drinking water unit Articles

  • The Future of Drinking Water

    Predicted future growth in population numbers and rising sea levels mean demand for drinking water will continue to increase just as the natural availability of freshwater decreases. It is likely that brackish groundwater will be an important source of drinking water in the future, but the current methods used to produce fresh water from this source are expensive in terms of their energy use and ...


    By Boode Waterwell Systems

  • Drinking Water Analysis Guide

    Public Water Systems (PWS), regulated by the United States Environmental Protection Agency (USEPA), provide drinking water to 90% of Americans. Water systems and laboratories testing drinking water for Safe Drinking Water Act (SDWA) compliance must be certified and must use USEPA approved methods, which are developed by the USEPA, other government agencies, universities, consensus method ...

  • Water, water everywhere: But is there enough to drink?

    Original story at MIT News At MIT, experts address the challenges of supplying clean, safe water to a growing world population. The challenge of supplying clean, safe drinking water to an expanding world population comes down to money, MIT economist Franklin Fisher ...

  • Modelling of haloacetic acid concentrations in a United Kingdom drinking water system

    Haloacetic acids (HAAs) are formed during the chlorination of water containing organic matter but predictive models for their formation are not well established at present and have not been applied to UK water systems. In this paper two different modelling approaches have been applied and evaluated to a selected UK drinking water system. The first approach involved the development of statistical ...


    By IWA Publishing

  • Report to Congressional Requestors: Drinking Water

    Every day in the United States, at least 2 billion gallons of fluids are injected into over 172,000 wells to enhance oil and gas production, or to dispose of fluids brought to the surface during the extraction of oil and gas resources. These wells are subject to regulation to protect drinking water sources under EPA’s UIC class II program and approved state class II programs. Because much ...


    By IWA Publishing

  • The Benefits of Biological Treatment for Drinking Water

    The biological treatment of drinking water is undertaken using both organic and inorganic contaminants, and can be used to treat groundwater and surface water. These contaminants, contrary to what the name implies, are applied to strip away the factors that make the water unsafe for drinking until it is potable—meaning drinkable. If you would like to learn more about the benefits of ...

  • Case study Madagascar - independent drinking water solution

    Client ADES Solaire, Switzerland (NGO) Location ADES Centre in St. Augustin, Madagascar Introduction The island Madagascar is suffering from a high rate of poverty. Most of the people have no access to clean drinking water. In 2009 ADES and its supporters established a pilot project for the use of renewable energy for ...


    By Trunz Water Systems AG

  • Testing and developing energy harvester systems for operation of energy-self-sufficient measurement and control units in drinking water supply

    In recent years, wireless measurement and control units have become more popular for monitoring water distribution systems in the drinking water supply. Electric power supply for a higher number of devices through fixed connections to the public electrical grid is technically complex and requires large investments. Powering monitoring devices, which are installed in areas where electrical ...


    By IWA Publishing

  • Grundfos Alldos provides clean drinking water in Athens

    In time for the Olympic Games, Grundfos Alldos equipped the four existing Athens water treatment plants in Galatsi, Melindi, Kiourka and Aspropyrgos with state-of-the-art disinfection systems and put them into operation. In order to ensure that everything ran smoothly, a cutting-edge SCADA system was installed for remote monitoring. This means that plants, sometimes 40 km apart, can be monitored ...


  • Surveillance and Improvement of Peruvian Drinking Water Case Study

    The surveillance and quality control of public water supplies are vital prerequisites for the protection of public health. In practice however, the two activities of surveillance and quality control are often confused and inadequately implemented, especially in the case of surveillance in less developed countries. The two are clearly distinguished by the World Health Organization (1984): ...


