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FEATURE ARTICLES

Assessing Escherichia coli removal in the schmutzdecke of slow-rate biofilters
Michael Unger and M. Robin Collins
Water suppliers can use the findings in this article to improve the performance of existing biofilters by adjusting operations in ways that increase both biofilm growth and activity and protistan activity in the schmutzdecke.

Arsenic removal using oxidative media and nanofiltration
Kenneth W. Moore, Peter M. Huck, and Steve Siverns
Membranes are a promising technology for arsenic treatment because of their simple operation and minimal chemical requirements compared with other technologies.

Microfiltration and ultrafiltration membranes for drinking water
AWWA Subcommittee on Periodical Publications of the Membrane Process Committee
Because the use of microfiltration (MF) and ultrafiltration (UF) in potable water treatment applications has expanded rapidly—both in terms of capacity and number of installations—a comprehensive MF/UF resource for the water treatment industry has become imperative.

Evaluating surrogates for Cryptosporidium removal in point-of-use systems
Nur Muhammad, Rajib Sinha, E. Radha Krishnan, Haishan Piao, Craig L. Patterson, Joseph Cotruvo, Scott L. Cumberland, Vincent P. Nero, and Carol Delandra
This study evaluated the use of surrogates for measuring the microbial treatment performance of two point-of-use devices incorporating filtration with electrostatic charge interaction mechanisms.

Secondary effects of implementing arsenic removal treatment—focus on corrosion and microbial regrowth
Marc Edwards and Jeffrey L. Parks
A new protocol is proposed for detecting the limiting nutrient to microbial growth in drinking water to assist utilities in making treatment option decisions that won't trigger bacterial growth in the distribution system.

Incidence and Costs of Home Plumbing Corrosion
Ewa J. Kleczyk and Darrell J. Bosch
Information on factors associated with pinhole leak incidence and cost can help water utility managers formulate policies and programs to reduce pinhole leak occurrences, thus mitigating the negative financial and emotional effects of corrosion on individual households.

	2008 Journal Subject/Author/Reviewer Indexes Inside Insight — Filtration: A Phenomenal Process Current Issues — Agreement Shaping Revision of Total Coliform Rule Signed

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