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Volume 32, Supplement –Summer 2026

SUPPLEMENT ISSUE
Supplement

Progress and Expansion of the National Wastewater Surveillance System, United States, 2020–2024

Miguella Mark-Carew1Comments to Author , Megan Bias1, Stacie Reckling, Kaniz Madhobi, Daniel Cornforth, Igor Volkov, Andrew L. Rainey, Benjamin Lorentz, Kaitlin R. Taibl, Lisa P. Oakley, Rachel West, Rory Welsh, Jeffrey W. Mercante, Niketta Womack, Nicole Fehrenbach, and Jonathan Yoder
Author affiliation: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (M. Mark-Carew, M. Bias, K. Madhobi, D. Cornforth, A.L. Rainey, K.R. Taibl, L.P. Oakley, R. West, R. Welsh, J.W. Mercante, N. Womack, N. Fehrenbach, J. Yoder); Chenega Corporation, Anchorage, Alaska, USA (S. Reckling, I. Volkov); Goldbelt Professional Services LLC, Chesapeake, Virginia, USA (B. Lorentz)

Main Article

Figure 1

Geographic distribution of National Wastewater Surveillance System testing sites in the United States and territories, September 2020–December 2024. Each site is categorized by the number of viral targets tested during the specified period. Site coverage and viral target testing are shown for September 2020–December 2021 (A), 2022 (B), 2023 (C), and 2024 (D). US Census Regions are available from https://www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html. 

Figure 1. Geographic distribution of National Wastewater Surveillance System testing sites in the United States and territories, September 2020–December 2024. Each site is categorized by the number of viral targets tested during the specified period. Site coverage and viral target testing are shown for September 2020–December 2021 (A), 2022 (B), 2023 (C), and 2024 (D). US Census Regions are available from https://www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html. 

Main Article

1These first authors contributed equally to this article.

Page created: September 05, 2026
Page updated: September 15, 2026
Page reviewed: September 15, 2026
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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