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ISSN, PRINT: 0003-150X
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Journal - American Water Works Association | JULY 2016, Volume 108, Number 7 
Flint, Michigan, water treatment plant and water tower seen through security chain link fence.CURRENT ISSUE FOCUS:
distribution systems

Recent events in Flint, Mich., have brought the issue of lead service lines and lead contamination of drinking water to the forefront. This month’s Journal carries an article by the co-chair of the Michigan governor’s task force and a roundtable discussion on Flint. The July issue also includes other articles on distribution—how faucet flow rates affect sampling, control of disinfection by-products in the farther reaches of a system, nitrification, and alternative system design.
Photo: Linda Parton /


periodic table symbols of manganese and iron over biological microscope organism background

National Survey of Lead Service Line Occurrence
David A. Cornwell, Richard A. Brown, and
Steve H. Via

This article summarizes findings from two AWWA-sponsored surveys of US community water systems that were conducted to gather information on lead-containing service lines (LSLs) in different regions of the United States for different sizes (population ranges) of water systems. The major objective of this research was to estimate the number of water systems with LSLs and the approximate number of LSLs nationwide and by region.

In the news

composite of ominous dark dripping water faucet and Flint River flowing through bleak landscape with Flint River road sign.
Photo bottom right: Linda Parton /

Why Flint Matters
Eric P. Rothstein, member of Michigan Governor’s Flint Water Advisory Task Force
This article describes the circumstances in Flint, Mich., and explains what they mean to water utility professionals, why Flint is not unusual, and what more the water industry can do to protect public health...

The Flint Crisis
Michael J. McGuire, Janice A. Beecher,
Mona Hanna-Attisha, Susan J. Masten, and
Joan B. Rose

In May 2016, Journal AWWA editor-in-chief Michael McGuire hosted a roundtable discussion on the water crisis in Flint, Mich....

advances in research

Composite of microscope and enlarged view of glowing green biofilm bacteria slide view.

Monochloramine Cometabolism by Nitrifying Biofilm Relevant to Drinking Water
David G. Wahman, Juan P. Maestre, and
Gerald E. Speitel Jr.

The study discussed in this article examined monochloramine cometabolism, extending previous research by simulating conditions found in distribution systems with the use of biofilm grown in annular reactors. The findings support the recommendation of maintaining minimum monochloramine residuals.

Author highlight

portrait of Madeline SnowJournal AWWA is proud of the talented authors who contribute to our publication. This month, we spoke with Madeline Snow, who coauthored the July 2016 article, “Innovation in the Water Sector: Pathway to Zero Net Energy.” Read more...

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