 Environmental surveillance of rivers and wastewater for SAR-COV-2 detection has been explored as an innovative way to surveil the pandemic. A recent study estimated the economic costs of conducting wastewater-based environmental surveillance for SAR-COV-2 to inform decision-making if countries consider continuing these efforts. The study found that the cost of environmental surveillance ranges from 75 to 72 per month, Blantyre site, and 756 to slash bin slash SH05 per person per year, Kathmandu site. The cost per sample ranges from 2, Blantyre, and 0 to 5, Kathmandu. The study also found that there are economies of scale for human resources and equipment costs with increased sample processing and sharing of resources with other activities. This article was authored by Lucky G. Anguira, Bhavna Sharma, Kabita Bay Trusta, and others.