Ghana’s last wild polio case was reported in 2008. For many, that might seem like the end of the story. But in public health, victory is never final. Polio can circulate silently, often without causing visible illness, and a single missed case could threaten thousands of children. Therefore, vigilance remains essential and that can be achieved through sustained quality surveillance. Environmental Surveillance (ES), one of the cornerstones in Ghana’s fight against poliovirus.