INTEGRAL ESTIMATION OF QUALITY OF THE DNIPRO RIVER WATER INCLUDING RADIATION INDEXES AT PLACES OF WATER INTAKE AND POTABLE WATER SUPPLY STATIONS

Kentucky river water samples were collected at the input of a potable water supply weekly, for a period of two years. Eighteen parameters were analysed and/or recorded for each weekly observation. The variables were of a physical, chemical and biological nature. Enteric virus presence was detected by cell culture analysis from ∼200 L samples of river water. A database of 108 observations was assembled. Of these only 100 complete observations were used for the modelling analysis. Model input parameters were selected solely based on their statistical significance in forward, backward and stepwise selection procedures. Multivariate logistic regression (MLR) was used to determine the relative significance of the input parameters for predicting the presence or absence of enteric virus. The final, best-fit MLR model that used log-transformed values for enterococci, the AC/TC ratio, faecal coliforms (FC) and temperature demonstrated 82.5 and 81.4% sensitivity and specificity, respectively.

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An Analysis of Total Phosphorus Dispersion in Lake Used As a Municipal Water Supply

Anais da Academia Brasileira de Ciências ◽

10.1590/0001-3765201520130317 ◽

2015 ◽

Vol 87 (3) ◽

pp. 1505-1518 ◽

Cited By ~ 2

Author(s):

RÔMULO C. LIMA ◽

ANDRÉ L.A. MESQUITA ◽

CLAUDIO J.C. BLANCO ◽

MARIA DE LOURDES S. SANTOS ◽

YVES SECRETAN

Keyword(s):

Water Supply ◽

Total Phosphorus ◽

Potable Water ◽

Diffusion Reaction ◽

Municipal Water Supply ◽

Quality Of Water ◽

Lake Bottom ◽

Potable Water Supply ◽

Dimensional Equation

ABSTRACTIn Belém city is located the potable water supply system of its metropolitan area, which includes, in addition to this city, four more municipalities. In this water supply complex is the Água Preta lake, which serves as a reservoir for the water pumped from the Guamá river. Due to the great importance of this lake for this system, several works have been devoted to its study, from the monitoring of the quality of its waters to its hydrodynamic modeling. This paper presents the results obtained by computer simulation of the phosphorus dispersion within this reservoir by the numerical solution of two-dimensional equation of advection-diffusion-reaction by the method θ/SUPG. Comparing these results with data concentration of total phosphorus collected from November 2008 to October 2009 and from satellite photos show that the biggest polluters of the water of this lake are the domestic sewage dumps from the population living in its vicinity. The results obtained indicate the need for more information for more precise quantitative analysis. However, they show that the phosphorus brought by the Guamá river water is consumed in an area adjacent to the canal that carries this water into the lake. Phosphorus deposits in the lake bottom should be monitored to verify their behavior, thus preventing the quality of water maintained therein.

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The economic value of basin protection to improve the quality and reliability of potable water supply: the case of Loja, Ecuador

Water Policy ◽

10.2166/wp.2011.007 ◽

2011 ◽

Vol 14 (1) ◽

pp. 1-13 ◽

Cited By ~ 5

Author(s):

Samuel D. Zapata ◽

Holger M. Benavides ◽

Carlos E. Carpio ◽

David B. Willis

Keyword(s):

Water Supply ◽

Potable Water ◽

Economic Value ◽

Human Consumption ◽

Water Users ◽

Quality Of Water ◽

Potable Water Supply ◽

Quality And Reliability ◽

The Individual

The objective of this study was to estimate the economic value that people living in Loja, Ecuador, place on the protection of two basins when the protection is designed to improve both the quality and reliability of the water supply for human consumption by urban residents. Empirical results indicate that households have an average willingness to pay (WTP) of $5.80 per month to preserve the basins. The main variables affecting WTP are current monthly water cost, perception about the fairness of the existing water price, the number of hours that service is available, and the gender of the individual interviewed. The results of this study, and the later implementation by the Loja City Municipality of a basin protection project funded through a fee on water users, provide evidence that households at all income levels strongly support and are willing to pay for a project that has the potential to improve the quality of water services and protect the environment.

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Protection of Water Based and Water Abstraction Sites in Hungary Based on Studies in Győr

Hadmérnök ◽

10.32567/hm.2019.1.16 ◽

2019 ◽

Vol 14 (1) ◽

pp. 192-203

Author(s):

Krisztina Takács

Keyword(s):

Water Supply ◽

Potable Water ◽

Social Activity ◽

Point Of View ◽

Activity Maximum ◽

Water Abstraction ◽

Adequate Quality ◽

Potable Water Supply ◽

Maximum Protection

Water is indispensable for life and social activity, the most widely used on Earth. Today, an increasing problem is the production of sufficient quantity and quality of potable water for mankind. In order to ensure the supply of water, nowadays we must pay special attention, since it is intended to provide the consumer with adequate quality and quantity of water from a public health point of view. This also includes proper protection of water bases, which prevents any harmful substances or dirt from entering the water. Potable water supply is a special task, since in all circumstances it is necessary to ensure the smooth operation of the population. For this activity, maximum protection of the water bases and the water supply system is essential, which I will examine for Hungary, and I will also present a practical example."This article was prepared by the Ministry of Human Resources with the support of NewNational Excellence Program ÚNKP-18-3-INKE-105".

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