scholarly journals Assessment of Risks to Public Water Supply From Low Flows and Harmful Water Quality in a Changing Climate

2019 ◽  
Vol 55 (12) ◽  
pp. 10386-10404 ◽  
Author(s):  
Mohammad Mortazavi‐Naeini ◽  
Gianbattista Bussi ◽  
J. Alex Elliott ◽  
Jim W. Hall ◽  
Paul G. Whitehead
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Public Water Supply ◽  
Changing Climate ◽  
Low Flows

scholarly journals The history and present of public drinking water supply and its regionalisation in Debrecen

2013 ◽  
pp. 147-151
Author(s):  
Sándor Nagy
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Public Water Supply ◽  
Considerable Decrease ◽  
The Public ◽  
Public Drinking Water ◽  
History Of ◽  
Sanitation Systems ◽  
Regional Water

The public water supply played a major role in the urbanization of Debrecen city, just like in the case of many other cities. We had plenty of water and so we wasted it. However nowadays we experience a considerable decrease in the level of groundwater which causes an increasing need of energy for pumping. Beside the above mentioned the ecological threat and the decreasing water quality are also major problems. This study attempts to draw attention to the possibilities and the future of the regional water supply, by showing the history of the water supply, the sanitation systems of Debrecen and their present day activities.

Combined microfiltration and adsorption process applied to public water supply treatment: water quality influence on pesticides removal

2019 ◽  
Vol 41 (18) ◽  
pp. 2382-2392
Author(s):  
Alcione Aparecida de Almeida Alves ◽  
Giselle Louise de Oliveira Ruiz ◽  
Thyara Campos Martins Nonato ◽  
Catiane Pelissari ◽  
Adriana Dervanoski ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Adsorption Process ◽  
Public Water Supply ◽  
Treatment Water

Management of groundwater sustainability and contamination - a Mozambique case study

2021 ◽  
Author(s):  
Isabel Margarida Horta Antunes ◽  
Ameno Bande
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Anthropogenic Activities ◽  
Supply System ◽  
Water Supply System ◽  
Human Consumption ◽  
Public Water Supply ◽  
Aquifer Systems ◽  
The City ◽  
Zambezi River

<p>Groundwater is vulnerable to contamination from natural and anthropogenic activities. The agricultural and human activities associated with hydrological characteristics influence the quality of groundwater. The City of Tete is in the Nharthanda Valley (Zambezi River, Central Mozambique). The city faces a set of serious structural issues of access to water such as a precarious public water supply system, including a lack of network management, water rationing, and a poor sewerage system. Groundwater is collected from the aquifer for the public water supply system of the old city of Tete and a for a traditional agro-livestock farm, which is irrigated by artesian wells. Groundwater abstraction has increased in the last few decades, and it was identified as a risk for groundwater quality and quantity. Groundwater physic-chemical and microbiological parameters obtained from fifteen boreholes and eleven wells have been determined to assess water quality. The presence of potential contaminant activities throughout the Nhartanda Valley and adjacent areas associated with contamination of the Zambezi River contribute to the degradation of water quality. The high vulnerability index for most chemical and microbiological elements indicates that groundwater is easily reached by bacteria and viruses and other potentially toxic substances. Most of the water parameters, from wells and boreholes, exceed the water referenced values allowed for human consumption and agricultural use. The protection of the Nhartanda Valley aquifer system is necessary and urgent. The identification of the most vulnerable areas provides important information for groundwater management, such as the indication of protection measures in aquifer systems.</p>

scholarly journals Impacts of Forest to Urban Land Conversion and ENSO Phase on Water Quality of a Public Water Supply Reservoir

Forests ◽  
2016 ◽  
Vol 7 (2) ◽  
pp. 29 ◽  
Author(s):  
Emile Elias ◽  
Hugo Rodriguez ◽  
Puneet Srivastava ◽  
Mark Dougherty ◽  
Darren James ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Urban Land ◽  
Public Water Supply ◽  
Land Conversion ◽  
Water Supply Reservoir

scholarly journals WATER QUALITY ASSESSMENT OF SAIGON RIVER FOR PUBLIC WATER SUPPLY BASED ON WATER QUALITY INDEX

2020 ◽  
Vol 58 (5A) ◽  
pp. 85
Author(s):  
Thuy Chau To
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Water Quality Index ◽  
Quality Index ◽  
Water Quality Management ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Quality Data ◽  
Public Water Supply ◽  
Water Quality Data

