What are the limitations of wastewater disease surveillance?

Wastewater data is useful in deciding COVID-19 trends to help plan emergency responses, but there are some limitations:
 

• It is not possible to use wastewater data to confirm cases of COVID-19 in individual people

• Wastewater surveillance is new, and the tests used to get this data can be different between states and health departments

• This data can only be used to look at COVID-19 trends in the communities of the Jones Island and South Shore sewer sheds