Coliform Articles
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Influencing factors in the occurrence of injured coliforms in the drinking water distribution system in the city of La Plata, Argentina
The objective of this study was to evaluate the influencing factors in the occurrence of coliforms in the drinking water in La Plata (Argentina) from June 1999 to June 2001. A total of 180 samples were collected from Rio de La Plata (102 samples) and Puelche Aquifer (78 samples); 45 samples were collected for each of the four seasons. The membrane filter procedure was used for isolating bacteria, ...
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Hand-pumps as reservoirs for microbial contamination of well water
The retention and release of total coliforms and Escherichia coli was investigated in hand-pumps removed from tubewells tapping a faecally contaminated aquifer in Matlab, Bangladesh, and from a new hand-pump deliberately spiked with E. coli. All hand-pumps were connected to reservoirs of sterile water and flushed. Faecal coliforms were observed in the discharge from all three of the previously ...
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Applicability of domestic grey water reuse for alleviation of water crisis in Dhaka City
Overdependency on ground water resources for meeting the daily water demand in Dhaka City is leading to excessive pressure on ground water aquifer systems and is deepening the ground water table every year. This paper focuses on how reuse of grey water generated from different sources of domestic purposes every day can alter the considerable daily water demand in this city. Sampling and ...
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Project - Grant Hill WWTP
Project: Residential Development Location: Maple Ridge, BC Capacity: 106 m3/d (28,000 gpd) Contract: Design-Build-Operate Key Features: Modular and Expandable; Class A Effluent; Good Neighbour Unobtrusive This advanced wastewater treatment plant serves 110 Residential Units. It has been designed to be built in two phases. Phase 1 of the plant was completed in 2013, and Phase 2 was in ...
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Microbial contamination in groundwater supply in a cold climate and coarse soil: case study of norovirus outbreak at Lake Mývatn, Iceland
This paper explores the fate and transport of microbial contamination in a cold climate and coarse aquifers. A confirmed norovirus outbreak in a small rural water supply in the late summer of 2004, which is estimated to have infected over 100 people, is used as a case study. A septic system, 80 m upstream of the water intake, is considered to have contaminated drinking water. Water samples ...
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Application of risk-based assessment and management to riverbank filtration sites in India
This is the first reported study of a riverbank filtration (RBF) scheme to be assessed following the Australian Guidelines for Managed Aquifer Recharge. A comprehensive staged approach to assess the risks from 12 hazards to human health and the environment has been undertaken. Highest risks from untreated ground and Ganga River water were identified with pathogens, turbidity, iron, manganese, ...
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Microbiological assessment of private groundwater-derived potable water supplies in the Mid-West Region of Ireland
Determining the likelihood that groundwater contains faecal coliforms can aid water resource management in facilitating the protection of drinking water supplies. This study assesses the incidence of the faecal indicator organism Escherichia coli in 125 private water supplies (PWSs) serving individual houses in the Mid-West Region of Ireland. Two factors, aquifer type and rainfall (mm), were ...
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UNSW Village Green Kensington, NSW - Australia - Case Study
Sydney's attention has recently focused on the UNSW Village Green where stormwater is now being harvested to recharge and balance groundwater supplies. This stormwater diversion and reuse project was initiated byUNSW Facilities personnel as part of consent conditions for development on campus. The new system directs runoff from 65% of the campus through gross pollutant traps to a large Atlantis ...
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Home, Sweet Wastewater Building
How can a wastewater treatment plant embedded into a neighborhood not use much landmass and be environmentally friendly and user-friendly all at the same time? One system aims to do all of the above. Why should a wastewater treatment plant always have to look like, well, a wastewater treatment plant? A visual trip through project files of Aqueonics Inc., based in Greenville, SC, reveals photos ...
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