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drinking water

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National trends in drinking water quality violations
Maura Allaire, Haowei Wu, and Upmanu Lall

PNAS February 27, 2018 115 (9) 2078-2083; first published February 12, 2018. https://doi.org/10.1073/pnas.1719805115
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Assessment of the Legionnaires’ disease outbreak in Flint, Michigan
Sammy Zahran, Shawn P. McElmurry, Paul E. Kilgore, David Mushinski, Jack Press, Nancy G. Love, Richard C. Sadler, and Michele S. Swanson

PNAS February 20, 2018 115 (8) E1730-E1739; first published February 5, 2018. https://doi.org/10.1073/pnas.1718679115
Open Access
Freshwater salinization syndrome on a continental scale
Sujay S. Kaushal, Gene E. Likens, Michael L. Pace, Ryan M. Utz, Shahan Haq, Julia Gorman, and Melissa Grese

PNAS January 23, 2018 115 (4) E574-E583; first published January 8, 2018. https://doi.org/10.1073/pnas.1711234115
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Hydraulic fracturing near domestic groundwater wells
- From the Cover
Scott Jasechko and Debra Perrone

PNAS December 12, 2017 114 (50) 13138-13143; first published November 27, 2017. https://doi.org/10.1073/pnas.1701682114
Open Access
Cohn’s Crenothrix is a filamentous methane oxidizer with an unusual methane monooxygenase
- From the Cover
Kilian Stoecker, Bernd Bendinger, Björn Schöning, Per H. Nielsen, Jeppe L. Nielsen, Christian Baranyi, Elena R. Toenshoff, Holger Daims, and Michael Wagner

PNAS February 14, 2006 103 (7) 2363-2367; first published February 1, 2006. https://doi.org/10.1073/pnas.0506361103