MWRA online - home
Home
Water System
Sewer System
Harbor and Bay
School Program
About MWRA
Doing Business with MWRA
Contact MWRA
Wastewater COVID-19 Tracking
Massachusetts Water Resources Authority

Important Update: November 24, 2020

Biobot has updated its data processing protocol to improve the accuracy of the wastewater surveillance results. Over the last several months, Biobot has updated its data models and lab protocols based on an evolving understanding of the SARS-CoV-2 virus in wastewater. Some of the MWRA wastewater samples have been analyzed in the lab several times using multiple methods. Biobot has gone back and applied its most current data analysis methods to all the data generated for MWRA. The update included re-processing of all archived wastewater sample results for samples collected since the beginning of March 2020. Those archived results have been updated and are reflected below.

The graphs below reflect the updated data. 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.

Biobot Data - samples submitted through 11/23/2020

North and South
North
South
 

The graphs above reflect the updated data. 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.

Previous charts produced with the former data analysis methods are available here:
http://www.mwra.com/biobot/archive-biobotdata.htm.

The PDF linked below reflects the updated data.

Test results from MWRA’s pilot study to track wastewater at the Deer Island Treatment Plant for indicators of COVID-19 infection will be posted on this site.

Samples are currently taken daily and data are updated as received by our contract laboratory.


Samples are currently taken 3 times a week and data are updated as received by wastewater epidemiology company, Biobot Analytics.  Data are updated as received by Biobot following an internal review process.

To view the data behind the graph, click here (PDF).

The data are shared with staff from the Departments of Public Health and Environmental Protection, and the Executive Offices of Health and Human Services, and Energy and Environment.

It is important to note that this is a pilot of an evolving science. The results from this study will be used public health officials as additional tool for the Commonwealth to track how the pandemic is trending in Massachusetts, along with data from clinical tests, hospitalizations, etc. All the data, taken together, will be used by state officials to make decisions about how quickly respond. 

Please refer to the Mass DPH website for information regarding current cases of COVID-19 in your community.

 
 
Previous charts produced with the former data analysis methods are available have been archived.
  Go to mwra.com home

Updated November 25, 2020