Health Risk Management for the Users of a household-installed water supply system Based on Water Safety Planning Approach

2019 ◽  
Vol 75 (7) ◽  
pp. III_403-III_412
Author(s):  
Syun-suke KADOYA ◽  
Ken USHIJIMA ◽  
Ryusei ITO ◽  
Yoshiki HASEGAWA ◽  
Takayuki MIURA ◽  
...  
Keyword(s):  
Risk Management ◽  
Health Risk ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Safety Planning ◽  
Water Safety ◽  
Planning Approach ◽  
Health Risk Management

scholarly journals Water Safety Planning and Implementation in a Ghanaian Small-scale Water Supply System

2020 ◽  
pp. 1-18 ◽  
Author(s):  
Panin Asirifua Obeng ◽  
Peter Appiah Obeng ◽  
Eric Awere
Keyword(s):  
Water Supply ◽  
Management Practices ◽  
Supply System ◽  
Water Supply System ◽  
Small Scale ◽  
Water Supply Systems ◽  
Safety Planning ◽  
Water Safety ◽  
Quality Of Water

This study looked at the Assin Fosu Small Town Water Supply System in Ghana to verify whether the operation of the scheme is based on a comprehensive water safety plan and how the practice of water safety planning affects the quality of water delivered to the consumers. The study employed document reviews, structured observations, interviews and laboratory analysis of water samples. System design data files and an Operation and Management Contract document were reviewed along with in-depth interviews with key stakeholders of the water supply system. Structured observations were made to assess the management practices of the system managers. Three rounds of sampling of water were done at monthly intervals from 10 randomly selected public standpipes, 3 boreholes and 2 filtration units. Samples were analysed to assess their bacteriological safety and aesthetic (physical) quality (turbidity and colour). Upon detection of bacteriological contamination, the adequacy of disinfection was assessed by measuring the levels of residual chlorine. It was found that the recommended schedule for some key documented water quality control and monitoring activities were not complied with.  Consequently, the quality of water delivered to consumers at several public standpipes failed to meet the WHO guidelines for drinking water. Forty percent (40%) of all samples were found with faecal contamination, with 60% and 50% exceeding the WHO’s guideline levels for turbidity and colour respectively. It is recommended that the Community Water and Sanitation Agency in Ghana intensifies on-going efforts at ensuring that small-scale water supply systems in the country are managed with comprehensive water safety plans to prevent microbial contamination which could pose significant health risks to the consumers.

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

Water safety plan: a novel approach to evaluate the efficiency of the water supply system in Garmsar

2021 ◽  
Vol 211 ◽  
pp. 210-220
Author(s):  
Samaneh Abolli ◽  
Mahmood Alimohammadi ◽  
Mirzaman Zamanzadeh ◽  
Masud Yunesian ◽  
Kamyar Yaghmaeian ◽  
...  
Keyword(s):  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Water Safety ◽  
Novel Approach ◽  
Safety Plan ◽  
Water Safety Plan

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.

Bayesian model of urban water safety management

2014 ◽  
Vol 16 (4) ◽  
pp. 667-675 ◽  
Keyword(s):  
Water Supply ◽  
Tap Water ◽  
Water System ◽  
Operational Reliability ◽  
Supply System ◽  
Water Supply System ◽  
Main Task ◽  
Urban Water ◽  
Water Safety ◽  
Operational Conditions

<p>Water supply system is a critical infrastructure. Main task of urban water system is to provide consumers with drinking water in adequate quantity, at the required quality and pressure corresponding to current standards.</p> <p>For the purposes of this paper, operational reliability of the water supply system is defined as the ability to supply a constant flow of water for various groups of consumers, with a specific quality and specific pressure, according to consumers demands, in specific operational conditions, at any or at a specific time.</p> <div> <p>The main aim of this paper is to present a method for risk analysis using Bayesian process. The proposed method made it possible to estimate risk associated with the possibility of partial or total loss of the ability of water supply system operation. The paper proposes to consider two types of risk: the first type, associated with the possibility of interruptions in water supply and the second type, associated with the possibility of tap water contamination.&nbsp;</p> </div> <p>&nbsp;</p>

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.

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