scholarly journals Environmental and anthropogenic factors affecting coastal bathing water quality

Pomorstvo ◽  
2021 ◽  
Vol 35 (1) ◽  
pp. 57-68
Author(s):  
Diana Mance ◽  
Davor Mance ◽  
Darija Vukić Lušić
Keyword(s):  
Water Quality ◽  
Predictive Models ◽  
Common Good ◽  
Seawater Temperature ◽  
Anthropogenic Factors ◽  
Anthropogenic Pressure ◽  
Economic Resource ◽  
Bathing Water ◽  
Hydrogeological Characteristics ◽  
Bathing Water Quality

Coastal bathing water, as a common good, is an economic resource of public health interest. Predictive models of coastal bathing water contamination are needed for timely prevention of pollution, warning of bathers, and activation of municipal services and utilities in case of contingencies, as well as institutional mechanism designs for common good management purposes. The goal of this research is to identify the variables that would improve predictive models of coastal bathing water bacterial contamination. The microbiological quality of coastal bathing water is affected by many variables. This research is an analysis of the following determinants: precipitation amount, seawater temperature and salinity, as well as few indicators of anthropogenic pressure on the environment such as registered population, registered tourist overnight stays and the amount of generated municipal waste, all possibly directly or indirectly affecting the bathing water quality in 17 coastal municipalities in the Primorje-Gorski Kotar County. The analysis showed that rainfall, as an instrumental confounder variable, influences salinity and seawater temperature by increasing groundwater discharge and bringing contamination i.e. increasing enterococci and Escherichia coli concentrations in coastal bathing water. Population as the conjectured independent variable, representing the anthropogenic cause of pollution, was once again falsified as a statistically significant determinant. For further research, longer-term sampling (preferably year-round) at micro-locations of comparable hydrogeological characteristics is recommended.

scholarly journals Integrated River and Coastal Flow, Sediment and Escherichia coli Modelling for Bathing Water Quality

Water ◽  
2015 ◽  
Vol 7 (12) ◽  
pp. 4752-4777 ◽  
Author(s):  
Guoxian Huang ◽  
Roger Falconer ◽  
Binliang Lin
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Bathing Water ◽  
Bathing Water Quality ◽  
Coastal Flow

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).

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.

Effects of sewage discharges on microbial components in tropical coastal waters (Senegal, West Africa)

2008 ◽  
Vol 59 (7) ◽  
pp. 614 ◽  
Author(s):  
Marc Bouvy ◽  
Enora Briand ◽  
Maimouna M. Boup ◽  
Patrice Got ◽  
Christophe Leboulanger ◽  
...  
Keyword(s):  
Water Quality ◽  
Heterotrophic Nanoflagellates ◽  
Anthropogenic Pressure ◽  
The European Union ◽  
Aquatic Communities ◽  
African Countries ◽  
Before And After ◽  
Near Shore ◽  
Bathing Water Quality ◽  
The Impact

Coastal ecosystems are frequently submitted to anthropogenic pressure but little is known about how the dynamics of aquatic communities can be altered. The impact of urban and industrial discharges on microbial plankton was studied in Hann Bay near Dakar (Senegal) on the Atlantic Ocean. Spatial patterns were studied using three transects, with a total of 20 stations, during two periods in May and November (before and after the seasonal upwelling), revealing a clear contrast between near shore stations and the intermediate and seaward stations. In November, phytoplankton were associated with dissolved nutrient availability (e.g. with nitrate, r = 0.76) whereas in May, phytoplankton were more correlated with microbial variables (e.g. with heterotrophic nanoflagellates, r = 0.63). Most samples (40) failed to meet the quality levels for the faecal indicator bacteria (FIB) defined by the European Union bathing water quality directive. The topography plays a major role in water circulation explaining the presence of FIB at the seaward stations. The high prevalence of FIB during the two periods suggests chronic pollution and a potential risk to recreational swimmers and fish consumers in Hann Bay. Thus, as demonstrated in various temperate systems, the decline of water quality constitutes a serious problem in many West African countries.