Water Quality Index (WQI) is a dimensional number that aggregates information from many water quality parameters according to a defined method. WQI is accepted as an efficient tool for water quality management. In this study, WQI of Saigon river for public water supply was calculated from nine water quality parameters including pH, suspended solids (SS), dissolved oxygen (DO), chemical oxygen demand (COD), nitrite, ammonia, phosphate, total dissolved iron and total coliform based on water quality data obtained monthly from January 2016 to December 2019 at three sampling sites. The results showed that most of WQI values belonged to class III (medium water quality with the WQIs of 35 – 64) and class IV (poor water quality with the WQIs of 11 – 34) and a deteriorating trend was observed from upstream to downstream of Saigon river. The river water quality could not be used for public water supply.

scholarly journals ANÁLISE ORGANOLÉPTICA (COR E GOSTO) DA ÁGUA FORNECIDA PELO SISTEMA PÚBLICO DE ABASTECIMENTO DO MUNICÍPIO DE ITABAIANA/SE

2019 ◽  
Vol 12 (3) ◽  
pp. 571
Author(s):  
Thaisa Lima Santos ◽  
Neuma Rubia Santana Rubia
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Water Distribution ◽  
Supply System ◽  
Water Supply System ◽  
Public Water Supply ◽  
The Public ◽  
Poor Water Quality ◽  
Large Water ◽  
The City

<p>Water plays a key role for human survival and for the development of societies. It is known, however, that it is becoming increasingly insufficient to meet the supply demand on the Planet. Even though Brazil has large water bodies, the country suffers from uneven water distribution along with poor water quality. The objective of this study was to verify the color and taste parameters of water supplied by the public water supply system in the city of Itabaiana/SE. The methodology used consisted of bibliographical researches, analyzes of water samples collected in the Serrano neighborhood and the application of questionnaires with questions related to the public water supply system. The results presented values above that established by the Potability Directives 518/2007 and 2,914 / 2011 regarding the parameters color and taste, and the interviews conducted with the residents of the Serrano neighborhood highlight the dissatisfaction and insecurity in relation to the Public Water Supply System.</p>

scholarly journals Reed Bed System for the Improvement of Laguna Lake Waters

2020 ◽  
pp. 113-122
Author(s):  
Mark Joseph J. Buncag ◽  
Angelica Canizares ◽  
Johair Hadji Salic
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Water Supply ◽  
Population Expansion ◽  
The Philippines ◽  
Class I ◽  
Public Water Supply ◽  
Class C ◽  
Reed Bed ◽  
Laguna Lake

Laguna lake is the biggest lake and considered one of the most important inland bodies of water in the Philippines due to its many uses. However, the lake has faced growing pressures (i.e., population expansion, urbanization, industrialization, deforestation, and land conversion) on its ecosystems over the past decades. These activities have led to the degradation of the lake’s water quality and ecosystem.The Department of Environment and Natural Resources (DENR) provided a water quality standard for freshwater in determining trends and in the evaluation of stages of deterioration or enhancement in quality of water which include 1) Class AA (Public Water Supply Class I); 2) Class A (Public Water Supply Class II); 3) Class B (Recreational Water Class I); Class C (Propagation and growth of fish class); and Class D (Navigable Waters). The classification of Laguna Lake falls under Class C, which means it is suitable for fishery. With this, intervention for the improvement of the water in Laguna Lake is highly needed. This study aims to design and assess the effectiveness of the reed bed system for the improvement of Laguna Lake. Results show that using reed bed water treatment; the total coliform will meet the standards of DENR after three years of treatment, which can be used as a source of water for irrigation, recreational area, and propagation of fishes. The concentration of ammonia will meet the standards of DENR after two and a half years by using reed bed water treatment, and inorganic phosphate will meet the standards of DENR after three years by using reed bed water treatment.

Drinking water quality and protection of resources

2010 ◽  
Vol 1 (1-2) ◽  
pp. 51-54
Author(s):  
J. Fettig
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Resources ◽  
River Water ◽  
Spring Water ◽  
Public Water Supply ◽  
Legal Requirements ◽  
Reservoir Water ◽  
Water Lake ◽  
Treatment Step

Abstract The structure of public water supply in Germany and the water resources used are briefly described. An overview over the legal requirements for drinking water is given, and the sources for contaminants are outlined. Then the multiple-barrier approach is discussed with respect to the resources groundwater and spring water, lake and reservoir water, and river water. Examples for treatment schemes are given and the principle of subsurface transport of river water as a first treatment step is described.

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