and modeling of the occurrence of metals in a WWTP inflow, identifying the different sources of metals in domestic, commercial/industrial wastewater and surface runoff, using the software SWMM. The developed model explained very well the hydraulic data, with errors around 1% in relation to the calibration dataset and 4% to the validation one. When explaining

ABSTRACT Different policy mechanisms to encourage private property developers to adopt sustainable drainage features have been tried in many countries with moderate success. Singapore’s ABC Waters Programme encourages the adoption of sustainable drainage by private developers through certification amongst others. However, this has not been implemented by all developers uniformly. Therefore, using Singapore

ABSTRACT Due to the global climate change and the substantial increase in impervious area, ‘never flooding’ becomes an unrealistic goal. From the perspective of integrated flood management, the government and public need to reach a consensus on disasters and disaster response, and set a reasonable regional protection standard for the city to jointly respond to disasters. This study establishes an operable

ABSTRACT This work proposes a modeling framework to quantify the effects of deliberate organic contamination events on water distribution systems. A bacterial regrowth model and a first parallel chlorine decay model were combined to describe the biochemical water species kinetics during a deliberate contaminant injection consisting of organic (TOC) and bacterial loads. Several attacks were modeled

ABSTRACT Urban Evapotranspiration (ET) plays a crucial role in controlling irrigation water demand. The estimation of urban ET is difficult because of high spatial variability of urban surfaces. This paper reviews the two most commonly used approaches pertaining to advancements, limitations, and opportunities in arid regions. The two approaches include the landscape coefficient and surface energy balance

ABSTRACT A few studies on urban water management have engaged in identifying Sustainable Urban Water Management (SUWM) barriers. Most of these studies proposed many strategies to address them. However, for a developing country like the Philippines, it is impractical to employ all of them at once, especially when resources are scarce. Furthermore, due to the system complexity, conventional analysis

ABSTRACT Understanding the water metabolism of developing country cities is challenging because of insufficient knowledge of how social, infrastructural and hydrological dimensions are coupled. Using Bengaluru City in India, we demonstrate how fine-resolution data can inform model-based estimates of urban groundwater budgets. Groundwater levels were measured at 154 locations in 2016 and used to estimate

ABSTRACT Accurate model-based forecasts (discharge and water level) are considered significant for efficient planning and management of urban drainage systems. These model-based predictions can be improved by assimilating system measurements in physically based, distributed, 1D hydrodynamic urban drainage models. In the present research, a combined filtering and error forecast method was applied for

ABSTRACT The paper industry wastewater even after bio-treatment at industrial scale is a major source of aquatic and soil pollution due to various unknown compounds. Hence, the study has focused on the detection of residual organic pollutants from the bleached and unbleached paper mill wastewater and both sources showed endocrine-disrupting compounds. The toxicity test with Phaseolus aureus seed germination

ABSTRACT In water distribution networks, pressure-head at a demand node more than what is required to satisfy the demand is considered as surplus. But, it cannot be completely taken as surplus. Because excess pressure-head at a node is essential to compensate the head-losses in the off-taking links so as to maintain the pressure-head required at downstream nodes. Also, in the recent years, attention

ABSTRACT Applying behavioural science to complex issues, like water demand management, requires behaviour prioritisation for focused program design. This requires tools and data to support decision-making. Some sectors obtain expert-derived data to fill gaps for statistical modelling. However, there is an ongoing debate over use of expert, versus lay, stakeholder perspectives. We extend previous research

ABSTRACT Identification of flood hazards allows planning the cities layout or flood protection infrastructure appropriately. Flood maps showing flow depths and velocities are not enough to assess hazards to people, because such hazards depend on factors producing equilibrium loss in pedestrians crossing flooded streets. An experimental facility was used considering typical street geometry in Mexico

ABSTRACT This paper presents a case study on the economic feasibility analysis of rainwater harvesting in single-family houses located in Imbituba, Brazil. A base case scenario was chosen and 108 scenarios were evaluated considering different roof areas, number of residents, potable water and rainwater demands. All scenarios were assessed by means of computer simulations. The payback period for the

ABSTRACT Rainwater tanks or cisterns are a low impact development infrastructure used to control stormwater runoff and reduce water demand. However, climate change may affect its performance due to increased rainfall intensities. This study evaluates the uncertainty on the effectiveness of cisterns to reduce peak runoff under climate change in an urban watershed in Brazil. Twelve updated intensity-duration-frequency

