Domestic Water Treatment Articles

  • Sodium hypochlorite dosage for household and emergency water treatment: updated recommendations

    Household water treatment with chlorine can improve the microbiological quality of household water and reduce diarrheal disease. We conducted laboratory and field studies to inform chlorine dosage recommendations. In the laboratory, reactors of varying turbidity (10–300 NTU) and total organic carbon (0–25 mg/L addition) were created, spiked with Escherichia coli, and dosed with 3.75 mg/L ...


    By IWA Publishing

  • Analysis of domestic water demand variables of a residential colony in Ajmer, Rajasthan (India)

    In this paper, significant variables of domestic urban water demand required for the purpose of estimation of urban water supply in five planned colonies of the City of Ajmer, Rajasthan, India, are identified. The data for these 16 variables are entered in the multiple linear regression (MLR) (stepwise) models in SPSS software, and domestic water demand models are developed. Based on these ...


    By IWA Publishing

  • An optical method for characterizing carbon content in ceramic pot filters

    Ceramic pot filter (CPF) technology is a relatively common means of household water treatment in developing areas, and performance characteristics of CPFs have been characterized using production CPFs, experimental CPFs fabricated in research laboratories, and ceramic disks intended to be CPF surrogates. There is evidence that CPF manufacturers do not always fire their products according to ...


    By IWA Publishing

  • Water: the natural choice - safe, natural water delivers better comfort, lower cost

    Using water to heat or cool your building is the safest alternative, as hydronic systems can be installed and serviced by any licensed professional contractor. Because other refrigerants are toxic, they must be installed by specially trained technicians. You'll see those same technicians on expensive service calls installing factory replacement parts because components are not interchangeable ...


    By Evapco Inc.

  • Case study - BioReactor, residential area, Panama

    Project: New residential area System Type: BioReactor 200 Country: Panama Client: Rhino tech Capacity: 600 m³/day Year of Installation: 2015. Description: This new residential area is under construction and the plant are going to clean all the ...


    By BioKube A/S

  • Ceramic pot filters lifetime study in coastal Guatemala

    Ceramic pot filters (CPFs) are an effective means of household water treatment, but the characterization of CPF lifetimes is ongoing. This paper describes a lifetime field study in Guatemala which was made possible by a collaboration between researchers, CPF-using households, and local non-governmental organizations (NGOs). Disinfection data were collected periodically for two years using ...


    By IWA Publishing

  • Urban domestic water pricing in India and China

    Despite significant differences in political and administrative structures, recent reforms in urban domestic water tariff regimes in India and China have had similar trajectories with important but sometimes nuanced differences. In both countries, there has been a devolution of operational authority to municipal governments and acceptance of greater reliance on cost recovery through user fees. ...


    By IWA Publishing

  • Antibacterial and antiviral effectiveness of two household water treatment devices that use monobrominated hydantoinylated polystyrene

    Many different household water treatment (HWT) methods have been researched and promoted to mitigate the serious burden of diarrheal disease in developing countries. However, HWT methods using bromine have not been extensively evaluated. Two gravity-fed HWT devices (AquaSure™ and Waterbird™) were used to test the antimicrobial effectiveness of HaloPure® Br beads (monobrominated hydantoinylated ...


    By IWA Publishing

  • Demand for domestic water from an innovative borehole system in rural Ghana: stated and revealed preference approaches

    This study investigates demand for domestic water supply from an innovative borehole system using the contingent valuation method (CVM). We further estimate demand for current service of domestic water supply in residences using the hedonic pricing method (HPM). This is achieved through a survey from rural districts of the Greater Accra Region, Ghana. Interval regression and ordinary least ...


    By IWA Publishing

  • A stochastic model for daily residential water demand

    Residential water demand is a random variable which influences greatly the performance of municipal water distribution systems (WDSs). The water request at network nodes reflects the behavior of the residential users, and a proper characterization of their water use habits is vital for the hydraulic system modeling. This study presents a stochastic approach for the characterization of the ...


    By IWA Publishing

  • Assessing the impact of property size on residential water use for selected neighbourhoods in Lilongwe, Malawi

    Malawi has one of the highest urbanisation rates in Africa, with an urban housing approach that favours large residential plot sizes. The impact of plot size on residential water use was evaluated by examining water use records, obtained for the period between January 2009 and December 2014, for formal residential properties in the city of Lilongwe. Water use increased with plot size in line ...


    By IWA Publishing

  • Change Is On the Horizon

    Late last year, the U.S. Department of Energy (DoE) enacted the Energy Conservation Standard for Pumps for all domestic pumps. The first of their kind for the pump market, these standards set the minimum efficiency for a given pump model and will lead to a significant share of currently installed pumps to be replaced with higher efficiency models. Glenn Wieczorek, Tsurumi’s managing ...


    By Modern Pumping Today

  • Pharmaceuticals in water fact sheet

    Recent events have led to a growing concern regarding trace pharmaceutical compounds found in drinking supplies across the United States. While pharmaceuticals have been detected in amounts far below the levels considered harmful to humans and there is no evidence demonstrating these pharmaceuticals pose a significant health risk to humans, we understand many consumers will want to protect their ...

  • Understanding water fact sheet

    Nearly 326 million trillion gallons of water cover more than 70 percent of the Earth, making it the most common element on the planet. Water is the only resource found naturally as a solid, liquid and gas. The atmosphere carries 40 trillion gallons of water across the country and drops 40 percent of its moisture as precipitation every day. All of this water helps regulate the temperature and ...

  • Amble - Fire Back Boiler case study

    Customer: Mr. B. Melville Location: Amble, Northumberland Heating System: Baxi fire back boiler with cylinder Installed: 09/07 Problems: System very old and inefficient slow to heat and recover particularly domestic hot water Solution. Install Vortex. ...


    By Vortex Energy Saver

  • Thorpe - Condensing Combi-Boiler case study case study

    Customer: Mrs M Adams Location: Thorpe Willoughby, Selby Heating System: Worcester Greenstar Condensing Combination Gas Boiler Installed: 03/08 Property: 4 Bedroom Bungalow with Granny Flat. Problem This customer had an older system that needed ...


    By Vortex Energy Saver

  • Assessment of the impact of water parameters on the flow rate of ceramic pot filters in a long-term experiment

    Poor water quality is a major contributing factor to disease in developing countries. Silver-coated ceramic pot filters (CPFs) are a relatively common form of household water treatment system (HWTS) representing an effective and sustainable technology for poor communities. Water production seems to be the major limiting factor of the CPF's lifetime and sustainability since low flow rates do ...


    By IWA Publishing

  • Distribute and Sell in China's Residential Water Treatment Market

    Are you considering selling or distributing in the Chinese water market?  Download our report on the Chinese residential water treatment market and learn about: The state of China's water Key market developments Market entry and IPR protection Obtaining Product Certification Foreign and Domestic product offerings ...


    By Launch Factory 88

  • Detection of human enteric viruses in Umgeni River, Durban, South Africa

    The prevalence of adenovirus (AdV), rotaviruses (RV) and enteroviruses (EV) in Umgeni River waters of Durban, South Africa was assessed qualitatively and quantitatively during April 2011 to January 2012 using polymerase chain reaction (PCR)/reverse transcription-polymerase chain reaction (RT-PCR), nested PCR and quantitative PCR (qPCR), as well as nested integrated cell culture PCR (nested ...


    By IWA Publishing

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