scholarly journals Modeling of <i>E. coli</i> distribution for hazard assessment of bathing waters affected by combined sewer overflows

2020 ◽  
Vol 20 (5) ◽  
pp. 1219-1232 ◽  
Author(s):  
Luca Locatelli ◽  
Beniamino Russo ◽  
Alejandro Acero Oliete ◽  
Juan Carlos Sánchez Catalán ◽  
Eduardo Martínez-Gomariz ◽  
...  
Keyword(s):  
Water Quality ◽  
Hazard Assessment ◽  
Health Hazard ◽  
Water Bodies ◽  
Combined Sewer Overflows ◽  
Bathing Water ◽  
Bathing Waters ◽  
Combined Sewer ◽  
Bathing Water Quality

Abstract. Combined sewer overflows (CSOs) affect bathing water quality of receiving water bodies by bacterial pollution. The aim of this study is to assess the health hazard of bathing waters affected by CSOs. This is useful for bathing water managers, for risk assessment purposes, and for further impact and economic assessments. Pollutant hazard was evaluated based on two novel indicators proposed in this study: the mean duration of insufficient bathing water quality (1) over a period of time (i.e., several years) and (2) after single CSO/rain events. In particular, a novel correlation between the duration of seawater pollution and the event rainfall volume was developed. Pollutant hazard was assessed through a coupled urban drainage and seawater quality model that was developed, calibrated and validated based on local observations. Furthermore, hazard assessment was based on a novel statistical analysis of continuous simulations over a 9-year period using the coupled model. Finally, a validation of the estimated hazard is also shown. The health hazard was evaluated for the case study of Badalona (Spain) even though the methodology presented can be considered generally applicable to other urban areas and related receiving bathing water bodies. The case study presented is part of the EU-funded H2020 project BINGO (Bringing INnovation to OnGOing water management – a better future under climate change).

scholarly journals Evaluating health hazard of bathing waters affected by combined sewer overflows

2019 ◽  
Author(s):  
Luca Locatelli ◽  
Beniamino Russo ◽  
Montse Martinez
Keyword(s):  
Water Quality ◽  
Sea Water ◽  
Health Hazard ◽  
Water Bodies ◽  
Combined Sewer Overflows ◽  
Bathing Water ◽  
Bathing Waters ◽  
Combined Sewer ◽  
Sewer Overflows ◽  
Bathing Water Quality

Abstract. Combined Sewer Overflows (CSO) affect bathing water quality of receiving water bodies by bacterial contamination. The aim of this is study is to assess the health hazard of bathing waters affected by CSOs. This is useful for bathing water managers, for risk assessment purposes and for further impact and economical assessments. Contaminant hazard was evaluated based on two novel indicators proposed in this study: the mean duration of insufficient bathing water quality (1) over a period of time (i.e. several years) and (2) after single CSO/rain events. Particularly, a novel correlation between the duration of sea water contamination and the event rainfall volume was developed. Contaminant hazard was assessed through a state-of-the-art coupled urban drainage and sea water quality model that was developed, calibrated and validated based on local observations. Furthermore, hazard assessment was based on a novel statistical analysis of continuous simulations over a 9 year period using the coupled model. Finally, a validation of the estimated hazard is also shown. The health hazard was evaluated for the case study of Badalona (Spain) even though the methodology presented can be considered generally applicable to other urban areas and related receiving bathing water bodies.

Stormwater overflow impacts on the sanitary quality of bathing waters

2007 ◽  
Vol 56 (11) ◽  
pp. 43-50 ◽  
Author(s):  
E. Soyeux ◽  
F. Blanchet ◽  
B. Tisserand
Keyword(s):  
Water Quality ◽  
Urban Areas ◽  
Active Management ◽  
Bathing Water ◽  
Bathing Waters ◽  
Management Concept ◽  
On Line ◽  
Bathing Water Quality ◽  
High Level ◽  
Water Quality Deterioration

New European Directive 2006/7/EC concerning the management of bathing water quality introduces the concept of ‘active management of bathing water sanitary quality’ which could lead to a temporary bathing prohibition in case of short term pollution. For the last three bathing seasons, Veolia has carried out in experimental mode this ‘active management’ concept at more than one hundred bathing sites with various characteristics. Results confirm the high level of microbiological pollution observed in sewer overflows during rainy periods, which is the main cause of bathing water quality deterioration. An on-line treatment solution has been successfully tested. This solution may be used in dense urban areas.

Determinants of Individuals' Willingness to Pay for Perceived Reductions in Environmental Health Risks: A Case Study of Bathing Water Quality

1998 ◽  
Vol 30 (4) ◽  
pp. 577-594 ◽  
Author(s):  
S Georgiou ◽  
I H Langford ◽  
I J Bateman ◽  
R K Turner
Keyword(s):  
Water Quality ◽  
Willingness To Pay ◽  
Health Risks ◽  
East Anglia ◽  
Environmental Health Risks ◽  
Bathing Water ◽  
Measures Of Risk ◽  
Bathing Water Quality

A contingent valuation (CV) study was undertaken to investigate individuals' stated willingness to pay (WTP) to reduce perceived risks of illness from the quality of bathing water at two beaches in East Anglia, United Kingdom. One beach, Great Yarmouth, failed to meet the EC (European Community) Bathing Water Quality Directive standard, whereas the other at Lowestoft passed. The analysis focuses on determinants of individuals' WTP, including measures of risk perception and attitudes to health not usually measured in CV studies. A conceptual model is then presented which sets the valuation of individual preferences in the context of personal worldviews, and external cultural, societal, and environmental factors which may influence, directly or indirectly, an individual's stated WTP.

