scholarly journals Microbiological water quality in a decentralized Arctic drinking water system

2020 ◽  
Vol 6 (7) ◽  
pp. 1855-1868
Author(s):  
Stephanie L. Gora ◽  
Tim Anaviapik Soucie ◽  
Nicole E. McCormick ◽  
C. Carolina Ontiveros ◽  
Vincent L'Hérault ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water System ◽  
Arctic Region ◽  
Water Source ◽  
Domestic Water ◽  
Point Of Use ◽  
System P ◽  
Drinking Water System ◽  
Microbiological Water Quality ◽  
Drinking Water Samples

Drinking water samples were collected from the water source, water delivery truck, domestic water storage tanks, and at the point of use in a decentralized drinking water system in Pond Inlet, Nunavut, a predominantly Inuit community in Canada's Arctic region.

Temporal variability of disinfection by-products concentration in urban public water system

2013 ◽  
Vol 14 (4) ◽  
pp. 393-398
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Temporal Variability ◽  
Water System ◽  
The Other ◽  
Major Constituent ◽  
System P ◽  
Public Water System ◽  
Drinking Water Samples ◽  
By Products

The occurrence of trihalomethanes (THMs) was studied in the drinking water samples from urban water supply network of Karachi city that served more than 18 million people. Drinking water samples were collected from 58 locations in summer (May-August) and winter (November-February) seasons. The major constituent of THMs detected was chloroform in winter (92.34%) and summer (93.07%), while the other THMs determined at lower concentrations. Summer and winter concentrations of total THMs at places exceed the levels regulated by UEPA (80 μg l-1) and WHO (100 μg l-1). GIS linked temporal variability in two seasons showed significantly higher median concentration (2.5%-23.06%) of THMs compared to winter.

scholarly journals Influence of hydraulic regimes and Cl2/NH3-N mass ratios on the bacterial structure and composition in an experimental flow cell chloraminated drinking water system

2019 ◽  
Vol 5 (5) ◽  
pp. 977-992 ◽  
Author(s):  
Yi Shi ◽  
Akintunde Babatunde ◽  
Bettina Bockelmann-Evans ◽  
Gordon Webster
Keyword(s):  
Drinking Water ◽  
Water System ◽  
Flow Cell ◽  
System P ◽  
Drinking Water System ◽  
Mass Ratios ◽  
Bacterial Structure ◽  
Microbial Analysis

A novel microbial analysis regarding impacts of hydraulic regimes and Cl2/NH3-N mass ratios is provided for an experimental chloraminated DWDS experiencing nitrification.

scholarly journals An outbreak of tularemia in southwestern Turkey

2021 ◽  
Vol 15 (06) ◽  
pp. 812-817
Author(s):  
Murat Kutlu ◽  
Çağrı Ergin ◽  
Aynur Karadenizli ◽  
Selda Sayın Kutlu
Keyword(s):  
Drinking Water ◽  
Water System ◽  
Water Source ◽  
Outbreak Investigation ◽  
Serum Samples ◽  
Waterborne Outbreak ◽  
The People ◽  
Drinking Water System ◽  
Polymerase Chain ◽  
The Village

Introduction: Tularemia has reemerged and spread throughout Turkey, and the number of cases has increased. In this study, we report on a waterborne outbreak of tularemia in the spring of 2013 in a region which was previously disease-free, and we investigated the reasons for the outbreak. Methodology: The index case, a 17-year-old male, was diagnosed with oropharyngeal tularemia. An outbreak investigation was initiated after receiving information from other patients with similar symptoms from the same village along with Balkıca, Tavas, and Denizli. An epidemiological and environmental investigation was conducted. Tonsil swab specimens/lymph node aspirates collected from patients, and water samples collected from unchlorinated drinking water sources, were cultured. Additionally, a real-time polymerase chain reaction (RT-PCR) was performed on these samples. Serum samples from patients were analyzed for antibody response. Results: A total of 7 patients were found in this outbreak investigation. The attack rate was found to be 1% among the people of the village and 25% among patients’ family members. The drinking-water system was contaminated with F. tularensis during this outbreak. Conclusions: Lack of appropriate water infrastructure and sanitation was the primary reason for this tularemia outbreak in Turkey. Improving the water source infrastructure and sanitation should be the primary approach to preventing tularemia outbreaks.

scholarly journals Source Water Characteristics and Building-specific Factors Influence Corrosion and Point of Use Water Quality in a Decentralized Arctic Drinking Water System

2020 ◽  
Vol 54 (4) ◽  
pp. 2192-2201 ◽  
Author(s):  
Stephanie L. Gora ◽  
Benjamin F. Trueman ◽  
Tim Anaviapik-Soucie ◽  
Megan K. Gavin ◽  
C. Carolina Ontiveros ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water System ◽  
Source Water ◽  
Water Characteristics ◽  
Point Of Use ◽  
Drinking Water System ◽  
Specific Factors

scholarly journals Towards a Sustainable Small Non-Community Drinking Water System in Ontario: Owners’ Risk Awareness and Perceptions to Water Safety