Corrigendum to: Effects of sewage discharges on microbial components in tropical coastal waters (Senegal, West Africa)

2008 ◽  
Vol 59 (9) ◽  
pp. 838 ◽  
Author(s):  
Marc Bouvy ◽  
Enora Briand ◽  
Maimouna M. Boup ◽  
Patrice Got ◽  
Christophe Leboulanger ◽  
...  
Keyword(s):  
Water Quality ◽  
Heterotrophic Nanoflagellates ◽  
Anthropogenic Pressure ◽  
The European Union ◽  
Aquatic Communities ◽  
African Countries ◽  
Before And After ◽  
Near Shore ◽  
Bathing Water Quality ◽  
The Impact

Coastal ecosystems are frequently submitted to anthropogenic pressure but little is known about how the dynamics of aquatic communities can be altered. The impact of urban and industrial discharges on microbial plankton was studied in Hann Bay near Dakar (Senegal) on the Atlantic Ocean. Spatial patterns were studied using three transects, with a total of 20 stations, during two periods in May and November (before and after the seasonal upwelling), revealing a clear contrast between near shore stations and the intermediate and seaward stations. In November, phytoplankton were associated with dissolved nutrient availability (e.g. with nitrate, r = 0.76) whereas in May, phytoplankton were more correlated with microbial variables (e.g. with heterotrophic nanoflagellates, r = 0.63). Most samples (40) failed to meet the quality levels for the faecal indicator bacteria (FIB) defined by the European Union bathing water quality directive. The topography plays a major role in water circulation explaining the presence of FIB at the seaward stations. The high prevalence of FIB during the two periods suggests chronic pollution and a potential risk to recreational swimmers and fish consumers in Hann Bay. Thus, as demonstrated in various temperate systems, the decline of water quality constitutes a serious problem in many West African countries.

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 Determination of Microbiological Pollution Level of Lake Van and Lake Erçek Situated within the Borders of Van Province

2021 ◽  
Author(s):  
Elif Aydın ◽  
Mehmet Parlak ◽  
Hüseyin Güdücüoğlu ◽  
Yasemin Bayram
Keyword(s):  
Public Health ◽  
Water Quality ◽  
Water Samples ◽  
Fecal Coliform ◽  
Total Coliform ◽  
Lake Van ◽  
Quality Regulation ◽  
Bathing Water ◽  
Microbiological Pollution ◽  
Bathing Water Quality

Objective: Lake Van is one of the most important recreation areas of the region. Investigation of microbiological pollution of Lake Van is very important for public health. The aim of this study is to assess the microbiological pollution and determine water quality of the lakes Van and Erçek situated within Van Province, which are used for swimming and recreation to protect both human and environmental health. For this purpose, the presence of fecal coliform, total coliform and enterococci were investigated in samples taken from 29 different points of the lakes. Method: Between June and September 2015, 232 water samples were taken from predefined 29 points, every two weeks, and sent to the Public Health Laboratory of Van Province in 300-500 mL sterile plastic bottles in accordance with Bathing Water Quality Regulation (76/160 / EU: add-on clause 5. Membrane filtration method was used to analyze the samples for coliform bacilli and enterococci. Mandatory values according to bathing water quality regulation were taken as 2000 cfu/100 ml,10000 cfu/100 ml and 1000 cfu/100 ml for fecal coliform, total coliform and enterococcus, respectively. Results: In 196 (84%) of 232 water samples collected, no bacterial contamination was found, while 36 (16%) samples were found contaminated with fecal coliform, total coliform and Enterococcus species. At least one or more specimens of poor quality water were detected in 17 of 29 sampled beaches. Conclusion: It was envisaged to take precautions by restricting the use of the places where microbiological pollution was detected. In addition, regular analyzes are important for public health.

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