Drinking Water Articles on Environmental XPRT

Coagulation and flocculation in the Helsinki drinking water treatment plant

The raw water for Finland’s capital Helsinki is pumped from Lake Päijänne, located approximately 120 km away, via a tunnel to two water treatment plants, where it is treated and purified. This secures sufficient drinking water of excellent quality for around one million people. In the drinking water treatment plant in Vanhakaupunki 18 HYPERCLASSIC® Evolution7 mixers and three ...

Oct. 17, 2017

By INVENT Umwelt-und Verfahrenstechnik AG

Singapore a model for effective water management

Singapore continues to be a model of effective water management as more and more countries begin experiencing water scarcity. To some, the Asian city-state (which occupies an area roughly a quarter the size of Rhode Island) may seem an unlikely beacon for water efficiency. But, to achieve water security and self-sufficiency, residents have been helping leaders meet national water management ...

Feb. 17, 2017

By Fluence Corporation

What is turbidity?

Turbidity measures the relative clarity of a water sample. It is determined by the amount of scattering that occurs when a light source is shined through a water sample. Light scattering is caused by increased concentrations of suspended particles in water that are not individually visible to the naked eye, which can give the water a cloudy appearance. This parameter is used as a general ...

Oct. 17, 2017

By MANTECH

Drinking Water Quality

Drinking water or potable water is water of sufficiently high quality that it can be consumed or used without risk of immediate or long term harm. In most developed countries, the water supplied to households, commerce and industry is all of drinking water standard, even though only a very small ...

Jun. 20, 2011

By IWA Publishing

Drinking water - India

EconoPure Water Systems EconoPure Water Systems (formerly DVX Water Technologies, LLC) designs and manufactures highly economical, scalable, low-fouling membrane systems. The Company leverages the unique low-fouling nanofiltration (“LFNano”) system consisting of a unique membrane element that is designed to avoid particulate fouling, biofouling, and scaling. As the name suggests, ...

Jul. 17, 2012

By EconoPure Water Systems, LLC

Biocorrosion in drinking water pipes

Copper is widely used in drinking water distribution systems due to its relatively low cost and favorable mechanical properties. However, copper corrosion may generate copper concentrations exceeding the thresholds prescribed by international drinking water standards. In-situ measurements performed in an actual system found that the copper mass released under flowing water conditions (pipe ...

Feb. 18, 2016

By IWA Publishing

Lead in the environment and in drinking water

Everywhere you look metal lead is in the headlines. The majority of the recent press attention however, has not focused in lead in contaminated water, air, or soil but rather on high concentrations of lead found in toys and children?s jewelry that have been produced in developing countries where lax standards apply. Regardless of the particular source of lead contamination, the fact is lead can ...

Oct. 7, 2010

By Industrial Test Systems, Inc.

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 ...

Nov. 1, 2013

By Boode Waterwell Systems

Determination of Bisphenol A in Drinking Water

A comprehensive sample preparation and analytical procedure was developed for determining BPA in drinking water. This fast procedure employed materials and techniques selected in part for speed, but also those that would not contribute unwanted artifacts. The use of SPE allowed BPA to be extracted plus concentrated, which may result in greater method sensitivity compared to simple headspace or ...

Jun. 6, 2012

By MilliporeSigma

Drinking Water and Politics

You might be interested in a recent journal paper of mine that focuses on the impact of politics on drinking water. The paper seeks to address a growing lack of historical knowledge in the water industry of how European Union (EU) water policy has developed and been responded to. It also aims to overcome the lack of comparative studies that explore the ...

Apr. 16, 2012

By IWA Publishing

Drinking Water Quality

The quality of drinking-water is a powerful environmental determinant of health. Drinking-water quality management has been a key pillar of primary prevention for over one-and-a-half centuries and it continues to be the foundation for the prevention and control of waterborne diseases. Water is essential for life, but it can and does transmit disease in countries in all continents – from the ...

Mar. 8, 2012

By IWA Publishing

Manganese in Madison’s Drinking Water

Public concern over events of manganese-discolored drinking water and the potential for adverse health effects from exposure to excess manganese reached a high level in 2005. In response, Public Health Madison Dane County, together with the Madison Water Utility, conceived and implemented a public health/water utility strategy to quantify the extent of the manganese problem, determine the ...

Dec. 1, 2008

By National Environmental Health Association (NEHA)

Drinking Water Standards

The most important point of departure for drinking water standards is the World Health Organisation Guidelines for Drinking Water Quality. These are widely used throughout the world with the exception of parts of North America. WHO’s Guidelines have evolved over a period of 50 years from standards to guidelines, reflecting the fact that they have no legal force. The WHO emphasises that it ...

Jun. 17, 2011

By IWA Publishing

Monitoring Arsenic in Drinking Water

A Cogent OVA5000 online Heavy Metal analyser is being used to ensure compliance with national and company standards for the concentration of arsenic in drinking ...

Jun. 16, 2010

By Modern Water - Monitoring Division

Drinking water application notes

The Safe Drinking Water Act (SDWA) was passed in 1974 to protect the nation's public drinking water supply. The law allowed for the EPA to regulate the amount of certain contaminants that a body of water can contain. The Application Notes listed are designed to extract organic compounds in municipal drinking water for ...

Nov. 10, 2013

By Horizon Technology, Inc.

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 ...

Aug. 3, 2015

By Shimadzu Scientific Instruments Inc

Glyphosate and AMPA in drinking water

Carcinogenic or not? The broad-spectrum herbicide glyphosate is used all over the world in agriculture. Alongside farming, the chemical is also used for weed-killing in domestic gardens and in public and private spaces kept free from «vegetal invasion», such as railway tracks. Glyphosate has been used since the 1970s in pesticides and was hitherto thought to be harmless at ...

Sep. 28, 2016

By Metrohm AG

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 ...

Dec. 13, 2013

By MIT - Massachusetts Institute of Technology

Metals and Related Substances in Drinking Water

The contamination of drinking water by metals and metalloids can occur throughout the “source to tap” production and delivery system. The major problems are with arsenic, iron, nickel and lead. Problems can also occur with aluminium, copper, manganese, selenium and sodium. Arsenic, iron and lead are core parameters in the UN/WHO Protocol on Water and Health. The spectrum of ...

Apr. 2, 2012

By IWA Publishing

The comparative study of trihalomethanes in drinking water

Abstract: The purpose of this study was to assess exposure of four trihalomethanes (chloroform, bromodichloromethane, dibromochloromethane and bromoform) in drinking waters of Okinawa Island and Samoa. Trihalomethanes compounds were determined in the drinking water samples that were collected from the selected consumption sites and treatment plants of both Okinawa and Samoa in 2003-2004. The ...

Sep. 1, 2007

By Center for Environment and Energy Research & Studies (CEERS)

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