Integrated risk assessment and screening analysis of drinking water safety of a conventional water supply system

2007 ◽  
Vol 56 (6) ◽  
pp. 47-56 ◽  
Author(s):  
F. Sun ◽  
J. Chen ◽  
Q. Tong ◽  
S. Zeng
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Water Supply Systems ◽  
Assessment Procedure ◽  
Water Safety ◽  
Screening Analysis ◽  
Drinking Water Safety

Management of drinking water safety is changing towards an integrated risk assessment and risk management approach that includes all processes in a water supply system from catchment to consumers. However, given the large number of water supply systems in China and the cost of implementing such a risk assessment procedure, there is a necessity to first conduct a strategic screening analysis at a national level. An integrated methodology of risk assessment and screening analysis is thus proposed to evaluate drinking water safety of a conventional water supply system. The violation probability, indicating drinking water safety, is estimated at different locations of a water supply system in terms of permanganate index, ammonia nitrogen, turbidity, residual chlorine and trihalomethanes. Critical parameters with respect to drinking water safety are then identified, based on which an index system is developed to prioritize conventional water supply systems in implementing a detailed risk assessment procedure. The evaluation results are represented as graphic check matrices for the concerned hazards in drinking water, from which the vulnerability of a conventional water supply system is characterized.

DEVELOPMENT AND IMPLEMENTATION OF A WATER SAFETY PLAN FOR THE DRINKING WATER SUPPLY SYSTEM OF FLORENCE, ITALY

2020 ◽  
Vol 19 (10) ◽  
pp. 1813-1822
Author(s):  
Cecilia Caretti ◽  
Roberta Muoio ◽  
Leonardo Rossi ◽  
Daniela Santianni ◽  
Claudio Lubello ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Drinking Water Supply ◽  
Water Safety ◽  
Safety Plan ◽  
Water Safety Plan ◽  
Drinking Water Supply System

scholarly journals Sustainability characteristics of drinking water supply

2020 ◽  
Author(s):  
Jolijn van Engelenburg ◽  
Erik van Slobbe ◽  
Adriaan J. Teuling ◽  
Remko Uijlenhoet ◽  
Petra Hellegers
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Demand ◽  
Supply System ◽  
Water Supply System ◽  
Drinking Water Supply ◽  
Extreme Weather Events ◽  
Water Supply Systems ◽  
Global Issues ◽  
Drinking Water Supply System

Abstract. Developments such as climate change and growing demand for drinking water threaten the sustainability of drinking water supply worldwide. To deal with this threat, adaptation of drinking water supply systems is imperative, not only on a global and national scale, but particularly on a local scale. This investigation sought to establish characteristics that describe the sustainability of local drinking water supply. We use an integrated systems approach, describing the local drinking water supply system in terms of hydrological, technical and socio-economic characteristics that determine the sustainability of a local drinking water supply system. Three cases on drinking water supply in the Netherlands are analysed. One case relates to a short-term development, that is the 2018 summer drought, and two concern long-term phenomena, that is, changes in water quality and growth in drinking water demand. The approach taken recognises that next to extreme weather events, socio-economic developments will be among the main drivers of changes in drinking water supply. Effects of pressures associated with, for example, population growth, industrial developments and land use changes, could result in limited water resource availability, deteriorated groundwater quality and growing water demand. To gain a perspective on the case study findings broader than the Dutch context, the sustainability issues identified were paired with global issues concerning sustainable drinking water supply. This resulted in a proposed set of generally applicable sustainability characteristics, each divided into five criteria describing the hydrological, technical and socio-economic sustainability of a local drinking water supply system. Elaboration of these sustainability characteristics and criteria into a sustainability assessment can provide information on the challenges and trade-offs inherent in the sustainable development and management of a local drinking water supply system.

scholarly journals Large waterborne Campylobacter outbreak: use of multiple approaches to investigate contamination of the drinking water supply system, Norway, June 2019

