Drinking water for Arizona community gets quality boost from Dow Water & Process Solutions

MINNEAPOLIS, MN, Aug. 12, 2009 -- Although residents of the Village of Oak Creek near Sedona, Ariz., a city at the southern end of the magnificent Oak Creek Canyon, might not be able to "taste" the difference, their drinking water has recently got a quality boost...

MINNEAPOLIS, MN, Aug. 12, 2009 -- Arsenic content in drinking water has been regulated in the United States since 1942, when the Public Health Service established a standard of 50 parts per billion (ppb). In January 2006, a new standard of 10 ppb was mandated by the Environmental Protection Agency, and municipal water suppliers in the states with higher detectable arsenic levels in groundwater have been investigating technologies to protect water quality and reach compliance with the new regulations.

Although residents of the Village of Oak Creek near Sedona, Ariz., a city at the southern end of the magnificent Oak Creek Canyon, might not be able to "taste" the difference, their drinking water has recently got a quality boost. Thanks to several water treatment systems, supplied by GEcom Inc., of Mesa, Ariz., that uses ADSORBSIA™ GTO™ arsenic removal media from Dow Water & Process Solutions, the arsenic level in the more than 400,000 gallons from Big Park Water Company and an additional 32,000 gallons per day (gpd) from Little Park Water Company of potable water supplied daily to 3,100 households in Sedona has been lowered to less than 10 ppb from the previous 25 ppb. The treatment allows for higher quality drinking water for approximately 8,000 residents of the Village of Oak Creek.

Big Park Water Company, the principal provider of water utility service for the community of the Village of Oak Creek, decided on the system incorporating ADSORBSIA media after extensive research of products and technologies for the removal of arsenic.

"We couldn't afford to make mistakes in selecting the best available technology," said Steve Gudovic, president of Big Park Water Company. "The titanium-based ADSORBSIA media proved to be the most effective and efficient arsenic removal option for us."

"When choosing the equipment and the technology for arsenic removal, water utilities look for a good return on their investment in terms of performance and economics" said Alan Greenberg, product line manager, Dow Water & Process Solutions. "ADSORBSIA media provides a reliable, cost-advantaged and flexible solution that works equally well in both brand new installations and in previously installed equipment that was designed for other media."

ADSORBSIA media is a high-capacity non-regenerable single-use product, suitable especially for small or mid-sized systems. Eliminating the regeneration step frees operators from the hassles and cost of chemical storage and usage, and from waste stream disposal issues. Because of the media's exceptional affinity for arsenic, ADSORBSIA media maintains a strong hold on the removed arsenic, promoting easier and safer disposal. The nanocrystalline structure of ADSORBSIA media enables faster kinetics, allowing for smaller diameter vessels and a smaller system footprint.

"Compared with other commercially available arsenic removal media, ADSORBSIA media delivers improved overall performance and, because of a longer useful life than traditional adsorbent media, ensures more productive and economical operations," Greenberg said. "The system designed by GEcom takes advantage of the unique properties of ADSORBSIA media to deliver this extra capacity, without adding extra costs."

Designed and commercialized by Dow Water & Process Solutions, ADSORBSIA media is one of many innovative products that contribute to higher quality, affordable and sustainable water supplies for communities and industries worldwide.

About Dow Water & Process Solutions
Dow Water & Process Solutions has a 50 year legacy of providing innovative water and process solutions to both communities and industries alike. A differentiated business unit of The Dow Chemical Company, Dow Water & Process Solutions offers a broad portfolio of ion exchange resins, reverse osmosis membranes, ultrafiltration membranes and electrodeionization products, with strong positions in a number of major application areas, including industrial and municipal water, industrial processes, pharmaceuticals, power, residential water and wastewater and water reuse. More information about Dow Water & Process Solutions can be found at www.dowwatersolutions.com.

About Dow
Dow is a diversified chemical company that combines the power of science and technology with the "Human Element" to constantly improve what is essential to human progress. The Company delivers a broad range of products and services to customers in approximately 160 countries, connecting chemistry and innovation with the principles of sustainability to help provide everything from fresh water, food and pharmaceuticals to paints, packaging and personal care products. In 2008, Dow had annual sales of $57.5 billion and employed approximately 46,000 people worldwide. The Company has 150 manufacturing sites in 35 countries and produces approximately 3,300 products. On April 1, 2009, Dow acquired Rohm and Haas Company, a global specialty materials company with sales of $10 billion in 2008, 98 manufacturing sites in 30 countries and approximately 15,000 employees worldwide. More information about Dow can be found at www.dow.com

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