    By DelAgua Group

  • New DWI guidelines for UV drinking water disinfection

    atg UV, has seen increasing interest in the application of UV systems for the treatment of drinking water applications since the UK Drinking Water Inspectorate (DWI) released their ‘Guidance on the use of Ultraviolet (UV) Irradiation for the Disinfection of Public Water Supplies' February 2010. With systems treating in excess of 2000 m3/hr daily, Ultraviolet disinfection is no longer an ...


    By atg UV Technology

  • Giardiasis in the United States – an epidemiologic and geospatial analysis of county-level drinking water and sanitation data, 1993–2010

    Giardiasis is the most commonly reported intestinal parasitic infection in the United States. Outbreak investigations have implicated poorly maintained private wells, and hypothesized a role for wastewater systems in giardiasis transmission. Surveillance data consistently show geographic variability in reported giardiasis incidence. We explored county-level associations between giardiasis ...


    By IWA Publishing

  • Oxidation and volatilization of bromide by electrolysis in drinking water

    To reduce the concentrations of brominated disinfection by-products, a process is presented here which removes bromide from a widely used surface water source, the California State Water Project (SWP). The process consists of oxidizing bromide to bromine and volatilizing the bromine. SWP water was passed through this unit under various conditions and the bromide was oxidized and volatilized under ...


    By IWA Publishing

  • Ensuring safe drinking water case study

    Challenge: A state environmental agency contracted with Antea Group to assist in the execution of a state-wide clean drinking water program. Program objectives included the development of an efficient and standardized program to monitor for chemical and biological contaminants across more than 6,500 public water systems. ...


    By Antea Group - USA

  • Treating drinking water with 99% removal - Case Study

    QED E-Z Tray® Air Stripper Treating Drinking Water with 99% Removal in Cedarburg, Wisconsin In October 2011, the Cedarburg, Wisconsin Light and Water Utility installed a QED E-Z Tray® (U.S. Patent Number 5,518,668) Air Stripper in a discreet addition to their existing production pump building. The E-Z Tray 72.6 handles a flow rate of ...


    By QED Environmental Systems

  • Volatile organic compounds in the nation’s ground water and drinking-water supply wells

    ABSTRACT Volatile organic compounds (VOCs) are produced in large volumes and are associated with a myriad of products, such as plastics, adhesives, paints, gasoline, fumigants, refrigerants, and drycleaning fluids. Widespread and long-term use of VOCs and their ability to persist and migrate in ground water raise questions about possible adverse effects on the environment, including ...

  • Chemically activated cow bone for increased fluoride removal from drinking water

    Thermally activated cow bone is widely utilized for treating fluoride impacted drinking water to meet the World Health Organization guideline value of 1.5 mg/L. However, the fluoride removal capacity of bone char is low, leaving room for further improvement. This study, therefore, strives to improve the fluoride adsorption capacity of cow bone by using chemical activation in place of thermal ...


    By IWA Publishing

  • Assessing clarity of message communication for mandated USEPA drinking water quality reports

    The United States Environmental Protection Agency mandates that community water systems (CWSs), or drinking water utilities, provide annual consumer confidence reports (CCRs) reporting on water quality, compliance with regulations, source water, and consumer education. While certain report formats are prescribed, there are no criteria ensuring that consumers understand messages in these ...


    By IWA Publishing

  • Sustainable power and innovation provide clean drinking water and energy

    In many areas in Kenya, access to clean drinking water is lacking. About 88% of the population must travel long distances to get to the nearest source of clean water or is forced to drink contaminated water. Children in particular suffer from waterborne diseases. Systems Provide Energy-Independent Water Treatment To try to provide a long-lasting solution for the drinking water needs ...


    By Trunz Water Systems AG

  • Drinking Water: Understanding the science and policy behind a critical resource

    Water is one of those things that people usually take for granted—until it is either gone or unsuitable to drink. In 2007, residents in the southeastern United States were forced to take notice of water when extreme drought swept across the region. With no rain clouds on the horizon for months on end, lawns were shriveling and long-standing reservoirs were being sucked dry. Restaurants began ...

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