This dataset provides a complete time history of measles wastewater sample data and calculated metrics from US sampling locations. Learn more at: https://www.cdc.gov/nwss/index.html. This dataset is updated weekly on Fridays.

This dataset provides a complete time history of SARS-CoV-2 wastewater sample data and calculated metrics from US sampling locations. Learn more at: https://www.cdc.gov/nwss/index.html. This dataset is updated weekly on Fridays.

This dataset provides a complete time history of Influenza A wastewater sample data and calculated metrics from US sampling locations. Learn more at: https://www.cdc.gov/nwss/index.html. This dataset is updated weekly on Fridays.

This dataset provides a complete time history of mpox wastewater sample data and calculated metrics from US sampling locations. Learn more at: https://www.cdc.gov/nwss/index.html. This dataset is updated weekly on Fridays.

This dataset provides a complete time history of Avian Influenza A (H5) wastewater sample data and calculated metrics from US sampling locations. Learn more at: https://www.cdc.gov/nwss/index.html. This dataset is updated weekly on Fridays.

Upcoming change to the Respiratory Virus Wastewater Surveillance Dataset.

Concentrations of respiratory viruses in the Chicago sewer system as measured at seven sewershed sites since February 2022. In addition to SARS-CoV-2 (the virus that causes COVID-19), concentration data is also available for Respiratory Syncytial Virus (RSV), and influenza virus (types A and B). Generally, two samples are collected from each site during each week of the year. Concentration data reflect within-site and overall averages of this data each week. Because respiratory viruses are shed in human feces, tracking this data can help predict changes in disease trends and better understand the epidemiology of these common respiratory viruses in Chicago. Please note that one of the "sites" listed is "All sites," which combines the individual sites. Care should be taken when summing or otherwise aggregating rows to avoid double counting. These data are updated weekly and displayed on the Chicago Department of Public Health’s Respiratory Illness Dashboard. This dataset replaces COVID-19 Wastewater Detection, which will no longer be updated. See https://data.cityofchicago.org/stories/s/Wastewater-Surveillance-Datasets-3-5-2025/sihu-d8va for more information.

The California Department of Public Health (CDPH) is coordinating with wastewater utilities, local health departments, academic researchers, and laboratories in California on wastewater surveillance for infectious disease pathogens of interest to public health (such as SARS-CoV-2, the virus causing COVID-19, influenza, respiratory syncytial virus (RSV), mpox, and norovirus). Data collected from this network of participants, called the California Surveillance of Wastewaters (Cal-SuWers) Network, are submitted to the U.S. Centers for Disease Control and Prevention (CDC) National Wastewater Surveillance System (NWSS). Collecting and analyzing wastewater samples for the presence of, and amount of (concentration), a specified pathogen target can help inform public health about circulation of that infectious disease within a community. Data from wastewater testing do not replace existing public health surveillance systems but complement them. While wastewater surveillance cannot determine the exact number of infected persons in the area being monitored, it can provide overall trends of pathogen concentration within that community. Please note that data included in the Cal-SuWers Network and available here originate from multiple programs and laboratories. Methodologies for producing wastewater data are not currently standardized, and analyses, comparisons, and aggregations should be done with caution. Wastewater is a complex environmental sample and inherent variability in measured concentrations is expected due to environmental variability, day-to-day differences in sewershed and population dynamics, differences in the amount of shedding between people and pathogens, and laboratory and sampling variability. Please see the CDPH Cal-SuWers, CDC NWSS, and CDC Public Health interpretation and Use of Wastewater Surveillance data webpages for more information. Historical wastewater data can be found [here](https://data.ca.gov/dataset/covid-19-wastewater-surveillance-data-california).

This dataset contains the enterovirus genome copies measured per liter of sample and read counts obtained from amplicon sequencing of the VP1 and VP4 genes. This dataset is associated with the following publication: Brinkman , N., S. Fout , and S. Keely. Retrospective Surveillance of Wastewater To Examine Seasonal Dynamics of Enterovirus Infections. mSphere. American Society for Microbiology, Washington, DC, USA, 2(3): e00099-17, (2017).