Quality of Untreated Water for Public Supplies in Florida with Reference to the National Primary Drinking Water Regulations

10.35256/ms91 ◽  
1979 ◽  
Keyword(s):  
Drinking Water ◽  
Untreated Water

Assessment and management of health risks related to the recycling of filter backwash water in drinking water production

2013 ◽  
Vol 8 (2) ◽  
pp. 166-179 ◽  
Author(s):  
J. F. Loret ◽  
L. Cossalter ◽  
S. Robert ◽  
I. Baudin ◽  
M. Conan ◽  
...  
Keyword(s):  
Drinking Water ◽  
Drinking Water Treatment ◽  
Direct Filtration ◽  
Cryptosporidium Oocysts ◽  
Untreated Water ◽  
Drinking Water Production ◽  
The Impact ◽  
By Products ◽  
Filter Backwash Water

Analytical campaigns were conducted on different drinking water treatment lines in order to characterize filter backwash water and assess the impact of recycling this water at the head of the plant. The pollutants identified in this water are essentially in the form of particles. Recycling this water may consequently increase the concentration of parameters such as turbidity, suspended solids, metals from coagulants and protozoa. On the other hand, no release of pesticides nor significant generation of disinfection by-products was observed during filter backwash with chlorinated water, in the conditions applied in France for chlorination. A modeling approach based on the mass balance of Cryptosporidium oocysts was applied to estimate the impact of recycling on oocysts concentration in the inlet water. A risk of infection was then assessed for each recycling scenario. A similar approach was also applied for amoebae, which have the capacity to colonize filter media, and for metal residues from coagulants. The results of this study demonstrate that two different situations have to be considered separately: • In the case of treatment lines composed of separate sedimentation and filtration steps, recycling at the head of the treatment process, even with no treatment, has no significant consequence on the microbial quality of the inlet water, and generates no additional health risk for the consumer. • In the case of treatment lines with no sedimentation step (direct filtration or UF used alone), recycling untreated water generates an excess of risk for the consumer which is not acceptable. Adding a coagulation / sedimentation step in the recycling circuit is sufficient in that case to keep the risk within acceptable limits.

Gender and Regional Differences in the Life Expectancy in Russia

2020 ◽  
Vol 27 (1) ◽  
pp. 106-120 ◽  
Author(s):  
L. A. Rodionova ◽  
E. D. Kopnova
Keyword(s):  
Drinking Water ◽  
Alcohol Consumption ◽  
Life Expectancy ◽  
Gender Gap ◽  
Poor Quality ◽  
Living Conditions ◽  
Regional Differentiation ◽  
Russian Regions ◽  
Poor Nutrition

The relevance of the chosen topic is closely related to the development of a system for monitoring the implementation of the May Presidential Decree (2018) to increase life expectancy and improve the quality of life of the population. It has been stated that despite the positive dynamics of life expectancy over the past decade, Russia still has a huge regional differentiation (16,6 years for women, 18,2 years for men in 2016) and an average gender gap - 10,6 years. The choice of factors affecting the gender gap in life expectancy in Russian regions is supported by a conclusion most common in foreign studies that climatic conditions, living conditions, the quality of food and drinking water, alcohol consumption are essential components of public health and life expectancy.The article provides an overview of studies on assessment factors of life expectancy, presents the authors’ approach to identifying gender gaps in life expectancy, living conditions, and lifestyle affecting the indicator of life expectancy. The paper presents the results of a comparative analysis of gender gap in life expectancy in Russia and foreign countries. The paper studies the correlation between living conditions and lifestyle, and life expectancy.Classification of the regions by the life expectancy at birth for men and women is an important component of this study. The authors used Rosstat data for 2016 and the k-means method to select three clusters of Russian regions taking into account gender, living conditions and lifestyle. The paper identifies similar health problems of the regions that are associated with alcohol consumption, poor nutrition and poor quality of drinking water, poor housing and living conditions. The lowest life expectancy rates for men and women are recorded in regions of the 1st cluster (Jewish Autonomous Region, Republic of Tuva, Chukotka Autonomous Area). High mortality rates are a result of external causes. There is a poor quality of drinking water and poor nutrition, excessive alcohol consumption, and inadequate housing conditions.Based on the obtained results were determined possible reserves for reducing the gender and regional differentiation of life expectancy.

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

Barcelona's water supply improvement: the brine collector of the Llobregat river

1994 ◽  
Vol 30 (10) ◽  
pp. 221-227 ◽  
Author(s):  
Jordi Martín-Alonso
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Salt Mine ◽  
Water Production ◽  
Public Work ◽  
Drinking Water Production ◽  
Llobregat River

The Llobregat is a 156 km long river, which supplies 35% of the Barcelona's drinking water needs from the Sant Joan Despí Water Treatment Plant. Since the establishment of the Salt Mine Works in the Llobregat basin in 1923, a progressive salinization of the water sources has been recorded. The operation of the Brine Collector, as a public work carried out by Aigües de Barcelona (AGBAR), started in 1989; it enabled a very significant improvement in the quality of the surface water used for drinking-water production.

scholarly journals Assessment of Quality of Drinking Water from Ogun State, Nigeria

2021 ◽  
Vol 665 (1) ◽  
pp. 012033
Author(s):  
Mojisola R. Usikalu ◽  
Williams Ayara ◽  
Olusegun Ayanbisi ◽  
Ayanfe Fola-Emmanuel ◽  
Chisom Okechukwu
Keyword(s):  
Drinking Water ◽  
Ogun State

Assessing the drinking water quality of educational institutions at selected locations of district Swat, Pakistan

2021 ◽  
Vol 80 (8) ◽  
Author(s):  
Muhammad Salam ◽  
Fakhri Alam ◽  
Md. Nuralam Hossain ◽  
Mian Abdal Saeed ◽  
Tasir Khan ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Drinking Water Quality ◽  
Educational Institutions
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