2018 ◽  
Vol 11 (3) ◽  
pp. 71 ◽  
Author(s):  
Mehmet Fatih Sekercioglu ◽  
Jerry White ◽  
Dan Shrubsole ◽  
Jamie Baxter
Keyword(s):  
Drinking Water ◽  
Water System ◽  
Water Source ◽  
Water Systems ◽  
Research Approach ◽  
Risk Awareness ◽  
Water Safety ◽  
Drinking Water System ◽  
Study Results ◽  
Drinking Water Systems

In Ontario, small non-community drinking water systems are defined as systems that make drinking water available to the public and are not connected to a community drinking water system. This study, using qualitative research approach, examines the risk awareness and perceptions of small non-community drinking water system owners in providing safe drinking water to their clients and protecting their water source. Our study yields the need for developing a sustainable operation model for small non-community drinking water systems. The study results provide recommendations to the regulatory agency for effective and efficient administration of the program such as offering customized and affordable training opportunities and developing effective communication strategies for owners and operators.

scholarly journals TO THE QUESTION ABOUT THE QUALITY OF DRINKING WATER SYSTEM OF CENTRALIZED DRINKING WATER SUPPLY OF REPUBLIC OF MORDOVIA

2017 ◽  
pp. 41-43 ◽  
Author(s):  
A.V. Abramkin ◽  
R.S. Rakhmanov
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Water System ◽  
Drinking Water Supply ◽  
Surface Water Resources ◽  
Drinking Water System ◽  
Scientific Substantiation ◽  
Drinking Water Samples

Surface water resources of Mordovia Republic characterized by an inconstant output during a year, therefore, underground artesian waters use for household and drinking water supply. In 2009–2015 the quality of drinking water samples taken in 22 districts of Mordovia was unfavorable according to content of fluorine (taken in 13 districts and city of Saransk), iron (taken in 11 districts and city of Saransk), strontium (1 district), iodine was absent in all water samples. The main contaminant was fluorides, their level was up to 1,5–5,2 MAC. The development and scientific substantiation of hygienic actions on group and individual prevention of exposure to elevated concentrations of fluorine as well as iodine deficiency in human body are required.

ControllingLegionellain Hospital Drinking Water: An Evidence-Based Review of Disinfection Methods

2011 ◽  
Vol 32 (2) ◽  
pp. 166-173 ◽  
Author(s):  
Yusen E. Lin ◽  
Janet E. Stout ◽  
Victor L. Yu
Keyword(s):  
Drinking Water ◽  
Water System ◽  
Preventive Measure ◽  
Laboratory Assessment ◽  
Disinfection Methods ◽  
Point Of Use ◽  
Drinking Water System ◽  
Infection Control Practitioner ◽  
Legionnaires Disease ◽  
Hospital Acquired

Hospital-acquired Legionnaires' disease is directly linked to the presence ofLegionellain hospital drinking water. Disinfecting the drinking water system is an effective preventive measure. The efficacy of any disinfection measures should be validated in a stepwise fashion from laboratory assessment to a controlled multiple-hospital evaluation over a prolonged period of time. In this review, we evaluate systemic disinfection methods (copper-silver ionization, chlorine dioxide, monochloramine, ultraviolet light, and hyperchlorination), a focal disinfection method (point-of-use filtration), and short-term disinfection methods in outbreak situations (superheat-and-flush with or without hyperchlorination). The infection control practitioner should take the lead in selection of the disinfection system and the vendor. Formal appraisals by other hospitals with experience of the system under consideration is indicated. Routine performance of surveillance cultures of drinking water to detectLegionellaand monitoring of disinfectant concentrations are necessary to ensure long-term efficacy.

scholarly journals The removal of ammonia, arsenic, iron and manganese by biological treatment from a small Iowa drinking water system

2020 ◽  
Vol 6 (11) ◽  
pp. 3142-3156
Author(s):  
Darren A. Lytle ◽  
Daniel Williams ◽  
Christy Muhlen ◽  
Eugenia Riddick ◽  
Maily Pham
Keyword(s):  
United States ◽  
Drinking Water ◽  
Distribution System ◽  
Biological Treatment ◽  
Water System ◽  
System P ◽  
Drinking Water System ◽  
Iron And Manganese

Although not regulated in United States drinking water, ammonia has the potential to increase chlorine consumption and cause nitrification problems in the distribution system.

scholarly journals Influence of an Extended Domestic Drinking Water System on the Drinking Water Quality

Water ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 582 ◽  
Author(s):  
Ljiljana Zlatanović ◽  
Aleksandra Knezev ◽  
Jan van der Hoek ◽  
Jan Vreeburg
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water System ◽  
Drinking Water Quality ◽  
Drinking Water System
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