2020 ◽  
Vol 25 (35) ◽  
Author(s):  
Susanne Hyllestad ◽  
Arild Iversen ◽  
Emily MacDonald ◽  
Ettore Amato ◽  
Bengt Åge Sørby Borge ◽  
...  
Keyword(s):  
Water Supply ◽  
Weather Conditions ◽  
Acute Onset ◽  
Case Definition ◽  
Supply System ◽  
Water Supply System ◽  
Control Measures ◽  
Water Supply Systems ◽  
Water Safety ◽  
Drinking Water Supply System

On 6 June 2019, the Norwegian Institute of Public Health was notified of more than 50 cases of gastroenteritis in Askøy. A reservoir in a water supply system was suspected as the source of the outbreak because of the acute onset and geographical distribution of cases. We investigated the outbreak to confirm the source, extent of the outbreak and effect of control measures. A case was defined as a person in a household served by Water Supply System A (WSS-A) who had gastroenteritis for more than 24 h between 1 and 19 June 2019. We conducted pilot interviews, a telephone survey and an SMS-based cohort study of residents served by WSS-A. System information of WSS-A was collected. Whole genome sequencing on human and environmental isolates was performed. Among 6,108 individuals, 1,573 fulfilled the case definition. Residents served by the reservoir had a 4.6× higher risk of illness than others. Campylobacter jejuni isolated from cases (n = 24) and water samples (n = 4) had identical core genome MLST profiles. Contamination through cracks in the reservoir most probably occurred during heavy rainfall. Water supply systems are susceptible to contamination, particularly to certain weather conditions. This highlights the importance of water safety planning and risk-based surveillance to mitigate risks.

scholarly journals Determining Hazards’ Prevention Critical Control Points in Water Supply Systems

2020 ◽  
Vol 2 (1) ◽  
pp. 53 ◽  
Author(s):  
Stavroula Tsitsifli ◽  
Vasilis Kanakoudis
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Drinking Water Supply ◽  
Water Supply Systems ◽  
Control Points ◽  
Critical Control Points ◽  
Drinking Water Supply System ◽  
Supply Systems

A drinking water supply system is an extraordinarily complex system—consisting of kilometers of pipes and various tanks, valves, pumps, and other equipment. This complexity makes it extremely vulnerable to physical, chemical, and/or biological hazards. Therefore, the vulnerability assessment of a drinking water supply system to identify the critical control points is absolutely necessary. This paper assesses the vulnerability of the drinking water supply systems. The assessment is elaborated in systems using water from surface water bodies and groundwater bodies. The critical control points are identified using a risk assessment methodology (identifying the probability of the hazard occurrence and its effect or severity) where the monitoring parameters, and the corrective actions are determined.

Water safety plans at EPAL's water supply system-tool to prioritize investments and mitigation actions

2015 ◽  
Vol 15 (5) ◽  
pp. 1106-1114 ◽  
Author(s):  
R. N. Carneiro ◽  
S. Damião ◽  
M. J. Benoliel
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Capital Investments ◽  
Water Safety ◽  
Integrated Risk ◽  
Critical Issues ◽  
Water Safety Plan ◽  
Individual Asset

In 2007, EPAL – Empresa Portuguesa das Águas Livres, S.A. – started to implement a water safety plan (WSP) in its water supply system, from source to tap, following the international methodologies regarding risk management of water quality. Since the implementation of its first version of the WSP, EPAL has been working on the optimization of its methodology regarding identification and evaluation of hazards/hazardous events and risk assessment. The main objective of this optimization is the prioritization of capital investments and implementation of mitigation actions, within the integrated risk-based management of the company. For this purpose, the initial risk assessment matrixes were optimized with the integration of new specific multicriteria tools to evaluate risks associated with different types of operational assets. The final risk assessment took into account the strategic importance of each individual asset within EPAL's supply system. The new risk assessment methodologies have helped decision-making and prioritization of capital investments and also allowed EPAL to better pinpoint the critical issues to address in its supply system.

scholarly journals Pendekatan Komunitas dan Komunikasi Sosial pada Pengembangan Sistem Penyediaan Air Minum (SPAM) (Community and Social Communication Approaches on Development of Water Supply System)

