COVID-19 NWSS Wastewater Monitoring in the U.S.

Updated December 12, 2024
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Wastewater (sewage) can be tested to detect traces of infectious diseases circulating in a community, even if people don’t have symptoms. You can use these data as an early warning that levels of infections may be increasing or decreasing in your community.

About CDC’s Wastewater Program (NWSS)

How Wastewater Monitoring Works

Wastewater Monitoring Data

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CDC’s National Wastewater Surveillance System (NWSS) program collects and displays wastewater data from communities across the United States.

Most communities are reporting no detection of mpox in wastewater.

Consistent detection 0 sites (0%)

Intermittent detection 0 sites (0%)

No detection 399 sites (95%)

No recent data 23 sites (5%)

See the data
Mpox virus detection in wastewater in the past 4 weeks, United States
Mpox map

Wastewater Data

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