ABSTRACT Identification of flood hazards allows planning the cities layout or flood protection infrastructure appropriately. Flood maps showing flow depths and velocities are not enough to assess hazards to people, because such hazards depend on factors producing equilibrium loss in pedestrians crossing flooded streets. An experimental facility was used considering typical street geometry in Mexico

ABSTRACT Water is a vital resource required to sustain life yet citizens do not always have access to portable water. We argue that urban water systems are complex dynamic systems consisting flows and feedbacks that disrupt or enhance their function. We employed the mixed-method research design grounded in phenomenological and survey approaches. The applied systems analysis methodology enabled analysis

ABSTRACT In India, many major and medium reservoirs have been constructed to meet the fast-growing demands of irrigation, hydropower generation, drinking and industrial water supply. To achieve social and economic sustainability in water scarce areas, it is vital to efficiently manage available water resources. Indeed, water resources systems are complex and require systematic study to facilitate optimal

ABSTRACT Climate change impact analysis in urban hydrology involves downscaling of coarse climate model outputs. This study evaluates the downscaling skill of four change factor methods for impact analysis on urban hydrology in Belgium. The downscaling methods are applied to precipitation observations. For this, the 100-year Uccle time series is split in observations, in pseudo-climate model runs and

ABSTRACT This study presents a data-driven system analysis approach intended to improve greywater reuse at the household/community level using a case study of ¨Granular Activated Carbon-Membrane Integrated-Multigrade Effluent¨(GAC-MI-ME) treatment system. It consists of a matrix of advanced filtration units and provides multi-grade water reuse options. Using experimental data with varying greywater

ABSTRACT An increasing interest in retrofitting rooftops as green roofs require improved understanding of the impact on runoff within urban catchments. In this study, a model of Risvollan, an urban catchment in the coastal city of Trondheim, Norway was built using the PCSWMM (Storm Water Management Model) model version 7.2.2780. Rooftops in the catchment were retrofitted as green (vegetated) or grey

ABSTRACT Managing pipe breaks in water supply networks has been a challenge for water utilities around the world. In order to transform from reactive to proactive management of pipe breaks, South Australia Water Corporation (SA Water) has invested more than 4 million dollars to set up a Smart Water Network (SWN), in the central business district (CBD) of Adelaide. The network includes 305 permanent

ABSTRACT Increased precipitation, ageing infrastructure, and rising surface water levels have exacerbated stormwater issues in the city of Detroit, causing combined sewer overflows and basement flooding. Green stormwater infrastructure (GSI) is now a requirement of the city as part of its stormwater discharge permit to decrease stormwater system overflows. While GSI has been shown to improve water

(2020). Water systems modelling, data and control. Urban Water Journal: Vol. 17, Water systems modelling, data and control, pp. 681-681.

ABSTRACT Cities increasingly face challenging regulatory requirements for their aging sewer systems. Population density and can contribute to changes in impervious cover that limit infiltration, expedite the rate of water drainage, and overwhelm the conveyance system. This work presents a method for applying high-spatial resolution population-based scenarios to pre-existing stormwater models. We explore

ABSTRACT Water Shortage Risk (WSR) map is a tool to establish priorities to take actions in the management of Urban Water Supply Systems (UWSS). This work presents a methodology combining elements of Multi-Criteria Decision Analysis (MCDA) and Geographic Information Systems (GIS) to assess urban water shortage levels. The study case is Campina Grande, a Brazilian city which represents other cities

ABSTRACT Surface drainage systems play a key role in the urban system. To assess the flow intercepted by inlets, some approaches use recent experimental campaigns or are based on orifice or weir formulas. In this work, real scale experimental campaigns are used to define discharge coefficients to provide information for practitioners and inlet manufacturers. Tested discharge values range between 25–200 l/s

ABSTRACT Runoff entering urban drainage systems contains suspended solids, which carry pollutants and may cause blockages in downstream parts of the system (for example infiltration facilities). Suspended solids inflow should, therefore, preferably be controlled by solids removal at gully pots. This paper presents the results of lab experiments on the solids accumulation in gully pots in a scale 1:1