A methodology for identifying vulnerable locations to taste and odour problems in a drinking water system

2007 ◽  
Vol 55 (5) ◽  
pp. 177-183 ◽  
Author(s):  
F. Proulx ◽  
M.J. Rodriguez ◽  
J. Sérodes ◽  
C. Bouchard
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Spatial Information ◽  
Tap Water ◽  
Water System ◽  
Mail Survey ◽  
Water Quality Monitoring ◽  
Geographical Information ◽  
Spatial Approach ◽  
Drinking Water System

In this research, methodology was developed to identify locations vulnerable to taste and odour problems in a distribution system. The methodology was based on a multicriteria procedure combining spatial information on consumer complaints and popular perception of tap water. The first step in the described methodology consisted of mapping complaints regarding tap water made by the population between 2002 and 2004 using a geographical information system (GIS). The second step consisted of analysing results of a questionnaire-based mail survey, also through GIS. The information generated using the above steps was integrated using a multicriteria and spatial approach allowing segregation of the distribution system into delineated zones, according to their vulnerability to occurrences of taste and odour problems. The identification of vulnerable sectors in a distribution system will help water managers to implement a better-targeted water quality monitoring programme – one that considers odours and tastes of drinking water – within the management process.

scholarly journals Design of drinkable tap water system at X Apartment, Jakarta

2018 ◽  
Vol 197 ◽  
pp. 13009
Author(s):  
Hariastuti Prameswari ◽  
Tazkiaturrizki ◽  
R Ratnaningsih
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Water System ◽  
Clean Water ◽  
Water Tank ◽  
Drinking Water System ◽  
Investment Cost ◽  
Tank System ◽  
The Cost ◽  
System Water

This design aims to contrive a plumbing system X Apartment, Jakarta with a separate clean water and drinking water system. Water supply system that applied to this apartment is roof tank system. Fluctuations in the use of clean water are used to determine the capacity of reservoirs and pumps using the equivalent apartments such as The Bellagio Residence Apartment, Four Winds Apartment, Tamansari Sudirman Apartment, and Setiabudi Residence Apartment. Total demand for clean water for the 1st and 2nd tower is 315.8 m3/day and 39 m3/day for drinking water with 216 m3 of ground water tank capacity. Transfer pumps work for 12 hour/day and the capacity of clean water roof tank for the 1st and 2nd tower are 67.5 m3 while for drinking water roof tank are 7.2 m3. System that has been chosen used 2 stand pipes for both clean water, drinking water, and booster pumps in each tower. This design concluded that The investment cost of clean water and drinking water system and also the construction of X Apartment reservoirs is Rp. 2.393.889.860 and the cost of drinking water that can be saved by residents when using drinkable tap water system is Rp. 874.656 per m3.

scholarly journals Persistence of Nontuberculous Mycobacteria in a Drinking Water System after Addition of Filtration Treatment

2006 ◽  
Vol 72 (9) ◽  
pp. 5864-5869 ◽  
Author(s):  
Elizabeth D. Hilborn ◽  
Terry C. Covert ◽  
Mitchell A. Yakrus ◽  
Stephanie I. Harris ◽  
Sandra F. Donnelly ◽  
...  
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Cold Water ◽  
Nontuberculous Mycobacteria ◽  
Treatment Plant ◽  
Water System ◽  
Drinking Water Treatment ◽  
Drinking Water System

ABSTRACT There is evidence that drinking water may be a source of infections with pathogenic nontuberculous mycobacteria (NTM) in humans. One method by which NTM are believed to enter drinking water distribution systems is by their intracellular colonization of protozoa. Our goal was to determine whether we could detect a reduction in the prevalence of NTM recovered from an unfiltered surface drinking water system after the addition of ozonation and filtration treatment and to characterize NTM isolates by using molecular methods. We sampled water from two initially unfiltered surface drinking water treatment plants over a 29-month period. One plant received the addition of filtration and ozonation after 6 months of sampling. Sample sites included those at treatment plant effluents, distributed water, and cold water taps (point-of-use [POU] sites) in public or commercial buildings located within each distribution system. NTM were recovered from 27% of the sites. POU sites yielded the majority of NTM, with >50% recovery despite the addition of ozonation and filtration. Closely related electrophoretic groups of Mycobacterium avium were found to persist at POU sites for up to 26 months. Water collected from POU cold water outlets was persistently colonized with NTM despite the addition of ozonation and filtration to a drinking water system. This suggests that cold water POU outlets need to be considered as a potential source of chronic human exposure to NTM.

