COVID-19 NWSS Wastewater Monitoring in the U.S. | National Wastewater Surveillance System

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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

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

COVID-19 MPOX

See the data

Most communities are reporting no detection of mpox in wastewater.

Consistent detection Info from CSV

Intermittent detection Info from CSV

No detection Info from CSV

No recent data Info from CSV

See the data

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

Wastewater Data

COVID-19 Wastewater Data
Mpox Wastewater Data
CDC’s Wastewater (NWSS) Program
How Wastewater Monitoring Works
Progress in the US
About Wastewater Data

Partner Resources

Sampling Strategy
Testing Methods
Data Reporting and Analytics
Interpretation and Use
Communication Resources

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