Test results from MWRA’s pilot study to track wastewater at the Deer Island Treatment Plant for indicators of COVID-19 infection are posted on this site.
You may have seen the recent news stories describing how MA DPH is transitioning to an in house testing program to replace the Biobot testing program. Testing results from Biobot Analytics have been reduced to once a week, and will be discontinued at the end of July, 2026. Mass DPH plans to set up a dashboard that will include the historic Biobot data, and the ongoing results of their in house program. The MA DPH program will include twice weekly samples, and will cover additional pathogens in addition to COVID-19. We will share the link to that dashboard here once it is available.
Biobot Data - samples collected through 7/20/2026
The graphs include error bars which represent the range of result variability caused by laboratory processing.
The graph with the green dots and error bars represent the North System
The graph with the orange dots and error bars represent the South System
The data tables include some variant screening results as provided by Biobot Analytics. Additional information regarding the presence of SARS-CoV-2 genetic material in wastewater is available from EPA and CDC.
MWRA is now submitting samples for additional disease targets to the WastewaterSCAN program in addition to our regular testing with Biobot Analytics.