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Wastewater monitoring results for the current week in Louisville-Jefferson County

Wastewater Monitoring Results

Since June 2020 Louisville’s Metropolitan Sewer District (MSD) and Louisville Metro Public Health and Wellness (LMPHW) have partnered with researchers from the University of Louisville's Envirome Institute to learn how sewage may indicate community health risk. We have collected thousands of samples from sewers from across Louisville looking for SARS-CoV-2, the virus that causes COVID-19. Together with county level clinical data, our sewers are helping us to understand how infection rates are related to important clinical indicators like new hospitalizations and ICU bed capacity.

 

Comparison of Wastewater Levels and Clinical Cases, Hospital Admissions, and Occupied ICU Beds (11/14/22)

In the charts below, we compare wastewater levels to indicators of health, clinical cases of COVID-19, new hospital admissions, and occupied ICU beds. The orange, yellow, and green bars in the last two charts show CDC designated risk thresholds.

  This graph shows the comparison between N1 levels of SARS-CoV-2 found in wastewater with positive clinical tests as reported to Louisville Metro Department of Public Health and Wellness. This week both wastewater and clinical testing are showing decreasing trends.

 This graph compares wastewater results to new hospital admissions for people infected with COVID-19 as reported to Louisville Metro Department of Public Health and Wellness. This week Louisville in in the orange zone of high risk as assessed by the Centers for Disease Control (CDC) for new hospital admissions. Wastewater and new hospital admissions patterns have followed a roughly similar pattern, so there is reason to believe that hospital admissions will decrease in the next few weeks. See the chart below for more information about the CDC's risk thresholds. 

This chart shows a comparison between wastewater results and ICU Bed Occupancy as reported to Louisville Metro Department of Public Health and Wellness. This week Louisville in in the yellow zone of high risk as assessed by the Centers for Disease Control (CDC). Wastewater and ICU bed occupancy patterns have not followed the same pattern since May 2022, but there is reason to believe that with decreasing wastewater levels ICU bed occupancy will also decrease. See the chart below for more information about the CDC's risk thresholds. 


Variants of Concern

As of November 2022, we have ceased genomic tracking for SARS-CoV-2. We are working to develop methods to report on a several pathogens of interest (RSV, seasonal flu, etc.) to Louisville Metro's Department of Public Health and Wellness, JCPS, and other stakeholders.   


Louisville Sewersheds

We sample from 8 sites weekly, 5 water quality treatment plants (left panel) and 3 local sewersheds (right panel). The three graphs on this page that compare wastewater results to clinical cases, new hospitalizations for COVID-19, and ICU bed occupancy are based on all 8 sewersheds. The graphs on this page that show the variant proportions are bases on the 5 water quality treatment centers in the left panel. 

 

You can view additional wastewater data at the CDC's COVID Data Tracker.


Contact

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