Factors influencing public perception and use of municipal drinking water

2010 ◽  
Vol 10 (3) ◽  
pp. 472-485 ◽  
Author(s):  
F. Proulx ◽  
M. J. Rodriguez ◽  
J. B. Sérodes ◽  
L. F. Miranda
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Consumption ◽  
Distribution System ◽  
Tap Water ◽  
Geographical Information ◽  
Survey Respondent ◽  
Quebec City ◽  
Sampling Point ◽  
Consumption Profile

Despite more stringent regulations concerning drinking water quality in many countries, the public is increasingly concerned about the safety of municipal tap water. For this reason, acquiring a better understanding of consumer perception of tap water is an important issue for water authorities and utility managers. In this study, water consumption choice and profile were investigated. The case under study is the territory of a water supply system in Québec City (Canada). Data on drinking water consumption was obtained through a questionnaire-based survey. Survey results showed that an important proportion (about one third) of the population under study do not drink tap water. To explain consumption choice (tap water or not) and consumption profile (levels of tap water consumption), binary and ordinal logistic regression analyses (LGA) were performed based on survey responses and complementary data resulting from measurements of water quality parameters in 32 locations throughout the water distribution system. Water quality information was managed through a water quality index (WQI). The WQI of each sampling point was associated with the location of each survey respondent using a geographical information system (GIS). LGA results showed that the geographical location of the consumer within the distribution system, the WQI and perceived risk toward water consumption were the main factors explaining both the water consumption choice and tap water consumption profile.

scholarly journals The effectiveness of disinfection and flushing procedures to prevent coliform persistence in aircraft water systems

2018 ◽  
Vol 19 (5) ◽  
pp. 1339-1346
Author(s):  
Jeffrey Szabo ◽  
Mark Rodgers ◽  
Jatin Mistry ◽  
Joshua Steenbock ◽  
John Hall
Keyword(s):  
Drinking Water ◽  
Chlorine Dioxide ◽  
Glycolic Acid ◽  
Tap Water ◽  
Water System ◽  
Water Systems ◽  
Full Scale ◽  
Free Chlorine ◽  
Drinking Water System ◽  
The One

Abstract A full-scale reproduction of an aircraft drinking water system was conditioned using municipal tap water with a mixture of free chlorine and chloramines, and subsequently contaminated with coliforms. Disinfection was undertaken using chlorine dioxide, ozone and a mixed oxidant solution followed by flushing until no disinfectant residual remained. Results showed that coliforms were not persistent on the aircraft plumbing surfaces, and coliforms were not detected after disinfection and flushing with any disinfectant. The one exception was the aerator installed in the lavatory faucet, which was coliform positive after disinfection with ozone and mixed oxidants. These data suggest that the faucet aerators could be a source of coliform contamination that may result in coliform positive samples. Further experiments conducted on disinfection of aerators with glycolic acid and quaternary ammonia (both commonly used by the airlines) showed no detectable coliforms on coliform contaminated aerators after 30 minutes of soaking in the disinfectants.

scholarly journals 842First Primary Amebic Meningoencephalitis Death Associated with Exposure to Tap Water from a Treated Public Drinking Water System

2014 ◽  
Vol 1 (suppl_1) ◽  
pp. S241-S242
Author(s):  
Jennifer Cope ◽  
Raoult Ratard ◽  
Jonathan S. Yoder ◽  
Theresa Sokol ◽  
Jake Causey ◽  
...  
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Water System ◽  
Drinking Water System ◽  
Public Drinking Water ◽  
Public Drinking ◽  
Primary Amebic Meningoencephalitis

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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