scholarly journals Somatic coliphages and bacterial indicators of bathing water quality in the beaches of Gipuzkoa, Spain

2007 ◽  
Vol 5 (3) ◽  
pp. 417-426 ◽  
Author(s):  
Jesús M. Ibarluzea ◽  
Belén Moreno ◽  
Elena Serrano ◽  
Karmele Larburu ◽  
María J. Maiztegi ◽  
...  
Keyword(s):  
Water Quality ◽  
Basque Country ◽  
Water Quality Monitoring ◽  
Bacterial Indicators ◽  
Somatic Coliphages ◽  
E Coli ◽  
Bathing Water ◽  
Bathing Waters ◽  
Viral Indicators ◽  
Bathing Water Quality

Monitoring the quality of the bathing waters of Gipuzkoa (the Basque Country, Spain) makes it possible to assess the suitability of its 15 beaches for bathing throughout each season. In 1998, the parameters E. coli, somatic coliphages (SOMCPH) and F-specific RNA bacteriophages (FRNAPH) were incorporated into the bathing water quality monitoring system. This enabled the study of the link between bacterial and viral indicators as well as the analysis of the ratios between both types of indicators in waters with different levels of pollution. Although bacterial indicators (total coliforms (TC) and faecal coliforms (FC)) and enterococci showed a strong correlation between them, the correlations between the viral indicators and between the viral and bacterial indicators were weaker, though significant in all cases. The ratio between SOMCPH and E. coli indicates that at low levels of bacterial pollution (E coli &lt;100 MPN/100 ml) SOMCPH outnumber E coli. In contrast, at higher levels of pollution (E coli &gt;100 MPN/100 ml), SOMCPH numbers are lower than those of E-coli. The data reveal the presence of viral indicators in waters classified as suitable for bathing by the European Directive and alert us to their suitability.

WATER QUALITY OF THE BATHING WATER IN THE EUROPEAN UNION AND IN RUSSIA

2020 ◽  
pp. 12-16
Author(s):  
I.V. Glazunova ◽  
◽  
N.P. Karpenko ◽  
A.M. Bakshtanin
Keyword(s):  
Water Quality ◽  
European Union ◽  
Water Bodies ◽  
Practical Significance ◽  
The European Union ◽  
Water Quality Control ◽  
Bathing Water ◽  
Bathing Water Quality ◽  
The Eu

The relevance of the article is determined by the importance of water quality control in the water bodies for bathing, which can directly affect the health of the population and social conditions in the field of water recreation, water sports and tourism. The aim of the study is to analyze the structure and dynamics of the bathing water quality in the European Union based on the results of a review of the literature sources, as well as to compare approaches to this issue in Russia and the EU countries. The practical significance of the publi-cation is to disseminate the experience of the European Union in monitoring the quality of municipal water in the bathing areas, taking into account the requirements of the EU water Directive as well as in comparison with the review of the Russian experience. A brief overview of the situation with water quality in water bodies used for bathing in the European Union and Russia is given, and the current EU water directives are taken into account in a socially oriented approach.

A model tool for bathing water quality management: A case study on Salmonella occurrence at the southern Baltic coast

2013 ◽  
Vol 82 ◽  
pp. 71-84 ◽  
Author(s):  
Bianca Schippmann ◽  
Gerald Schernewski ◽  
Ulf Gräwe ◽  
Hans Burchard ◽  
Tomasz Walczykiewicz
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Water Quality Management ◽  
Baltic Coast ◽  
Bathing Water ◽  
Southern Baltic ◽  
Bathing Water Quality

scholarly journals Development of a New Predictive index (Bathing Water Quality Index, BWQI) Based on Escherichia coli Physiological States for Bathing Waters Monitoring

2021 ◽  
Vol 9 (2) ◽  
pp. 120
Author(s):  
Simone Bonamano ◽  
Alice Madonia ◽  
Gabriella Caruso ◽  
Giuseppe Zappalà ◽  
Marco Marcelli
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Fluorescent Antibody ◽  
Predictive Tool ◽  
E Coli ◽  
Bathing Water ◽  
Bathing Waters ◽  
Bathing Water Quality

Bacterial pathogens in coastal aquatic ecosystems pose a potential public health hazard for bathing water use. The European Bathing Water Directive (2006/7/EC) currently relies on the culturability of fecal pollution bacterial indicators such as Escherichia coli, without considering dormant or quiescent (Viable But Not Culturable, VBNC) cells, whose possible resuscitation after bathers ingestion cannot be excluded. Standard methods are also time-consuming and therefore hardly meet early warning needs of marine monitoring. To solve this issue, a new index, the Bathing Water Quality Index (BWQI), has here been developed, allowing to identify the most favorable coastal zones for recreational use. The index was calculated by combining numerical simulations of living and dormant E. coli abundances and their residence times. To specifically set up the model with the different physiological states of the whole E. coli population, an ad hoc experiment based on the fluorescent antibody method was performed. The BWQI application to Santa Marinella bathing area highlights a potential risk for human health in the zone most frequented by bathers. This study provides a predictive tool to support preventive decisions of the competent authorities and to properly protect bathers’ health, stressing the need for improved methods for environmental monitoring.

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