water supply Articles

  • How big is the distributed energy opportunity for water and wastewater utilities?

    Energy costs for water utilities are large, and growing Energy is a significant cost for many water utilities, and costs are growing as more energy-intensive forms of water supply, including desalination, are being used. Energy is typically the second-largest utility budget item in developed countries, after labour. In many developing countries, energy can account for 70% or even more, of ...

  • Control Algae and Improve the Water Quality in Waste Stabilization Ponds

    Due to population growth, accelerated urbanisation and economic development, the quantity of waste water generated is increasing globally. Mainly in low-income areas, a large proportion of the waste water is discharged directly in the environment. When the waste water is treated, the treatment plants may not remove certain pollutants that can have a negative impact on the people and ecosystem. ...


    By LG Sonic

  • Advancements in Scaling Calculations and an in depth look at Antiscalant dosing for stressed waters and high recovery systems

    Abstract Over the past few decades the Reverse Osmosis (RO) industry has observed an increase in applications in challenging waters. Water sources that were never considered suitable for RO are now commonplace, including municipal waste streams, industrial waste, and even mining waste. Furthermore, regulatory restrictions, environmental obligations, solid waste expenses, and water supply ...


    By Avista Technologies

  • The design and build of a process and wastewater treatment plant - Inlet: 900 mc/h - Case Study

    The client Ferrara Food, part of the S.F.I.R. group, is a company operating in the agro-industrial sector. More specifically Ferrara Food operates within the preserved food industry, specialising in tomato processing, from fresh product to semi-finished and finished products. Semi-finished products can be 200kg containers, or 1200kg bigbags, filled through an ...


    By IDRAFLOT

  • Wastewater and groundwater

    Nearly 25 percent of the population in the United States—in more than 25 million homes—disposes of wastewater through onsite, or unsewered, systems that return treated effluent to the ground. This is an important public health issue because many of those same homes use wells that rely on groundwater for the drinking water supply. With ...

  • Maintaining a pressure reducing valve: 5 things to check

    Like your car, your body and nearly every appliance you own, control valves require regular maintenance to continue working efficiently. However, due to budget and time constraints, we don’t always give our valves the TLC they need to perform at their best. Unfortunately, ignoring pressure reducing valves can mean serious ...


    By Singer Valve Inc.

  • How a Specialized Automatic Control Valve Solved Flooding

    The Colombian area of Antioquia creates much of its clean power from hydropower plants along the Guadalupe River. The Guadalupe IV hydroelectric plant generates power with three vertical axis turbines that discharge water below the river level. To prevent flooding, however, the plant needed a solution that ensured the ejector ...


    By Singer Valve Inc.

  • Pharmaceuticals and water supply

    Prescription Drugs have been detected in water supply systems of major cities in the United States including Europe, Canada, Australia and Asia.  In addition, quantities of antibiotics, steroids, antidepressants, and hormones are also present in the water supply (Doro-on, 2011).  These new emerging contaminants are designed with small concentrations that can generate specific health ...


    By IWA Publishing

  • Alternative Water Supply Systems

    Alternative Water Supply Systems covers technical, social, financial and institutional aspects associated with decentralized alternative water supply systems. These include systems for greywater recycling, rainwater harvesting, recovery of water through condensation and sewer mining. A number of case studies from the UK, the USA, Australia and the developing world are presented to discuss ...


    By IWA Publishing

  • Optimising the water supply network

    Untitled Document The city of Crema sits on the Serio River south east of Milan in Northern Italy and has a population of approximately ...


    By Innovyze

  • Augmenting Water Supply Systems

    Direct use of recycled water to augment urban water supply systems entails pumping water into the distribution system or blending with the conventional supply at the water treatment plant. The recycled water needs to be treated to drinking water standards or better, including advanced treatment processes to remove trace organics and chemicals. The City of Windhoek in ...


    By IWA Publishing

  • The peak oil crisis and water supply

    Much is being made about the 'Peak Oil Crisis' in the media today. Gasoline and natural gas prices are high and continue to rise. But what is the 'peak oil crisis' and how does it impact our water supply?Peak Oil is discussed and defined in an excellent book by Kenneth S. Deffeyes entitled “Beyond Oil, The View from Hubbert's Peak”. As Mr. Deffeyes notes:'The supply of oil in the ground is not ...


  • Geodrilling: Managing Water Supply in Italy

    In recent years there has been significant reorganisation in the Italian water sector to conform to the rules set out in the European Union Water Directive concerning the control of water pollution and the consistency of water tariffs. There have been some successes, particularly where companies in the industrial and commercial sectors, who manage their own water supplies, have had some ...


    By Geoquip Water Solutions

  • Performance indicators for water supply management

    In the present study specific performance indicators are proposed that express the level of service of a water system subjected to varying operating conditions over time. The proposed methodology has been applied to a specific case study (Sinni water supply system in Basilicata – Italy) to demonstrate the real applicability of the proposed performance analysis that could be very useful to ...


    By IWA Publishing

  • Structural conditions in German water supply

    Against the background of price controls for drinking water supply utilities in Germany, the comparability of utilities with regard to their specific structural conditions comes into focus. Relevant structural conditions were identified for the two main technical processes, namely water production (WP) and treatment, storage and distribution (TSD). A defined clustering process for comparable ...


    By IWA Publishing

  • Water supply planning & environmental studies

    Client: U.S. Fish & Wildlife Service Completion Date: 1998 Services Provided Surface water modeling Groundwater modeling Storage reservoir siting and assessment Facility modifications Water supply alternative evaluations Water quality analysis Hydrology and hydraulics ...


    By Burns & McDonnell

  • Impact of intermittent water supply on water quality in Lebanon

    Lebanon in general and its capital, Beirut, suffer from water shortage due to the increasing water demand and the lack of proper management despite its abundant water resources. An intermittent water supply strategy was implemented in order to minimise deficiency problems. This, however, can seriously affect water quality due to the potential suction of non-potable water by negative pressures, ...


    By Inderscience Publishers

  • Integrated local water supply plan

    Client: City of Wichita, Kan. Completion Date: June 2001  Services Provided Water supply planning Evaluation of alternatives Cost estimating Economic comparison Environmental studies (NEPA) Program management Hydrogeologic engineering Water quality monitoring ...


    By Burns & McDonnell

  • Homeland Security for Drinking Water Supplies

    As it has done with other jurisdictions, Congress has recently passed legislation aimed at protecting our nation's drinking water resources. Historically, water supply protection has been a high priority, including reservoir protection, continuous monitoring, and secure and redundant facilities to ensure an uninterrupted supply of drinking water. The Clean Water Act (1972), requires pollution ...


    By AECOM

  • Demand management in urban water supply

    Since the 1930s, the drinking water supply of the Rabat-Casablanca coastal area has depended on water transfers from groundwater, from Maamora, and surface water, from the Bou Regreg Basin. Assessments carried out during the 1980s, based on patterns of water use at that time, showed that by 2010, transfers ...


    By IWA Publishing

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