2009 ◽  
Vol 3 (3) ◽  
Author(s):  
Ninuk Purnaningsih
Keyword(s):  
Drinking Water ◽  
Local Government ◽  
Water Supply ◽  
Social Communication ◽  
Local Level ◽  
Development Program ◽  
Supply System ◽  
Water Supply System ◽  
Local People ◽  
Water Supply Systems

The government of Indonesia is obliged to provide continuous supply of drinking water in good quality to the people so that they can live well and productive. Under the framework of local autonomy regime, all physical development efforts, including sufficing drinking water, done at local level must be the responsibility of the local government together with civil society. Therefore, local community is expected to actively involve in the formulation of drinking water development program. Community-based and social communication approaches oriented toward local empowerment are chosen as primary strategy to achieve the development of water supply system. Social communication approach occurs in the form of social advocacy in the policy-making processes so that the policy becomes more sensitive to the needs of the local people. It is expected that by doing so the policy will be supportive to the need of local people. This article is to analyze the development of drinking water supply systems managed by government and NGOs as well as with local people. Some of them are not sustainable in terms of its policy processes continuity. The study reveals that such situation occurs due to less participation or support of local citizens and inappropriate local government policy supporting toward the program. This paper intends to elaborate more on the topics of community and social communication approaches relating to the development of water supply system.

scholarly journals Risk assessment and management in domestic water supply system in Pleiku city – Gia Lai province

2019 ◽  
Vol 17 (6) ◽  
pp. 50
Author(s):  
Anh Nguyễn Tuấn ◽  
Kỳ Nguyễn Minh ◽  
Hải Nguyễn Ninh
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Treatment Plant ◽  
Supply System ◽  
Water Supply System ◽  
Water Supply Systems ◽  
Pipeline System ◽  
Domestic Water ◽  
Supply Systems ◽  
Domestic Water Supply

Water is essential for maintaining life, ensuring a safe and continuous supply of water, therefore, it should be given the priority for concerns. Developing countries often face a number of problems with domestic water supply systems such as treatment plants with old technologies, degraded equipment leading to inefficient treatment, and a network of degraded piping, which could cause re-pollution of treated water during transport. Pleiku city, which is located in the Central Highlands of Vietnam, has built two treatment plants and a network of water supply pipelines in the core area. An analysis of the current state of the water supply system including water supply, treatment plant and pipeline system helps identify existing problems in the system. Through mixed methods, hazards or hazardous events are identified as a basis for risk assessment by using semi – quantitative method to assess raw risk and residual risk for each hazard. Priority risks are identified to focus on proposing the possible solutions that will improve the performance and management of domestic water supply systems.

scholarly journals Groundwater Treatment for Establishment of Autonomous Drinking Water Supply Systems

2016 ◽  
pp. 98
Author(s):  
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Drinking Water Supply ◽  
Water Supply Systems ◽  
Preliminary Treatment ◽  
Groundwater Treatment ◽  
Residual Concentration ◽  
Drinking Water Supply System

Groundwater of prospecting/operative boreholes located at the South-West suburb of Ekaterinburg and requiring a preliminary treatment to meet requirements of СанПиН 2.1.4.1074-01 state sanitary standard is a subject of inquiry. Optimal parameters (ozone doze, time of water contact with air/ozone mixture, water filtration rate, and ozone residual concentration) of the water de-ferrization, de-manganezation, and disinfection according the “oxidization-filtration” scheme have been experimentally set at a laboratory plant. These parameters will enable to secure the desired groundwater quality for its use in the autonomous drinking water supply system. A technique and a plant for groundwater treatment with 5 m3/hour for an autonomous drinking water supply system has been developed.

scholarly journals Risk Assessment of Drinking Water Supply System in the Tidal Inundation Area of Semarang – Indonesia

2015 ◽  
Vol 23 ◽  
pp. 93-98 ◽  
Author(s):  
Budiyono ◽  
Praba Ginandjar ◽  
Lintang Dian Saraswati ◽  
Dina Rahayuning Pangestuti ◽  
Martini ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Drinking Water Supply ◽  
Tidal Inundation ◽  
Inundation Area ◽  
Drinking Water Supply System
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