the.com/sewers
The underground confession booth where everything you flush admits what you actually ate.
means A network of pipes and tunnels carrying wastewater and runoff away from cities to treatment or disposal.
from From Old French essewier, to drain water off, rooted in Latin ex-aqua, literally to lead water out.
Rome's veteranCloaca Maxima still drains Rome after 2,600 years.
FatbergsGrease and wipes congeal into bus-sized blockages underground.
Disease fighterSewers cut cholera more than any drug did.