Have a look at recent news stories featuring N-WESP:
BBC: Coronavirus: Testing sewage an 'easy win'
The Independent: Coronavirus: Sewage-based test could register infection spikes up to 10 days earlier than medical-based tests
NBC News: In search for a coronavirus early warning system, scientists look to the sewers
UKCEH: Work begins on UK system for estimating COVID-19 cases from wastewater