How do citizens feel about their water services in the water sector? Evidence from the UK

At present, many studies have used social survey methods to explore UK water citizens’ perceptions of the water sector’s water services, but there are few more targeted and systematic studies. This paper mainly displays the perceptions of UK water citizens on water services in the water sector in recent years and analyses the main reasons for different perceptions and possible strategies. We conduct extensive research from four aspects that are highly related to water services: water citizens’ perceptions of the water supply services and technology application (infrastructure construction) provided by the water sector; the state of communication between the water sector and water citizens and their perceptions of water supply management; water citizens’ perceptions of the comprehensive utilisation of water resources in the water sector; water citizens’ perceptions of the water prices set by the water sector. These discussions aim to discover citizens’ perceptions of the water sector and the effects on the public participation mechanism. These insights help attract the water sector’s attention so that the public’s opinions can genuinely support water policymakers and provide sure support for the water sector to formulate corresponding solutions.

The cistern-system of early modern Venice: technology, politics and culture in a hydraulic society

At a time when European cities depended on three sources of fresh water for their domestic and industrial needs—rivers, spring-fed aqueducts and groundwater wells—early modern Venice added a fourth possibility: a dense network of cisterns for capturing, filtering and storing rainwater. Venice was not unique in relying on rainwater cisterns; but nowhere in Italy (indeed in Europe) was the approach so systematic and widespread, the city concerned so populous, the technology so sophisticated and the management so carefully regulated as in the lagoon city. To explore Venice’s cistern-system, a range of primary sources (medical treatises, travellers’ accounts, archival records) and the contributions of architectural, medical and social historians, and archaeologists are analysed. The article examines the system’s functioning and management, including the role of the city’s acquaroli or watermen; the maintenance of freshwater quality throughout the city, in the context of broader sanitation measures; and the place of the “wells” and fresh water in daily life in Venice. As a means of teasing out the myriad links between nature, technology and society in early modern Italy, the article concludes with a brief comparison of the politics of water supply management in the very different urban realities of (republican) Venice, (viceregal) Naples and (papal) Rome.

Protecting a displaced species in an altered river: a case study of the endangered Sacramento River winter-run Chinook Salmon

Endangered Sacramento River winter-run Chinook Salmon (Oncorhynchus tshawytscha) exist as a single population that spawns in the Sacramento River downstream of Shasta Dam near Redding, CA. Displaced from their historical habitat after dam construction circa 1940, their survival depends on cold water released from Shasta Reservoir. Managing and recovering the species is further complicated by their anadromous life history, habitat loss and degradation, largescale water supply management, and climate change. The California Department of Fish and Wildlife and other resource agencies coordinate closely to protect the species from extinction, confronting challenges with collaborative restoration and science-driven management. As climate change brings more frequent droughts, warmer weather, and increased variability in precipitation, Sacramento River winter-run Chinook Salmon recovery will require greater collaboration and a shift to more holistic restoration actions that promote and maintain the diversity and resilience of the species and its habitats.

A REVIEW ON SMART CITIES BASED ON IOTTECHNOLOGY

In an IOT based smart city various component like smart water supply management, traffic light control, street lightning system and many more systems are make a city to a smart city. In a smart city allthe necessary facilities such as transportation, water, energy and security etc. related issue can be solving in easy way and the community and people provide a healthy and safety environment. The world is moving forward at a fast with increasing technology in recent time. Thus, a lot of safety issues in all parts of world. So, in this paper mainly focus to provide a well deserved life of all the persons living in the cities. Generally the smart cities definition depends on geographical, environmental andeconomical.

Usage of IoT Framework in Water Supply Management for Smart City in Nepal

An efficient water supply management system can be one of the applications of the Internet of Things (IoT). Water is a basic physiological need, and smart management of water plays a significant role in a smart city. This paper focuses on a mathematical model and IoT framework that aid in developing a smart city. A framework is developed for water supply management. The efficiency of the water supply can be measured by monitoring leakage conditions, overflow of water, automatic meter reading and online bill payments, and water consumption status of households, community, state, and eventually the whole country as well as the automatic water supply line cut-off. The system where the IoT is being deployed consists of embedded hardware in which sensors and microcontrollers provide messages and gain feedback from each other with the help of the internet, and this process can not only be monitored but also can be controlled from a remote location. The developed framework addresses all these aspects and mathematical equations are used and formulated while developing the IoT application. The mathematical equations are concentrated on consumption level (CL), leakage reporting (LR), and bill amount (BA) based on consumption. These become the point of contact for deploying IoT and eventually a framework is developed. This framework can be useful not only in water supply management but also in the management of road traffic, pollution, garbage, home automation and so on. In a nutshell, this paper illustrates the usage of the IoT framework in water supply management which contributes to developing the smart city.

Iran Drought Monitoring in April 2021

About a third of the world's continents and large parts of Iran are facing drought, which is hampering water supply and water supply management. The problem of drought is a natural phenomenon that causes water shortages in many countries every year. Currently, about 80 countries are located in arid and semi-arid regions of the world and Iran is one of these countries with an average rainfall of about 250 mm. In this study, a new drought index called OMI based on GRACE-FO total water storage (TWS) observations is developed in April 2021. The northern and northwestern regions of Iran have lost about 0.32 meters of TWS. Central and eastern Iran have lost about 0.18 meters of TWS. The southwestern regions of Iran are in a better situation this month than other regions. The eastern and southeastern regions are very mid drought, the northern, northeastern, and northwestern regions are very severe drought. The southeastern areas are moderately drought.

Investigation of Hydrochemical Parameters of Water Resources in Kamarderaz Anticline Plunge in the Southwest of IRAN

Changes in the quality of karstic water resources affected by the proximity to sources of salinity such as evaporate formations and oil brine pose major challenges to such water resources, especially in Khuzestan province, Iran. The karstic water resources of the Kamarderaz anticline plunge in Izeh city in Khuzestan province have hampered water supply management in the region. To determine water quality and the causes of water salinity in the study area, the hydrochemical parameters of the existing water resources were accordingly evaluated. To conduct hydrochemical studies, 21 samples were collected from different water sources of Kamarderaz anticline plunge in 2017–2018. To analyze the garnered data, Piper and Durov diagrams, composite graphs, ion exchange graphs, ion correlation diagrams, salinity source diagrams and ion ratios were used. The results showed that SO42−, Cl−, and Ca2+ in the water resources of the study area were likely due to several sources including carbonate minerals, gypsum dissolution, anhydrite, halite as well as oil brine. Besides, Br/Cl, I/Cl ion ratios as well as Br-Cl and SO4-Cl diagrams revealed the mixing of karstic freshwater with oil brine in the region. The result of TOC analysis also showed that hydrocarbon materials were present in the well of Atabaki (WT). Moreover, elemental sulfur and sulfur isotope analysis showed that the process of thermochemical sulfate reduction or bacterial sulfate reduction in the presence of hydrocarbons produced H2S gas, and eventually penetrated the WT and WH1.